| { | |
| "paper_id": "O09-1012", | |
| "header": { | |
| "generated_with": "S2ORC 1.0.0", | |
| "date_generated": "2023-01-19T08:11:14.646776Z" | |
| }, | |
| "title": "", | |
| "authors": [], | |
| "year": "", | |
| "venue": null, | |
| "identifiers": {}, | |
| "abstract": "", | |
| "pdf_parse": { | |
| "paper_id": "O09-1012", | |
| "_pdf_hash": "", | |
| "abstract": [], | |
| "body_text": [ | |
| { | |
| "text": "Cepstrum \u5e73\uf904\u904e\u7684\u983b\u8b5c LPC \u983b\u8b5c Hz dB \u8aa4\u5dee \u5716 1 /i/\u97f3\u97f3\u6846\u4e4b LPC \u983b\u8b5c\u5305\u7d61 \u548c \u5012\u983b\u8b5c\u5e73\uf904\u5f8c\u4e4b\u983b\u8b5c \u672c\uf941\u6587\u4ee5\uf9ea\u6563\u5012\u983b\u8b5c\u4e4b\u4f30\u8a08\u6cd5\u70ba\u57fa\u790e\uff0c\u7814\u7a76\u3001\u63d0\u51fa\u4e00\u500b\u983b\u8b5c\u5305\u7d61\u4f30\u8a08\u7684\u67b6\u69cb (scheme)\uff0c\u67b6\u69cb\u5982\u5716 2 \u6240\u793a\u4e4b\u8655\uf9e4\uf9ca\u7a0b\uff0c\u4e00\u500b\u8f38\u5165\u7684 20ms \u4e4b\u8a9e\u97f3\u97f3\u6846\uff0c\u9996\u5148\u9032\ufa08\u57fa\u983b \u5716 2 \u983b\u8b5c\u5305\u7d61\u4f30\u8a08\u4e4b\u67b6\u69cb \u7684\u5075\u6e2c\uff0c\u4ee5\u6c42\u51fa\u8a72\u97f3\u6846\u7684\u57fa\u983b\u503c\u53ca\u5224\u65b7\u662f\u5426\u70ba\u6709\u8072(voiced)\uff0c\u6c42\u51fa\u7684\u57fa\u983b\u503c\u5c07\u6703\u5728\"\u983b\u8b5c \u5cf0\u503c\u6311\u9078\"\u4e4b\u65b9\u584a\u5167\u4f7f\u7528\uff0c\u5728\u6b64\u6211\u5011\u4f7f\u7528\uf9ba\u4e00\u7a2e\u81ea\u76f8\u95dc(autocorrelation)\u51fd\uf969\u642d\u914d AMDF (absolute magnitude difference function)\u7684\u57fa\u983b\u5075\u6e2c\u65b9\u6cd5 [1, 7, 8] \u3002\u63a5\u8457\uff0c\u5c07\u8a72\u97f3\u6846\u4fe1\u865f\u4e58 \u4e0a\u6f22\uf95f(Hanning)\u7a97 [1] \uff0c\u4e26\u65bc\u4fe1\u865f\u5e8f\uf99c\u5f8c\u9762\u88dc\u4e0a\uf9b2\uff0c\u4f7f\u5e8f\uf99c\u9577\ufa01\u6210\u70ba 1024 \u9ede\uff0c\u7136\u5f8c\u5c0d\u8a72 \u5e8f\uf99c\u4f5c FFT (fast Fourier transform)\u8a08\u7b97\u800c\u5f97\u5230\u983b\u57df\u4e0a\u7684\u983b\u8b5c\u632f\u5e45\u3002\u4e4b\u5f8c\uff0c\u5c0d\u983b\u8b5c\u632f\u5e45\u66f2 \u7dda\u4f5c\u5cf0\u9ede(spectral peak)\u7684\u6311\u9078\uff0c\u4e26\u5c07\u9078\u4e2d\u7684\u632f\u5e45\u5cf0\u9ede\u7684\u983b\uf961\u503c\u4f5c\u983b\uf961\u5c3a\ufa01\u4e4b\u8f49\u63db\u3002\u4f7f\u7528 \u6311\u9078\u51fa\u7684\u632f\u5e45\u5cf0\u9ede\u4e4b\u632f\u5e45\u503c\u548c\u76f8\u5c0d\u61c9\u7684\u983b\uf961\u503c\uff0c \u5c31 \u53ef \u5e36 \u5165 \u983b \u8b5c \u5305 \u7d61 \u7684 \u903c \u8fd1 \u6e96 \u5247 (critera) [6] \uff0c\u53bb\u89e3\u51fa\uf9ea\u6563\u5012\u983b\u8b5c\u4fc2\uf969\u7684\uf969\u503c\uff0c\u800c\uf9ea\u6563\u5012\u983b\u8b5c\u4fc2\uf969\u5247\u53ef\u7528\u4ee5\u7b97\u51fa\u6240\u903c\u8fd1\u7684 \u983b\u8b5c\u5305\u7d61\u3002 \u5728\u5716 2 \u7684\uf9ca\u7a0b\uf9e8\uff0c\u6211\u5011\u4e3b\u8981\u4f5c\u63a2\u8a0e\u4e14\u63d0\u51fa\u65b0\u4f5c\u6cd5\u7684\u662f\uff0c\"\u983b\u8b5c\u5cf0\u9ede\u6311\u9078\"\u548c\"\u983b\uf961\u5c3a \ufa01\u8f49\u63db\"\uf978\u65b9\u584a\u3002\u96d6\u7136\uff0c\u6838\u5fc3\u7684\"\uf9ea\u6563\u5012\u983b\u8b5c\u8a08\u7b97\"\u65b9\u584a\uff0c\u6211\u5011\u53ea\u662f\u76f4\u63a5\uf96b\u7167\u524d\u4eba\u7684\u6210\u679c [6] \uff0c\u4f46\u662f\uff0c\u5982\u679c\u6c92\u6709\u6311\u9078\u5230\u6b63\u78ba\u7684\u983b\u8b5c\u5cf0\u9ede\uff0c\u6216\u8005\u6c92\u6709\u4f7f\u7528\u6b63\u78ba\u7684\u983b\uf961\u5c3a\ufa01\uff0c\u5247\"\uf9ea\u6563 \u5012\u983b\u8b5c\u8a08\u7b97\"\u6240\u903c\u8fd1\u51fa\u7684\u983b\u8b5c\u5305\u7d61\u66f2\u7dda\uff0c\u4ecd\u7136\u6703\u51fa\u73fe\uf967\u80fd\u5ffd\uf976\u7684\u8aa4\u5dee\uff0c\u800c\uf967\u80fd\u7b97\u662f\uf9e4\u60f3 \u7684\u983b\u8b5c\u5305\u7d61\u66f2\u7dda\u3002\u7531\u65bc\u904e\u53bb\u7684\u6587\u737b\uff0c\u4e26\u672a\u8a18\u8f09\"\u983b\u8b5c\u5cf0\u9ede\u6311\u9078\"\u548c\"\u983b\uf961\u5c3a\ufa01\u8f49\u63db\"\u7684\u78ba\u5be6 \u4f5c\u6cd5\uff0c\u56e0\u6b64\u6211\u5011\uf965\u8457\u624b\u7814\u7a76\u9019\uf978\u500b\u554f\u984c\uff0c\u8a73\u7d30\u60c5\u5f62\u5728\u7b2c\u4e09\u7bc0\u548c\u7b2c\u56db\u7bc0\u5206\u5225\uf96f\u660e\u3002\u6b64\u5916\uff0c \u6211\u5011\u4e5f\u628a\u5716 \u4ee5\u6c42\u53d6\u6642\u523b t \u6642\u5404\u8ae7\u6ce2\u7684\u983b\uf961\u8207\u632f\u5e45\uff0c\u5176\u4e2d N \u8868\u793a\u76f8\u9130\u97f3\u6846\u4e4b\u9593\u7684\u4f4d\u79fb\u6a23\u672c\uf969(frame ", | |
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| "text": "7,", | |
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| "text": "[6]", | |
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| "text": "[6]", | |
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| { | |
| "start": 824, | |
| "end": 829, | |
| "text": "\u6211\u5011\u4e5f\u628a\u5716", | |
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| "section": "\u65b9\u6cd5\uff0c\u4e26\u4e14\u8a2d\u6cd5\u89e3\u6c7a\u5be6\u969b\u4f7f\u7528\u6642\u6240\u9047\u5230\u7684\u554f\u984c\u3002", | |
| "sec_num": null | |
| }, | |
| { | |
| "text": "EQUATION", | |
| "cite_spans": [], | |
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| "eq_spans": [ | |
| { | |
| "start": 0, | |
| "end": 8, | |
| "text": "EQUATION", | |
| "ref_id": "EQREF", | |
| "raw_str": "(IDFT)\u800c\u5f97\u5230\uff0c\uf9a8\u6240\u5f97\u7684\u5012\u983b\u8b5c\u4fc2\uf969\u70ba c 0 , c 1 , \u2026, c N-1 \uff0c\u4e4b\u5f8c\uff0c\u518d\u5c07\u9019\u4e9b\u5012 \u983b\u8b5c\u4fc2\uf969\u4f5c DFT\uff0c\u5c31\u53ef\u9084\u539f\u6c42\u5f97\u5c0d\uf969\u632f\u5e45\u983b\u8b5c\uff0c\u5176\u516c\u5f0f[8]\u70ba 2 1 0 log ( ) , 0 1 N j kn N n n X k c e k N \u03c0 \u2212 \u2212 = = \u2264 \u2264 \u2212 \u2211 (1) \u7531\u65bc\u5c0d\uf969\u983b\u8b5c\u632f\u5e45 log|X(k)|\u662f\u5076\u5c0d\u7a31\u7684\uff0c\u5373 log|X(k)| = log|X(N-k)|\uff0c\u6240\u4ee5\u7531\u5c0d\uf969\u983b\u8b5c\u632f\u5e45 \u6c42\u51fa\u7684\u5012\u983b\u8b5c\u4fc2\uf969\u4e5f\u662f\u5076\u5c0d\u7a31\u7684\uff0c\u5373 c k = c N-k \uff0c\u4f9d\u64da\u9019\u500b\u5076\u5c0d\u7a31\u7684\u7279\u6027\uff0c\u516c\u5f0f(1)\u53ef\u88ab\u63a8 \u5c0e\u6210\u70ba 2 2 1 0 1 2 log ( ) 2 cos( ) cos( ), 0 1 N n n n X k c c kn c k k N N \u03c0 \u03c0 \u2212 = = + + \u2264 \u2264 \u2212 \u2211 (2) \u9019\u662f\u56e0\u70ba\u5728\u8f49\u63db\u6838\u5fc3\u7684\u865b\u90e8(imaginary part) \u5947\u51fd\uf969 sin(\u22c5)\u548c\u5076\u5c0d\u7a31\u7684\u5012\u983b\u8b5c\u4fc2\uf969\u5e8f\uf99c\u6703 \u52a0\u7e3d\u6210 0 \u503c\u3002 \uf974\u516c\u5f0f(2)\uf9e8\u53ea\u4fdd\uf9cd\u524d\u9762\u5c11\uf969\u5e7e\u500b(\uf9b5\u5982 p+1 \u500b)\u5012\u983b\u8b5c\u4fc2\uf969\uff0c\u5247\u5b83\u53ef\u7528\u4ee5\u8a08\u7b97\u51fa\u4e00\u500b \u5e73\uf904\u904e\u7684\u632f\u5e45\u983b\u8b5c\uff0c\u8a08\u7b97\u516c\u5f0f\u70ba 0 1 log ( ) 2 cos(2 ) p n n S f c c fn \u03c0 = = + \u2211 (3) \u4f46\u662f\uff0c\u5982\u679c\u60f3\u8981\u4ee5\u516c\u5f0f(3)\uf92d\u903c\u8fd1\u983b\u8b5c\u5305\u7d61\uff0c\u5247\u516c\u5f0f(3)\uf9e8\u7684\u5012\u983b\u8b5c\u4fc2\uf969 c k \uff0c\u5c31\uf967\u662f\u4f7f\u7528 IDFT \uf92d\u6c42\u53d6\uf9ba\uff0c\u800c\u662f\u8981\u5148\u5b9a\u7fa9\u4e00\u4e9b\u6b32\u88ab\u6eff\u8db3\u7684\u983b\u8b5c\u5305\u7d61\u9650\u5236\uff0c\u7136\u5f8c\u5728\u5118\uf97e\u6eff\u8db3\u9019\u4e9b\u983b \u8b5c\u5305\u7d61\u9650\u5236\u7684\u689d\u4ef6\u4e0b\uff0c\u53bb\u6c42\u89e3\u51fa\u6700\u4f73\u7684\u5012\u983b\u8b5c\u4fc2\uf969 c k \u7684\uf969\u503c\uff0c\u5982\u6b64\u6c42\u51fa\u7684\u5012\u983b\u8b5c\u4fc2\uf969 \u5c31\u7a31\u70ba\uf9ea\u6563\u5012\u983b\u8b5c\u4fc2\uf969\u3002\u524d\u8ff0\u6240\u8b02\u7684\u983b\u8b5c\u5305\u7d61\u9650\u5236\uff0c\u5176\u5be6\u662f\u5f9e\u539f\u59cb\u7684 DFT \u983b\u8b5c|X(k)|\u4e0a\uff0c \u627e\u51fa L \u7d44\u5177\u6709\u4ee3\u8868\u6027\u7684\u983b\u8b5c\u632f\u5e45\u5cf0\u503c\u53ca\u5176\u983b\uf961(a k , f k ), k=1, 2 \u2026, L\u3002\u7531\u65bc L \u901a\u5e38\u6bd4\u5012\u983b\u8b5c \u968e \uf969 p \u5927 \u8a31 \u591a \uff0c \u6240 \u4ee5 \u9700 \u8981 \u4f7f \u7528 \u4e00 \u500b \u52a0 \u6b0a \u5f0f \u6700 \u5c0f \u5e73 \u65b9 \u6e96 \u5247 (weigthed least-squares criterion)\uff0c\uf92d\u6700\u5c0f\u5316\u9019 L \u500b\u983b\uf961\u9ede\u4e0a( f k , k=1, 2 \u2026, L)\uff0cS(f k )\u548c a k \u4e4b\u9593\u7684\u8aa4\u5dee\uff0c\u4e5f\u5c31\u662f\u6700 \u5c0f\u5316 2 1 log log ( ) L k k k k w a S f \u03b5 = = \u22c5 \u2212 \u2211 (4) \u5176\u4e2d k w \u662f\u4e00\u500b\u6b0a\u91cd\u503c\u8207\u983b\uf961 k f \u6709\u95dc\uff0c\u5c0d\u65bc\uf967\u540c\u7684\u983b\uf961\u503c\u7d66\u4e88\uf967\u540c\u7684\u52a0\u6b0a\uff0c\u53ef\u85c9\u4ee5\u6c42\u5f97 \u8f03\u597d\u7684\u983b\u8b5c\u5305\u7d61\u3002\uf974\u628a\u516c\u5f0f(4)\u4ee5\u77e9\u9663\u5f62\u5f0f\uf92d\u8868\u793a\uff0c\u5247\u53ef\u6539\u5beb\u6210\u4e0b\u5f0f[6] 2 ( ) ( ) T a Mc W a Mc W a Mc \u03b5 = \u2212 \u22c5 = \u2212 \u2212 (5) \u5176\u4e2d [ ] 1 log( ), , log( ) T L a a a = \uff1b 0 [ , , ] T p c c c = \u662f\u4e00\u500b\u7dad\ufa01 p+1 \u7684\u5411\uf97e\uff0c\u4ee3\u8868\u672a\u77e5\u7684 \u5012\u983b\u8b5c\u4fc2\uf969\uff1b 1 0 0 L w W w \u23a1 \u23a4 \u23a2 \u23a5 = \u23a2 \u23a5 \u23a2 \u23a5 \u23a3 \u23a6 \u70ba\u5c0d\u89d2\u77e9\u9663\uff0c\u5c0d\u89d2\u539f\u7d20\u70ba\u52a0\u6b0a\u503c\uff1b 1 1 1 1 2cos(2 ) 2cos(2 2) 2cos(2 ) 1 2cos(2 ) 2cos(2 2) 2cos(2 ) L L L f f fp M f f fp \u03c0 \u03c0 \u03c0 \u03c0 \u03c0 \u03c0 \u23a1 \u23a4 \u23a2 \u23a5 = \u23a2 \u23a5 \u23a2 \u23a5 \u23a3 \u23a6 \uf974\u8981\u5f97\u5230\u4e00\u7d44\u6700\u4f73\u7684\u5012\u983b\u8b5c\u4fc2\uf969 c\uff0c\u4e5f\u5c31\u662f\u8981\u6700\u5c0f\u5316\u516c\u5f0f(4)\u7684\u8aa4\u5dee\uff0c\u9019\u53ef\u7531\u516c\u5f0f(5)\u63a8\u5c0e \u51fa\u5982\u4e0b\u4e4b\u7dda\u6027\u89e3 1 ( ) T T c M WM M Wa \u2212 = (6) \u5982\u6b64\uff0c\u900f\u904e\u77e9\u9663\u9006\u8f49\u63db\u8207\u77e9\u9663\u76f8\u4e58\uff0c\u5373\u53ef\u5f97\u5230\u4e00\u7d44\u6700\u4f73\u7684\uf9ea\u6563\u5012\u983b\u8b5c\u4fc2\uf969\u3002 2.2 \uf9ea\u6563\u5012\u983b\u8b5c\u4e4b\u7a69\u5b9a\u5316(regularization) \u7531\u524d\u4e00\u5c0f\u7bc0\u7684\uf96f\u660e\u53ef\u77e5\uff0c\uf9ea\u6563\u5012\u983b\u8b5c\u7684\u539f\uf9e4\u662f\uff0c\u5728\u983b\u57df\u4e0a\u4ee5\u6700\u5c0f\u5e73\u65b9\u6e96\u5247\u53bb\u6c42\u89e3\u5012 \u983b\u8b5c\u4fc2\uf969\uff0c\u9019\u6a23\u7684\u6c42\u89e3\u65b9\u6cd5\u5728\u5be6\u52d9\u4e0a\u6703\u906d\u9047\u5230\u4e00\u500b\u554f\u984c\uff0c\u800c\u4f7f\u5b83\u8b8a\u6210\uf967\u5be6\u7528\uff0c\u90a3\u5c31\u662f ill- conditioning \u554f\u984c\u3002\u7531\u65bc\u77e9\u9663 T M WM \u901a\u5e38\u662f\u689d\u4ef6\u5f88\u5dee\u7684\u77e9\u9663\uff0c\u9019\u5c07\u6703\u5c0e\u81f4\u5305\u7d61\u66f2\u7dda\u6709\u975e \u5e38\u5927\u7684\u8aa4\u5dee\uff0c\u9019\u610f\u5473\u8457\u53ea\u8981\uf969\u64da(a k , f k ) \u6709\u4e9b\u5fae\u7684\u6539\u8b8a(\uf9b5\u5982\u56db\u6368\u4e94\u5165)\uff0c\u5247\u8a08\u7b97\u51fa\u7684\u5012\u983b \u8b5c\u4fc2\uf969\u5c31\u6703\u6709\u5287\uf99f\u7684\u8b8a\u5316\uff0c\u800c\u5305\u7d61\u66f2\u7dda\u4e5f\u6703\u56e0\u70ba f k \u7684\u6539\u8b8a\u800c\u7522\u751f\u904e\u5927\u7684\u8d77\u4f0f\u3002 \u4ee5\u5716 3 \u70ba\uf9b5\uff0c\u865b\u7dda\u66f2\u7dda\u6240\u8868\u793a\u7684\u662f\uff0c\u4f7f\u7528 40 \u968e\uf9ea\u6563\u5012\u983b\u8b5c\u4fc2\uf969\u3001\u548c\u975e\u7dda\u6027\u983b\uf961\u5c3a \ufa01\u6240\u6c42\u5f97\u7684\u983b\u8b5c\u5305\u7d61\uff0c\u96d6\u7136\u5305\u7d61\u66f2\u7dda\u6709\u6b63\u78ba\u7684\u7d93\u904e\u524d 7 \u500b\u632f\u5e45\u5cf0\u9ede\uff0c\uf967\u904e\u5cf0\u9ede\u8207\u5cf0\u9ede\u4e4b \u9593\u7684\u66f2\u7dda\u8b8a\u5316\u5f97\u975e\u5e38\u5287\uf99f\u3002\u5728\u8a31\u591a\u983b\u8b5c\u5305\u7d61\u7684\u61c9\u7528\uf9e8\uff0c\u76f8\u9130\u5cf0\u9ede\u4e4b\u9593\u7684\u632f\u5e45\u503c\u5fc5\u9808\u662f\u53ef \u4ee5\u8a08\u7b97\u7684\uff0c\u5982\u679c\u6709\u53ef\u80fd\u51fa\u73fe\u5982\u5716 3 \u6240\u793a\u7684\u60c5\u6cc1\uff0c\u90a3\u9ebc\u6b64\u66f2\u7dda\u5728\u5be6\u52d9\u4e0a\u5c07\u7121\u6cd5\u4f5c\u70ba\u983b\u8b5c\u5305 \u7d61\u66f2\u7dda\u3002 \u5148\u524d\u7814\u7a76\u8005\u4e5f\u767c\u73fe\uff0c\u5728\u4ee5\u4e0b\u4e09\u7a2e\u60c5\u6cc1\u4e0b\uff0c\u4e0a\u8ff0\u554f\u984c\u767c\u751f\u7684\u6a5f\u6703\u5c07\u6703\u63d0\u9ad8\uff0c\u5206\u5225\u662f\uff1a(a) \u7576\u6709\u5f88\u5bec\u7684\u983b\uf961\u8ef8\u5340\u9593\u6c92\u6709\u53ef\u903c\u8fd1\u7684\u632f\u5e45\u9ede\u6642\uff1b(b)\u7576\uf978\u500b\u76f8\u9130\u7684\u983b\uf961\u9ede f k , f k+1 \u5f88\u9760\u8fd1\uff0c \u4e26\u4e14\u6b64\uf978\u9ede\u7684\u632f\u5e45\u5dee\uf962\u5f88\u5927\uff1b(c)\u7576\uf9ea\u6563\u5012\u983b\u8b5c\u4fc2\uf969\u7684\u500b\uf969 p \u5f88\u63a5\u8fd1\u6b32\u903c\u8fd1\u7684\u983b\uf961\u9ede\uf969 L \u6642\uff0c\u901a\u5e38\u5728\u57fa\u983b\u8f03\u5927\u6642\u767c\u751f\u3002\u56e0\u6b64\uff0cCapp\u00e9 \u548c Moulines \u63d0\u51fa\u4e00\u500b\u7a69\u5b9a\u5316\u6280\u8853[6]\uff0c\u7528\u4ee5 \u6392\u9664\u5305\u7d61\u66f2\u7dda\u7684\uf967\u5408\uf9e4\u8d77\u4f0f\uff0c\u4ed6\u5011\u5728\u6c42\u89e3\u4e00\u7d44\uf9ea\u6563\u5012\u983b\u8b5c\u4fc2\uf969\u6642\uff0c\u9664\uf9ba\u4f9d\u64da\u6700\u5c0f\u5316\u5e73\u65b9 \u8aa4\u5dee\u6e96\u5247\uff0c\u9084\u5c07\u5305\u7d61\u66f2\u7dda\u7684\u5e73\uf904\u7a0b\ufa01\u7d0d\u5165\u8003\u616e\uff0c\u5982\u6b64\u4fee\u6539\u904e\u7684\u6e96\u5247\u5c31\u8b8a\u6210\u5982\u4e0b\u516c\u5f0f\uff1a ( ) 2 1 log log ( ) ( ) L k k k k w a S f R S f \u03b5 \u03bb = = \u22c5 \u2212 + \u22c5 \u2211 (7) \u5716 3 \u4f7f\u7528 40 \u968e\uf9ea\u6563\u5012\u983b\u8b5c\u4fc2\uf969\u3001\u975e\u7dda\u6027\u983b\uf961\u5c3a\ufa01\u6c42\u5f97\u4e4b\u57fa\u672c\u983b\u8b5c\u5305\u7d61 \u5176\u4e2d R( S(f) )\u662f\u4e00\u500b\u88dc\u511f\u51fd\uf969\uff0c\u7528\u4ee5\uf97e\u6e2c\u5305\u7d61\u66f2\u7dda\u7684\u5e73\uf904\u7a0b\ufa01\uff0c\uf974\u5305\u7d61\u66f2\u7dda\u8d8a\u5e73\uf904\u5247\u5176 \u503c\u8d8a\u5c0f\uff0c\u53cd\u4e4b\u8d8a\u5927\uff1b\u03bb \u662f\u6b63\u898f\u5316\uf96b\uf969\uff0c\u7528\u4ee5\u63a7\u5236\u5e73\uf904\u7a0b\ufa01\u548c\u6700\u5c0f\u5e73\u65b9\u8aa4\u5dee\u6e96\u5247\u4e4b\u9593\u7684\u76f8 \u5c0d\u6b0a\u91cd\uff0c\u03bb \u503c\u8d8a\u5927\u5247\u903c\u8fd1\u51fa\u7684\u983b\u8b5c\u5305\u7d61\u8d8a\u5e73\uf904\u3002\u4e00\u500b\u5178\u578b\u7684\u88dc\u511f\u51fd\uf969\u5982\u4e0b\u5f0f[6]\uff1a ( ) 2 0 ( ) ( ) d R S f S f df df \u03c0 \u23a1 \u23a4 = \u23a2 \u23a5 \u23a3 \u23a6 \u222b (8) \u7576\u628a\u516c\u5f0f(3)\u5f0f\u4ee3\u5165\u516c\u5f0f(8)\u4e2d\uff0c\u53ef\u63a8\u5c0e\u5f97 ( ) ( ) T R S f c Uc = , 2 2 2 0 0 1 8 0 U p \u03c0 \u23a1 \u23a4 \u23a2 \u23a5 \u23a2 \u23a5 = \u23a2 \u23a5 \u23a2 \u23a5 \u23a3 \u23a6 (9) \u5982\u6b64\u5f9e\u516c\u5f0f(7)\u63a8\u5c0e\u51fa\u7684\u6700\u4f73\u89e3\u5982\u4e0b\u5f0f[6] 1 ( ) T T c M WM U M Wa \u03bb \u2212 = +", | |
| "eq_num": "(10" | |
| } | |
| ], | |
| "section": "\u65b9\u6cd5\uff0c\u4e26\u4e14\u8a2d\u6cd5\u89e3\u6c7a\u5be6\u969b\u4f7f\u7528\u6642\u6240\u9047\u5230\u7684\u554f\u984c\u3002", | |
| "sec_num": null | |
| }, | |
| { | |
| "text": ")\u90e8\u5206\u3002\u7136\u5f8c\uff0c\u5c0d\u65bc\u8ae7\u6ce2\u90e8\u5206\uff0c\u4f9d\u64da\u5075\u6e2c\u51fa\u7684\u57fa\u983b\u503c F 0 \uff0c\u5728\u983b\uf961\u7bc4\u570d [0 .5\u00d7F 0 , 1.5\u00d7F 0 ] \u5167\u5c0b\u627e\u51fa\u5cf0\u9ede\u7684\u632f\u5e45\u503c a 1 \u3001\u53ca\u5176\u5c0d\u61c9\u7684\u983b\uf961\u503c f 1 \uff1b\u63a5\u8457\u5728\u983b\uf961\u7bc4\u570d [f 1 +0.5\u00d7F 0 , f 1 +1.5\u00d7F 0 ] \u5c0b\u627e\u51fa\u53e6\u4e00\u5cf0\u9ede\u7684\u632f\u5e45\u503c a 2 \u3001\u53ca\u5176\u5c0d\u61c9\u7684\u983b\uf961\u503c f 2 \uff1b\u5982\u6b64\u7e7c\u7e8c\u627e\u51fa\u5176\u5b83\u5cf0 \u9ede\u3002\u5982\u679c\u5728\u5c0b\u627e\u7684\u983b\uf961\u7bc4\u570d\u5167\u6c92\u6709\u5cf0\u9ede\uff0c\u5247\u6703\u628a\u5c0b\u627e\u7684\u7bc4\u570d\u5f80\u5f8c\u79fb\u52d5 0.5\u00d7F 0 \uff0c\u518d\u5617\u8a66\u5c0b \u627e\u5cf0\u9ede\u3002\u6b64\u5916\uff0c\u6211\u5011\u4e5f\u8a2d\u5b9a\uf9ba\u5cf0\u9ede\u632f\u5e45\u7684\u9580\u6abb\uff0c\u4ee5\u6392\u9664\u632f\u798f\u8f03\u5c0f\u7684\u5cf0\u9ede\u3002 \u5c0d\u65bc\u6709\u8072\u97f3\u6846\u7684\u96dc\u97f3\u90e8\u5206\uff0c\u7531\u65bc\u983b\u8b5c\u5df2\u7121\u660e\u986f\u7684\u8ae7\u6ce2\u7d50\u69cb\uff0c\u5982\u5716 4 \uf9e8", | |
| "cite_spans": [], | |
| "ref_spans": [], | |
| "eq_spans": [], | |
| "section": "\u65b9\u6cd5\uff0c\u4e26\u4e14\u8a2d\u6cd5\u89e3\u6c7a\u5be6\u969b\u4f7f\u7528\u6642\u6240\u9047\u5230\u7684\u554f\u984c\u3002", | |
| "sec_num": null | |
| }, | |
| { | |
| "text": "-1 1 1 0 1 0 =0 1 1 20 log 20 log ( , ) Nr L t k k k t Es a S t f Nr L = \u23a1 \u23a4 = \u2211 \u2212 \u23a2 \u23a5 \u23a3 \u23a6 \u2211 (11) \u5176\u4e2d Nr \u8868\u793a\u8a9e\u97f3\u97f3\u6846\u7684\u7e3d\uf969\uff0c t k a \u8868\u793a\u7b2c t \u500b\u97f3\u6846\uf9e8\u7684\u7b2c k \u500b\u983b\u8b5c\u5cf0\u9ede\u7684\u632f\u5e45\uff0c ( , ) k S t f \u8868\u793a\u7b2c t \u500b\u97f3\u6846\u4ee5\uf9ea\u6563\u5012\u983b\u8b5c\u6240\u903c\u8fd1\u51fa\u7684\u983b\u8b5c\u5305\u7d61\u3002\u5be6\u9a57\u5f8c\u8a08\u7b97\u51fa\u7684\u7684\u903c\u8fd1\u8aa4\u5dee\u5982\u5716 6 \u6240\u793a\uff0c\u6a6b\u8ef8\u8868\u793a\uf9ea\u6563\u5012\u983b\u8b5c\u7684\u968e\uf969\uff0c\u7e31\u8ef8\u5247\u662f\uf97e\u5f97\u7684\u903c\u8fd1\u8aa4\u5dee", | |
| "cite_spans": [], | |
| "ref_spans": [], | |
| "eq_spans": [], | |
| "section": "\u65b9\u6cd5\uff0c\u4e26\u4e14\u8a2d\u6cd5\u89e3\u6c7a\u5be6\u969b\u4f7f\u7528\u6642\u6240\u9047\u5230\u7684\u554f\u984c\u3002", | |
| "sec_num": null | |
| }, | |
| { | |
| "text": "f , i k a , k=1, 2, \u2026, i L , i k f \u8207 i k a \u5206 \u5225\u8868\u793a\u7b2c k \u500b\u8ae7\u6ce2\u7684\u983b\uf961\u8207\u632f\u5e45\uff1b\u518d\uf9a8\u7b2c i+1 \u500b\u8a9e\u97f3\u97f3\u6846\u7531 5.3 \u5b50\u7bc0\u6240\u6c42\u51fa\u7684\u8ae7\u6ce2\uf96b\uf969 \u662f 1 i k f + , 1 i k a + , k=1, 2, \u2026, 1 i L + \u3002\u5982\u6b64\uff0c\u7576\u8981\u5408\u6210\u7b2c i \u548c\u7b2c i+1 \u97f3\u6846\u4e4b\u9593\u6642\u523b t \u7684\u8ae7\u548c(harmonic) \u4fe1\u865f\u4e4b\u6a23\u672c h(t)\u6642\uff0c\u6211\u5011\u5148\u4ee5\u5982\u4e0b\u516c\u5f0f\u4f5c\u7dda\u6027\u5167\u5dee\uff0c 1 1 ( ) , 1, 2,..., ( ) , 1, 2,..., i i i k k k k i i i k k k k f f f t f t k L N a a a", | |
| "cite_spans": [], | |
| "ref_spans": [], | |
| "eq_spans": [], | |
| "section": "\u65b9\u6cd5\uff0c\u4e26\u4e14\u8a2d\u6cd5\u89e3\u6c7a\u5be6\u969b\u4f7f\u7528\u6642\u6240\u9047\u5230\u7684\u554f\u984c\u3002", | |
| "sec_num": null | |
| }, | |
| { | |
| "text": "shift)\uff0cL \u662f i L \u548c 1 i L + \u7684\u8f03\u5927\u8005\uff0c\u56e0\u6b64\u7576 i L \u5c0f\u65bc 1 i L + \u6642\uff0c\u5c31\u8981\u628a i k a , k= i L +1,\u2026, +1 i L \u8a2d\u70ba\uf9b2\u503c\u3002 \u7136\u5f8c\uff0c\u4ee5\u5982\u4e0b\u516c\u5f0f\u8a08\u7b97 h(t)\uff0c", | |
| "cite_spans": [], | |
| "ref_spans": [], | |
| "eq_spans": [], | |
| "section": "\u65b9\u6cd5\uff0c\u4e26\u4e14\u8a2d\u6cd5\u89e3\u6c7a\u5be6\u969b\u4f7f\u7528\u6642\u6240\u9047\u5230\u7684\u554f\u984c\u3002", | |
| "sec_num": null | |
| }, | |
| { | |
| "text": "\u5176\u4e2d ( ) k t \u03c6 \u8868\u793a\u7b2c k \u500b\u8ae7\u6ce2\uf94f\u7a4d\u5230\u6642\u523b t \u6642\u7684\u76f8\u4f4d\uf97e\uff0c\u95dc\u65bc\u521d\u59cb\u503c (-1) k \u03c6 \uff0c\u6211\u5011\uf9a8\u5176\u7b49\u65bc \u524d\u4e00\u97f3\u6846\uf9e8\u7684 ( -1) k N \u03c6 \u4ee5\uf965\u7dad\u6301\u76f8\u4f4d\u7684\uf99a\u7e8c\u6027\uff0c\u800c\u7576\u97f3\u6846\u7de8\u865f i \u70ba 0", | |
| "cite_spans": [], | |
| "ref_spans": [], | |
| "eq_spans": [], | |
| "section": "\u65b9\u6cd5\uff0c\u4e26\u4e14\u8a2d\u6cd5\u89e3\u6c7a\u5be6\u969b\u4f7f\u7528\u6642\u6240\u9047\u5230\u7684\u554f\u984c\u3002", | |
| "sec_num": null | |
| } | |
| ], | |
| "back_matter": [], | |
| "bib_entries": { | |
| "BIBREF0": { | |
| "ref_id": "b0", | |
| "title": "Speech Communications: Human and Machine", | |
| "authors": [ | |
| { | |
| "first": "D", | |
| "middle": [], | |
| "last": "O'shaughnessy", | |
| "suffix": "" | |
| } | |
| ], | |
| "year": 2000, | |
| "venue": "", | |
| "volume": "", | |
| "issue": "", | |
| "pages": "", | |
| "other_ids": {}, | |
| "num": null, | |
| "urls": [], | |
| "raw_text": "D. O'Shaughnessy, Speech Communications: Human and Machine, IEEE Press, Piscataway, NJ, 2000.", | |
| "links": null | |
| }, | |
| "BIBREF1": { | |
| "ref_id": "b1", | |
| "title": "Spectral e nvelope estim ation and representation for sound analysis-synthesis", | |
| "authors": [ | |
| { | |
| "first": "D", | |
| "middle": [], | |
| "last": "Schwarz", | |
| "suffix": "" | |
| }, | |
| { | |
| "first": "X", | |
| "middle": [], | |
| "last": "Rodet", | |
| "suffix": "" | |
| } | |
| ], | |
| "year": 1999, | |
| "venue": "Int. Computer Music Conference", | |
| "volume": "", | |
| "issue": "", | |
| "pages": "351--354", | |
| "other_ids": {}, | |
| "num": null, | |
| "urls": [], | |
| "raw_text": "D. Schwarz and X. Rodet, \"Spectral e nvelope estim ation and representation for sound analysis-synthesis\", Int. Computer Music Conference, Beijing, China, pp. 351-354, Oct. 1999.", | |
| "links": null | |
| }, | |
| "BIBREF2": { | |
| "ref_id": "b2", | |
| "title": "Spectral enve lope extraction by im proved cepstral m ethod", | |
| "authors": [ | |
| { | |
| "first": "S", | |
| "middle": [], | |
| "last": "", | |
| "suffix": "" | |
| }, | |
| { | |
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| "urls": [], | |
| "raw_text": "S. Im ai and Y . Abe, \"Spectral enve lope extraction by im proved cepstral m ethod\", Electron. and Commun. in Japan, Vol. 62-A, No. 4, pp. 10-17, 1979. (in Japanese)", | |
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| "ref_entries": { | |
| "TABREF0": { | |
| "text": "2 \u7684\u983b\u8b5c\u5305\u7d61\u4f30\u8a08\u67b6\u69cb\uff0c\u61c9\u7528\u65bc\u4f5c\u8a9e\u97f3\u8f49\u63db(voice transformation)\uff0c\uf9b5\u5982\u628a\u6210 \uf9ea\u6563\u5012\u983b\u8b5c \uf9ea\u6563\u5012\u983b\u8b5c\u4e4b\u89c0\uf9a3\u662f\u7531 Galas \u548c Rodet \u6240\u63d0\u51fa[5]\uff0c\u4ed6\u5011\u63a1\u53d6\u4ee5\u983b\u57df\u4e0a\u7684\u6700\u5c0f\u5e73\u65b9\u6e96 \u5247(least-squares criterion)\uf92d\u6c42\u53d6\u5012\u983b\u8b5c\u4fc2\uf969\uff0c\u9019\u548c\u539f\u672c\u7684\u5be6\uf969\u5012\u983b\u8b5c(real cepstrum)\u4fc2\uf969 \u7684\u6c42\u53d6\u65b9\u5f0f\uf967\u540c\u3002\u539f\u672c\u7684\u6c42\u53d6\u65b9\u5f0f\u662f\u628a\u5c0d\uf969\u983b\u8b5c\u632f\u5e45, log|X(k)|, k=0,1, \u2026, N-1, \u53bb\u4f5c\u53cd\uf9ea \u6563\u5085\uf9dd\uf96e\u8f49\u63db", | |
| "num": null, | |
| "type_str": "table", | |
| "html": null, | |
| "content": "<table><tr><td>\uf98e\uf981\u6027\u7684\u539f\u59cb\u767c\u97f3\uff0c\u7d93\u7531\u8f49\u63db\u8655\uf9e4\u800c\u5f97\u5230\uf981\u5c0f\u5b69\u7684\u8072\u97f3\u3001\u6216\u6210\uf98e\u7537\u751f\u7684\u8072\u97f3\uff0c\u8a73\u7d30\u60c5\u5f62</td></tr><tr><td>\u5728\u7b2c\u4e94\u7bc0\uf9e8\uf96f\u660e\u3002</td></tr><tr><td>\u4e8c\u3001 \u57fa\u65bc\uf9ea\u6563\u5012\u983b\u8b5c\u4e4b\u983b\u8b5c\u5305\u7d61\u4f30\u8a08</td></tr><tr><td>2.1</td></tr></table>" | |
| }, | |
| "TABREF3": { | |
| "text": "Es \u7684\uf969\u503c\uff0c\u89c0\u5bdf\u5716 6 \u53ef \u767c\u73fe\uff0c \u96a8\u8457\u968e\uf969\u7684\u589e\u52a0 Es \u503c\u6703\u660e\u986f\u5730\u4e0b\ufa09\uff0c\u76f4\u5230\u968e\uf969\u9ad8\u65bc 30 \u6642\uff0cEs \u503c\u4e0b\ufa09\u7684\u5e45\ufa01\u624d \u8da8\u65bc\u7de9\u548c\uff0c\u56e0\u6b64\u6211\u5011\u6c7a\u5b9a\u628a p \u503c\u8a2d\u5b9a\u70ba 40\uff0c\u4ee5\u78ba\u4fdd\u903c\u8fd1\u51fa\u7684\u983b\u8b5c\u5305\u7d61\u7684\u6e96\u78ba\u6027\u3002", | |
| "num": null, | |
| "type_str": "table", | |
| "html": null, | |
| "content": "<table><tr><td>\u8a9e\u97f3\u4fe1\u865f \u8f38\u5165</td><td>\u97f3\u6846\ufa00\u5272</td><td>\u983b\u8b5c\u5305\u7d61 \u4f30\u8a08</td><td/></tr><tr><td>\u8a9e\u97f3\u4fe1\u865f \u8f38\u51fa</td><td>\u4fe1\u865f \u91cd\u65b0\u5408\u6210</td><td>\u57fa\u983b\u79fb\u52d5</td><td>\u983b\u8b5c\u5305\u7d61 \u4f38\u7e2e</td></tr><tr><td/><td colspan=\"2\">\u5716 12 \u8a9e\u97f3\u8f49\u63db\u8655\uf9e4\u4e4b\u4e3b\uf9ca\u7a0b</td><td/></tr><tr><td colspan=\"4\">(a)\u4f7f\u7528 30 \u968e\u4e4b\uf9ea\u6563\u5012\u983b\u8b5c \u5716 7 \u4ee5\u7dda\u6027\u983b\uf961\u5c3a\ufa01\u4e4b\uf9ea\u6563\u5012\u983b\u8b5c\u6240\u903c\u9032\u4e4b\u983b\u8b5c\u5305\u7d61 (b)\u4f7f\u7528 40 \u968e\u4e4b\uf9ea\u6563\u5012\u983b\u8b5c (a) \u03bb = 0.001 (b) \u03bb = 0.01\u3002 \u5716 9 \u5728\u6885\u723e\u983b\uf961\u5c3a\ufa01\u548c 40 \u968e\u5012\u983b\u8b5c\u4e4b\u689d\u4ef6\u4e0b\u52a0\u5927\u7a69\u5b9a\u5316\uf96b\uf969 \u03bb</td></tr><tr><td colspan=\"4\">\u56e0\u6b64\uff0c\u6211\u5011\u5617\u8a66\u8abf\u6574\u983b\uf961\u8ef8\u5c3a\ufa01\uff0c\u4e5f\u5c31\u662f\u8abf\u6574\u4f4e\u983b\u90e8\u5206\u5728\u6574\u500b\u983b\uf961\u8ef8\u6240\u4f54\u7684\u6bd4\uf961\uff0c (a)\u539f\u59cb\u4e4b\u983b\u8b5c\u5305\u7d61 (b)\u6536\u7e2e\u4e4b\u983b\u8b5c\u5305\u7d61 (c)\u4f38\u5c55\u4e4b\u983b\u8b5c\u5305\u7d61 \u5716 10 \u5728\u56db\u7a2e\u983b\uf961\u7bc4\u570d\u6bd4\u8f03\u672c\uf941\u6587\u5c3a\ufa01\u3001\u6885\u723e\u5c3a\ufa01\u7684\u983b\u8b5c\u5305\u7d61\u903c\u8fd1\u4e4b\u8aa4\u5dee: \u5716 13 \u983b\u8b5c\u5305\u7d61\u4e4b\u6536\u7e2e\u8207\u4f38\u5c55 \u5716 7 \uf9e8\u7684\u60c5\u6cc1\u901a\u5e38\u662f\u767c\u751f\u5728\u57fa\u983b\u8f03\u4f4e\u7684\u8a9e\u97f3\u97f3\u6846\uf9e8\uff0c\u7531\u65bc\u76f8\u9130\u5cf0\u9ede\u7684\u983b\uf961\u503c\u975e\u5e38\u63a5 \u76ee\u7684\u662f\u8b93\uf9ea\u6563\u5012\u983b\u8b5c\u968e\uf969\u5927\u65bc 30 \u6642\uff0c\u983b\u8b5c\u5305\u7d61\u66f2\u7dda\uf967\u6703\u5728\u4f4e\u983b\u90e8\u5206\u51fa\u73fe\u904e\ufa01\u8d77\u4f0f\u7684\u60c5 (\u5de6\u4e0a) 0~2,000Hz\uff0c(\u53f3\u4e0a) 0~4,000Hz\uff0c(\u5de6\u4e0b) 0~6,000Hz\uff0c(\u53f3\u4e0b) 0~11,025Hz 5.3 \u57fa\u983b\u79fb\u52d5 \u8fd1\uff0c\u800c\u767c\u751f\u983b\u8b5c\u5305\u7d61\u5feb\u901f\u8b8a\u5316\u7684\u60c5\u6cc1\uff0c\u9019\u7a2e\u5feb\u901f\u8b8a\u5316\u7684\u983b\u8b5c\u5305\u7d61\u7121\u6cd5\u7531\u4f4e\u968e\uf969\u7684\uf9ea\u6563\u5012 \u983b\u8b5c\u53bb\u4f5c\u6e96\u78ba\u7684\u903c\u8fd1\uff0c\u5c24\u5176\u662f\u5728\u4f4e\u983b\u7684\u5340\u6bb5\u3002\u8981\u89e3\u6c7a\u9019\u7a2e\u554f\u984c\uff0c\u4e00\u500b\u666e\u904d\u88ab\u63a1\u53d6\u7684\u89c0\uf9a3 \u662f\uff0c\u4f7f\u7528\u975e\u7dda\u6027\u7684\u983b\uf961\u8ef8\uf92d\u64f4\u5927\u4f4e\u983b\u5340\u6bb5\u5728\u6574\u500b\u983b\uf961\u8ef8\u6240\u4f54\u7684\u6bd4\uf961\uff0c\u800c\u5e38\ufa0a\u7684\u975e\u7dda\u6027\u983b \uf961\u5c3a\ufa01\u5982\u6885\u723e\u5c3a\ufa01(Mel Scale)\u6216\u5df4\u514b\u5c3a\ufa01(Back Scale)\u3002\u5be6\u969b\u4e0a\u7684\u4f5c\u6cd5\u662f\uff0c\u5728\u6311\u9078\u51fa\u983b\u8b5c \u5cf0\u9ede\u4e4b\u5f8c\uff0c\u5148\u5c07\u5404\u5cf0\u9ede\u5c0d\u61c9\u7684\u983b\uf961 f k \u4f5c\u983b\uf961\u5c3a\ufa01\u7684\u8f49\u63db\u02c6( ) k f warp f = \uff0c\u624d\u53bb\u6c42\u89e3\uf9ea\u6563\u5012 \u6cc1\uff0c\u4e26\u4e14\u5728 2,000Hz ~ 6,000Hz \u7684\u983b\uf961\u8ef8\u5340\u6bb5\u53ef\u4ee5\u6e1b\u5c0f\u5cf0\u9ede\u632f\u5e45\u7684\u903c\u8fd1\u8aa4\u5dee\u3002\u7d93\u904e\u591a\u6b21 \u81f3\u65bc\u6b64\u7cfb\u7d71\u7684\u8655\uf9e4\uf9ca\u7a0b\u5247\u5982\u5716 12 \u6240\u793a\uff0c\u8f38\u5165\u7684\u8a9e\u97f3\u4fe1\u865f\uff0c\u5148\ufa00\u5272\u6210\u9577 20ms \u91cd\u758a 10ms \u8abf\u6574\u97f3\u9ad8(pitch)\u7684\u9ad8\u4f4e\u53ef\u8b93\u8072\u97f3\u8f49\u70ba\u5c16\u92b3\u6216\u4f4e\u6c89\uff0c\u4f46\u53ea\u8abf\u6574\u7537\u6027\u8a9e\u97f3\u7684\u97f3\u9ad8\uff0c\u4e26\uf967 \u7684\u5be6\u9a57\u89c0\u5bdf\uff0c\u6211\u5011\u6b78\u7d0d\u51fa\u4e00\u7a2e\u5982\u4e0b\uf99c\u516c\u5f0f\u6240\u793a\u4e4b\u983b\uf961\u5c3a\ufa01\uff0c ( ) log(1 ) 1,750 \u7684\u97f3\u6846\u5e8f\uf99c\uff0c\u7136\u5f8c\u5c0d\u5404\u500b\u97f3\u6846\u4f5c\u5982\u5716 2 \u6240\u793a\u7684\u8655\uf9e4\u6b65\u9a5f\uff0c\u63a5\u8457\u4f9d\u64da\u516c\u5f0f(10)\u53bb\u6c42\u53d6 40 \u80fd\u8f49\u63db\u51fa\u5177\u6709\uf981\u6027\u6216\u5b69\u7ae5\u97f3\u8272\u7684\u8a9e\u97f3\uff0c\u56e0\u6b64\uff0c\uf974\u8981\u628a\u8a9e\u97f3\u8f49\u63db\u6210\uf967\u540c\u6027\u5225\u8207\uf98e\u9f61\u7684\u8a9e f warp f = + \u500b\uf9ea\u6563\u5012\u983b\u8b5c\u4fc2\uf969\uff0c\u518d\u4f9d\u64da\u516c\u5f0f(3)\u5c31\u53ef\u8a08\u7b97\u51fa\u983b\u8b5c\u5305\u7d61\u66f2\u7dda\uff1b\u81f3\u65bc\"\u983b\u8b5c\u5305\u7d61\u4f38\u7e2e\"\u3001\" \u97f3\uff0c\u5247\u5171\u632f\u5cf0\u983b\uf961\u7684\u8abf\u6574(\u4e5f\u5c31\u662f\u983b\u8b5c\u5305\u7d61\u4f38\u7e2e\u7684\u8abf\u6574)\u662f\u5fc5\u9700\u5148\u4f5c\u7684\uff0c\u7136\u5f8c\u624d\uf92d\u4f5c\u97f3\u9ad8 (12) \u57fa\u983b\u79fb\u52d5\"\u3001\"\u4fe1\u865f\u91cd\u65b0\u5408\u6210\"\u7b49\u4e09\u500b\u65b9\u584a\u7684\u7d30\u7bc0\uff0c\u5c07\u65bc\u4e0b\u9762\u5404\u5b50\u7bc0\u5206\u5225\u4f5c\uf96f\u660e\u3002\u95dc\u65bc\u6b64 \u7684\u8abf\u6574\u3002 k \u983b\u8b5c\u4fc2\uf969\uff0c\u4e4b\u5f8c\u7576\u8981\u8a08\u7b97\u6240\u903c\u8fd1\u7684\u983b\u8b5c\u5305\u7d61\u6642\uff0c\u4e5f\u9700\u4f5c\u983b\uf961\u8ef8\u5c3a\ufa01\u7684\u8f49\u63db\u3002\u5716 8(a)\uf9e8\u7684 \u983b\u8b5c\u5305\u7d61\u66f2\u7dda\u5c31\u662f\u4f7f\u7528\u6885\u723e\u5c3a\ufa01\u6240\u903c\u8fd1\u51fa\u7684\uff0c\u76f8\u8f03\u65bc\u5716 7(b)\u7684\u7dda\u6027\u5c3a\ufa01\uff0c\u4f4e\u983b\u7684\u5cf0\u9ede\u90fd \u6709\u78ba\u5be6\u5730\u88ab\u5305\u7d61\u66f2\u7dda\u901a\u904e\uff0c\u4f46\u662f 3,000Hz \u9644\u8fd1\u7684\u5cf0\u9ede\u4ecd\u7136\u5b58\u5728\u8aa4\u5dee\u3002 \u5716 4 \uf9e8\u7684\u983b\u8b5c\u5305\u7d61\u66f2\u7dda\u5c31\u662f\u4f7f\u7528\u6b64\u7a2e\u983b\uf961\u5c3a\ufa01\uf92d\u6c42\u89e3\uf9ea\u6563\u5012\u983b\u8b5c\u800c\u903c\u8fd1\u51fa\u7684\uff0c\u53ef\u4ee5\u767c\u73fe \u5c0f\u65bc 1,000Hz \u4e4b\u983b\uf961\u90e8\u5206\uff0c\u983b\u8b5c\u5305\u7d61\u66f2\u7dda\u6c92\u6709\u904e\ufa01\u8d77\u4f0f\u4e4b\u60c5\u5f62\uff0c\u4e26\u4e14\u53ef\u6e96\u78ba\u5730\u901a\u904e\u5404\u500b \u5cf0\u9ede\uff0c\u6b64\u5916\u5728 2,000Hz ~ 6,000Hz \u7684\u983b\uf961\u90e8\u5206\uff0c\u983b\u8b5c\u5305\u7d61\u66f2\u7dda\u6bd4\u8d77\u6885\u723e\u5c3a\ufa01\u6240\u6c42\u51fa\u8005\uff0c \u7cfb\u7d71\u7684\u8655\uf9e4\u901f\ufa01\u662f\uff0c\u5728 Intel T5600 1.83GHz CPU \u7684\u7b46\u8a18\u672c\u96fb\u8166\u4e0a\uff0c\u8655\uf9e4 1 \u79d2\u9418\u7684\u8a9e\u97f3\uff0c \u7576\u4f5c\u5b8c 5.2 \u5c0f\u7bc0\u7684\u983b\u8b5c\u5305\u7d61\u4f38\u7e2e\u4e4b\u5f8c\uff0c\u5c31\u53ef\u4f7f\u7528\u8a72\u983b\u8b5c\u5305\u7d61 vc(f) (\u6216\u8005 ve(f))\uf92d\u8a2d\u5b9a \u5e73\u5747\u9700\u82b1 0.75 \u79d2\u7684\u6642\u9593\u3002 \u65b0\u7684\u8ae7\u6ce2\uf96b\uf969\uff0c\u5047\u8a2d\u76ee\u524d\u97f3\u6846\u7684\u539f\u59cb\u57fa\u983b\u662f 180Hz\uff0c\u800c\u73fe\u5728\u8981\u628a\u57fa\u983b\u8abf\u9ad8\u5230 250Hz, \u5247 5.2 \u983b\u8b5c\u5305\u7d61\u4f38\u7e2e \u5728\u6b64\u57fa\u983b\u7684\u5404\u500b\u500d\u983b\u4e0a\u7684\u8ae7\u6ce2\uff0c\u5b83\u5011\u7684\u632f\u5e45\u9ad8\ufa01\u53ef\u6839\u64da vc(f)\uf92d\u6c42\u5f97\uff0c\u4e5f\u5c31\u662f vc(250), \u6709\u8457\uf901\u4f73\u7684\u8d77\u4f0f\u80fd\uf98a\u3002 \u70ba\uf9ba\u6bd4\u8f03\uf978\u7a2e\u983b\uf961\u5c3a\ufa01\uff0c\u5373\u6211\u5011\u63d0\u51fa\u7684\u516c\u5f0f(12)\u4e4b\u983b\uf961\u5c3a\ufa01\u548c\u6885\u723e\u983b\uf961\u5c3a\ufa01\uff0c\u5c0d\u65bc \u4ee5\uf9ea\u6563\u5012\u983b\u8b5c\u903c\u8fd1\u983b\u8b5c\u5305\u7d61\u6240\u7522\u751f\u7684\u8aa4\u5dee\uff0c\u5728\u6b64\u6211\u5011\u5c31\u5206\u5225\u5728\uf967\u540c\u7684\u983b\uf961\u7bc4\u570d\u505a\u903c\u8fd1\u8aa4 \u5dee\u7684\uf97e\u6e2c\u5be6\u9a57\uff0c\u56db\u7a2e\u983b\uf961\u7bc4\u570d\u5206\u5225\u662f (a) 0 ~ 2,000Hz\uff0c(b) 0 ~ 4,000Hz\uff0c(c) 0 ~ 6,000Hz\uff0c vc(500), vc(750), \u2026, \u9019\u76f8\u7576\u65bc\u5728\u65b0\u7684\u57fa\u983b\u53ca\u5176\u500d\u983b\u4e0a\u5c0d\u983b\u8b5c\u5305\u7d61\u53d6\u6a23\uff0c\u7528\u4ee5\u53d6\u4ee3\u539f\u5148\u7684 \uf967\u540c\uf98e\u9f61\u8207\u6027\u5225\u7684\u8a9e\u8005\u6240\u767c\u51fa\u7684\u8a9e\u97f3\u4fe1\u865f\uff0c\u5728\u8072\u5b78\u4e0a\u7684\u4e3b\u8981\u5dee\uf962\u662f\uff0c\u8a9e\u97f3\u983b\u8b5c\u4e0a\u4e4b \u8ae7\u6ce2\u983b\uf961\u548c\u632f\u5e45\uff0c\u7d50\u679c\u6703\u5f97\u5230\u5982\u5716 14 \u6240\u793a\u7684\u65b0\u8ae7\u6ce2\u7d50\u69cb\u3002\u5728\u6b64\u4e00\u500b\u8ae7\u6ce2\u7684\uf96b\uf969\u53ea\u6709\u983b \u5171\u632f\u5cf0\u983b\uf961(formant frequency)\u503c\u7684\u9ad8\u4f4e\u6703\u6709\u660e\u986f\u7684\u5dee\u5225\u3002\u4e00\u822c\uf92d\uf96f\u7537\u751f\u7531\u65bc\u8072\u9053(vocal track)\u8f03\uf981\u751f\u7684\u9577\uff0c\u6240\u4ee5\u7537\u751f\u8a9e\u97f3\u7684\u5171\u632f\u5cf0\u983b\uf961\u503c\u6703\u6bd4\uf981\u751f\u7684\u4f4e\u3002\u56e0\u6b64\uff0c\uf974\u8981\u628a\u8f38\u5165\u7684 \uf961\u548c\u632f\u5e45\uff0c\u6211\u5011\u66ab\u6642\uf967\u4f7f\u7528\u76f8\u4f4d\u4e4b\u8cc7\u8a0a\u3002</td></tr><tr><td colspan=\"4\">(d) 0 ~ 11,025Hz\uff0c\u800c\u8aa4\u5dee\uf97e\u6e2c\u7684\u65b9\u5f0f\u4ecd\u7136\u5982\u516c\u5f0f(11)\u3002\u5be6\u9a57\u5f8c\u6211\u5011\u5f97\u5230\u5982\u5716 10 \u6240\u986f\u793a\u7684 \u8a9e\u97f3\u4fe1\u865f\u8f49\u63db\u6210\uf967\u540c\u6027\u5225\u8207\uf98e\u9f61\u7684\u8a9e\u97f3\u4fe1\u865f\uff0c\u5247\u5171\u632f\u5cf0\u5cf0\u983b\uf961\u7684\u8abf\u6574\u662f\u5fc5\u9700\u7684\uff0c\uf967\u904e\uff0c</td></tr><tr><td colspan=\"4\">\u7d50\u679c\uff0c\u4e5f\u5c31\u662f\uf96f\u5728 0 ~ 2,000Hz \u4e4b\u983b\uf961\u7bc4\u570d\uff0c\uf978\u7a2e\u983b\uf961\u5c3a\ufa01\u6709\u8457\uf9d0\u4f3c\u7684\u903c\u8fd1\u8aa4\u5dee\uff0c\u4f46\u662f \u8981\u6c42\u53d6\u51fa\u6b63\u78ba\u7684\u5171\u632f\u5cf0\u983b\uf961\u503c\u3001\u53ca\u76f4\u63a5\u4fee\u6539\u5b83\uff0c\u4e26\uf967\u662f\u5bb9\uf9e0\u7684\u4e8b\uff0c\u56e0\u6b64\u6211\u5011\u63a1\u53d6\u5c0d\u983b\u8b5c</td></tr><tr><td colspan=\"4\">\u5728\u5176\u5b83\u4e09\u7a2e\u983b\uf961\u7bc4\u570d\u4f5c\uf97e\u6e2c\u6642\uff0c\u6885\u723e\u5c3a\ufa01\u7684\u983b\u8b5c\u5305\u7d61\u903c\u8fd1\u8aa4\u5dee\uff0c\u660e\u986f\u5730\u6703\u9ad8\u65bc\u6211\u5011\u63d0\u51fa \u5305\u7d61\u4f5c\u4f38\u5c55\u6216\u6536\u7e2e\u7684\u8655\uf9e4\uff0c\u4ee5\u9054\u5230\u5171\u632f\u5cf0\u983b\uf961\u7684\u79fb\u52d5\u3002</td></tr><tr><td colspan=\"4\">\u7684\u983b\uf961\u5c3a\ufa01\uff0c\u4e26\u4e14\u983b\uf961\u7bc4\u570d\u6108\u5927\u6642\uff0c\u6211\u5011\u6240\u63d0\u7684\u983b\uf961\u5c3a\ufa01\u7684\u903c\u8fd1\u8aa4\u5dee\u6703\u548c\u6885\u723e\u5c3a\ufa01\u7684\u903c \u5c0d\u983b\u8b5c\u5305\u7d61\u4f5c\u4f38\u3001\u7e2e\u8655\uf9e4\u4e00\u500b\uf9b5\u5b50\u5982\u5716 13 \u6240\u793a\uff0c\u5716 13(a)\u756b\u7684\u662f\u539f\u59cb\u7684\u983b\u8b5c\u5305\u7d61\uff0c\uf9a8\u8868</td></tr><tr><td colspan=\"4\">\u8fd1\u8aa4\u5dee\u6108\uf92d\u6108\uf925\u958b\u3002 \u793a\u6b64\u5305\u7d61\u7684\u51fd\uf969\u662f vs(f)\uff0c\u5982\u679c\u6211\u5011\u5c0d\u983b\u8b5c\u5305\u7d61\u4f5c\u6536\u7e2e\uff0c\uf9b5\u5982\uf9a8\u6536\u7e2e\u904e\u7684\u5305\u7d61\u7684\u8868\u793a\u51fd\uf969</td></tr><tr><td colspan=\"4\">(a)\u6a6b\u8ef8\u70ba\u7dda\u6027\u983b\uf961\u4e4b\u5305\u7d61\u66f2\u7dda \u5716 8 \u4ee5\u6885\u723e\u983b\uf961\u5c3a\ufa01\u548c 40 \u968e\u4e4b\uf9ea\u6563\u5012\u983b\u8b5c\u6240\u903c\u9032\u7684\u983b\u8b5c\u5305\u7d61 (b)\u6a6b\u8ef8\u70ba\u6885\u723e\u983b\uf961\u4e4b\u5305\u7d61\u66f2\u7dda \u70ba vc(f)\uff0c\u4e14\uf9a8 vc(f) = vs( 10 7 f)\uff0c\u5247\u6536\u7e2e\u7684\u5305\u7d61\u5c07\u5982\u5716 13(b)\u6240\u793a\uff0c\u5982\u6b64\u5c31\u53ef\u628a\u5168\u90e8\u7684\u5171\u632f \u4e94\u3001\u8a9e\u97f3\u8f49\u63db\u4e4b\u61c9\u7528 \u5cf0\u983b\uf961\u90fd\u8abf\u4f4e\uff1b\u76f8\u53cd\u5730\u5982\u679c\u6211\u5011\u5c0d\u983b\u8b5c\u5305\u7d61\u4f5c\u4f38\u5c55\uff0c\uf9b5\u5982\uf9a8\u4f38\u5c55\u904e\u7684\u5305\u7d61\u7684\u8868\u793a\u51fd\uf969\u70ba</td></tr><tr><td colspan=\"4\">(\u76f8\u7576\u65bc\u4f5c\u983b\uf961\u8ef8\u7684 scaling)\uff0c\u53ca\u57fa\u672c\u983b\uf961\u7684\u79fb\u52d5(frequency shifting)\uff0c\u4ee5\u628a\u8f38\u5165\u8a9e\u97f3\u4fe1\u865f 8(b)\uf9e8\u89c0\u5bdf\u5230\u3002\u5982\u679c\u6539\u6210\u4f7f\u7528\u5df4\u514b\u983b\uf961\u5c3a\ufa01\uff0c\u5247\u5c07\u4f7f\u5305\u7d61\u66f2\u7dda\u904e\ufa01\u8d77\u4f0f\u7684\u60c5\u6cc1\uf901\u52a0\u56b4 \u5716 6 \uf967\u540c\u968e\uf969\u4e4b\uf9ea\u6563\u5012\u983b\u8b5c\u7684\u983b\u8b5c\u5305\u7d61\u903c\u8fd1\u7684\u8aa4\u5dee \u6b64\u5916\uff0c\u5728\u5716 8(a)\u7684\u4f4e\u983b\u90e8\u5206\uff0c\u4e5f\u53ef\u770b\u5230\u983b\u8b5c\u5305\u7d61\u66f2\u7dda\u904e\ufa01\u8d77\u4f0f\u7684\u60c5\u6cc1\uff0c\u539f\u56e0\u662f\u6885\u723e \u983b\uf961\u5c3a\ufa01\u6703\u628a\u4f4e\u983b\u90e8\u5206\u7684\u76f8\u9130\u5cf0\u9ede\u7684\u9593\u9694\u64f4\u5927\u800c\u5f15\u8d77\u904e\ufa01\u8d77\u4f0f\uff0c\u9019\u7a2e\u904e\ufa01\u8d77\u4f0f\u53ef\u5f9e\u5716 5.1 \u8a9e\u97f3\u8f49\u63db\u7cfb\u7d71 \u9019\uf9e8\u6240\uf96f\u7684\u8a9e\u97f3\u8f49\u63db(voice transform ation)\uff0c\u6307\u7684\u662f\u4f5c\u983b\u8b5c\u5305\u7d61\u66f2\u7dda\u7684\u4f38\u5c55\u6216\u6536\u7e2e ve(f)\uff0c\u4e14\uf9a8 ve(f) = vs( 7 10 f)\uff0c\u5247\u4f38\u5c55\u7684\u5305\u7d61\u5c07\u5982\u5716 13(c)\u6240\u793a\uff0c\u5982\u6b64\u5c31\u53ef\u628a\u5168\u90e8\u7684\u5171\u632f\u5cf0\u983b \u5716 14 \u57fa\u983b\u70ba 250Hz \u4e4b\u8ae7\u6ce2\u7d50\u69cb \uf961\u90fd\u8abf\u9ad8\u3002 5.4 \u4fe1\u865f\u91cd\u65b0\u5408\u6210</td></tr><tr><td colspan=\"4\">4.2 \u983b\uf961\u8ef8\u5c3a\ufa01 \u91cd\uff0c\u56e0\u70ba\u5df4\u514b\u5c3a\ufa01\u6703\u8b93\u4f4e\u983b\u90e8\u5206\u6240\u4f54\u7684\u6bd4\uf961\uf901\u70ba\u8b8a\u5927\uff0c\u4e26\u4e14\u76f8\u9130\u7684\u9ad8\u983b\u5cf0\u9ede\u9593\u7684\u9593\u9694\u4e5f \u7684\u97f3\u8272\u6539\u8b8a\u6210\u53e6\u4e00\u500b\u4eba\u7684\u97f3\u8272\uff0c\uf9b5\u5982\u628a\u6210\uf98e\uf981\u751f\u7684\u8a9e\u97f3\u8f49\u8b8a\u6210\u6210\uf98e\u7537\u751f\u7684\u8a9e\u97f3\u3001\u6216\u5c0f\u5b69 \u7531\u65bc\u6211\u5011\u662f\u6839\u64da\u8a9e\u97f3\u97f3\u6846\u5728\u983b\u57df\u4e0a\u5206\u6790\u51fa\u7684\u983b\u8b5c\u5305\u7d61\uff0c\uf92d\u88fd\u505a\u8a9e\u97f3\u8f49\u63db\u7684\u529f\u80fd\uff0c\u6240</td></tr><tr><td colspan=\"4\">\u6703\u8b8a\u5f97\uf901\u7a84\uff0c\u800c\u6703\u4f7f\u9ad8\u983b\u90e8\u5206\u7684\u5305\u7d61\u66f2\u7dda\u8b8a\u5f97\uf901\u70ba\u5e73\uf904\u3002 \u7684\u8a9e\u97f3\u3002\u904e\u53bb\uff0c\u4f5c\u8a9e\u97f3\u8f49\u63db\u5e38\u88ab\u4f7f\u7528\u7684\u662f phase vocoder (PV) \u4e4b\u6280\u8853[12, 13]\uff0c\u4f46\u662f\u57fa\u672c \u4ee5\u76f8\u5c0d\u5730\u4e5f\u5fc5\u9808\u63a1\u53d6\u4ee5\u983b\u57df\uf96b\uf969\u5efa\u69cb\u7684\u4fe1\u865f\u6a21\u578b\uff0c\uf92d\u4f5c\u8a9e\u97f3\u4fe1\u865f\u7684\u91cd\u65b0\u5408\u6210\u3002\u672c\uf941\u6587\u63a1 \u96d6\u7136\u9ad8\u968e\uf969\u7684\uf9ea\u6563\u5012\u983b\u8b5c\u5df2\u7d93\u53ef\u4ee5\u903c\u8fd1\u51fa\uf967\u932f\u7684\u983b\u8b5c\u5305\u7d61\uff0c\uf967\u904e\u7576\u6211\u5011\u89c0\u5bdf\u67d0\u4e9b\u8a9e \u97f3\u4fe1\u865f\u7684\u983b\u8b5c\u6642\uff0c\u767c\u73fe\u9ad8\u968e\uf969\u7684\uf9ea\u6563\u5012\u983b\u8b5c\u6240\u903c\u8fd1\u51fa\u7684\u983b\u8b5c\u5305\u7d61\u4e0a\uff0c\u4ecd\u7136\u6703\u51fa\u73fe\uf967\u5c0f \u7684\u3001\uf967\u80fd\u5ffd\uf976\u7684\u903c\u8fd1\u8aa4\u5dee\u3002\uf9b5\u5982\u5716 7(a)\uf9e8\u7684\u983b\u8b5c\u5305\u7d61\u66f2\u7dda\uff0c\u5b83\u662f\u4f7f\u7528 30 \u968e\u7684\uf9ea\u6563\u5012\u983b \u8b5c\u6240\u903c\u8fd1\u51fa\u7684\uff0c\u5716\u4e2d\u5708\u8d77\uf92d\u7684\u90e8\u5206\u986f\u793a\u767c\u751f\u8f03\u5927\u8aa4\u5dee\u7684\u5730\u65b9\uff0c\u5982\u679c\u6211\u5011\u5c07\u968e\uf969\u63d0\u9ad8\u5230 \u7b2c\u4e8c\u7bc0\uf9e8\u66fe\u63d0\u5230\u5305\u7d61\u66f2\u7dda\u904e\ufa01\u8d77\u4f0f\u7684\u89e3\u6c7a\u65b9\u6cd5\uff0c\u4ea6\u5373\u7a69\u5b9a\u5316\u4e4b\u6280\u8853\u3002\u5230\u76ee\u524d\u70ba\u6b62\uff0c \u7684 PV \u6280\u8853\uff0c\u4e26\uf967\u80fd\u8b93\u983b\u8b5c\u5305\u7d61\u4f38\u7e2e\u548c\u57fa\u983b\u79fb\u52d5\uf978\u8005\u4f5c\u7368\uf9f7\u7684\u63a7\u5236\u3002\u5728\u672c\uf941\u6587\uf9e8\uff0c\u6211\u5011 \u53d6\u7684\u4fe1\u865f\u6a21\u578b\u662f\u8ae7\u6ce2\u52a0\u96dc\u97f3\u6a21\u578b(harmonic-plus-noise m odel, HNM) [9, 10] \uff0c\u5b83\u662f\u7531 Y. \u6211\u5011\u90fd\u53ea\u628a\u6b63\u898f\u5316\uf96b\uf969 \u03bb \u8a2d\u70ba 0.0002\uff0c\u70ba\uf9ba\u6539\u5584\u4e0a\u8ff0\u7684\u904e\ufa01\u8d77\u4f0f\u60c5\u5f62\uff0c\u6211\u5011\u5617\u8a66\u52a0\u5927\u6b63 \u6c7a\u5b9a\u63a1\u53d6\u96fb\u8166\u97f3\uf914\u4e4b\u52a0\u6cd5\u5f0f\u5408\u6210\u6cd5(additive synthesis) [12]\u53ca HNM \u7684\u89c0\uf9a3[9]\uff0c\uf92d\u8b93\u983b\u8b5c Stylianou \u6240\u63d0\u51fa\uff0c\u9664\uf9ba\u8003\u616e\u8a9e\u97f3\u4fe1\u865f\uf9e8\u4f4e\u983b\u90e8\u5206\u7684\u8ae7\u6ce2\u7279\u6027\u4e4b\u5916\uff0c\u9084\u8003\u616e\uf9ba\u9ad8\u983b\u90e8\u5206\u7684 \u898f\u5316\uf96b\uf969 \u03bb \uff0c\u7d50\u679c\u5f97\u5230\u5982\u5716 9 \u6240\u793a\u7684\u983b\u8b5c\u5305\u7d61\u66f2\u7dda\uff0c\u5716 9(a)\uf9e8\u8a2d\u5b9a \u03bb = 0.001 \uff0c\u800c\u5728\u5716 \u5305\u7d61\u4f38\u7e2e\u548c\u57fa\u983b\u79fb\u52d5\uf978\u8005\u53ef\u4ee5\u88ab\u5206\u5225\u5730\u63a7\u5236\uff0c\u800c\u5be6\u4f5c\u4e0a\u5247\u9700\u8981\u61c9\u7528\u524d\u9762\uf96f\u660e\u7684\u983b\u8b5c\u5305\u7d61 \u96dc\u97f3\u7279\u6027\uff0c\u6240\u4ee5\u53ef\u4ee5\uf901\u78ba\ufa00\u5730\u638c\u63e1\u8a9e\u97f3\u4fe1\u865f\u7684\u7279\u6027\u3002HNM \u6a21\u578b\u63d0\u4f9b\uf9ba\u4e00\u500b\u6700\u5927\u6709\u8072\u983b 9(b)\uf9e8\u8a2d\u5b9a \u03bb = 0.01\u3002\u96d6\u7136\u96a8\u8457\u6b63\u898f\u5316\uf96b\uf969 \u03bb \u7684\u589e\u52a0\uff0c\u4f4e\u983b\u90e8\u5206\u7684\u983b\u8b5c\u5305\u7d61\u66f2\u7dda\u6703\u6f38\u8da8 \u4e4b\u4f30\u8a08\u65b9\u6cd5\uff0c\uf92d\u6c42\u5f97\u8f38\u5165\u8a9e\u97f3\u5404\u97f3\u6846\u7684\u983b\u8b5c\u5305\u7d61\u66f2\u7dda\uff0c\u7136\u5f8c\u624d\u64da\u4ee5\u4f5c\u983b\u8b5c\u5305\u7d61\u7684\u4f38\u7e2e\u3002 \uf961(maximum voiced frequency , M VF)\u7684\u5075\u6e2c\u65b9\u6cd5\uff0c\u627e\u51fa MVF \u4e4b\u5f8c\uff0c\u5c31\u53ef\u628a\u4e00\u500b\u8a9e\u97f3\u97f3 40\uff0c\u5247\u6703\u5f97\u5230\u5982\u5716 7(b)\uf9e8\u7684\u983b\u8b5c\u5305\u7d61\u66f2\u7dda\uff0c\u96d6\u7136 1,000Hz \u8207 3,000Hz \u9644\u8fd1\u7684\u8aa4\u5dee\uff0c\u5df2\u7d93 \u5e73\uf904\uff0c\uf967\u904e\u983b\u8b5c\u5305\u7d61\u7684\u8d77\u4f0f\u7a0b\ufa01\u4e5f\u53d7\u5230\uf9ba\u9650\u5236\uff0c\u800c\u5c0e\u81f4\u6574\u9ad4 L \u500b\u5cf0\u9ede\u7684\u903c\u8fd1\u8aa4\u5dee\u4e5f\u96a8\u8457 \u6211\u5011\u6240\u88fd\u505a\u7684\u8a9e\u97f3\u8f49\u63db\u7cfb\u7d71\uff0c\u5176\u7a0b\u5f0f\u4ecb\u9762\u5982\u5716 11 \u6240\u793a\uff0cpitch contour \u5340\u584a\u986f\u793a\u5f9e\u539f\u59cb\u8a9e \u6846\u7684\u983b\u8b5c\u5206\u5272\u6210\u4f4e\u983b\u7684\u8ae7\u6ce2\u90e8\u5206\u3001\u548c\u9ad8\u983b\u7684\u96dc\u97f3\u90e8\u5206\uff0c\u5982\u5716 14 \u6240\u793a\u3002 \u7372\u5f97\uf9ba\u4e00\u4e9b\u6539\u5584\uff0c\uf967\u904e\u9084\u662f\uf967\u5920\uf9e4\u60f3\u3002 \u589e\u52a0\u3002 \u97f3\u6240\u5206\u6790\u51fa\u7684\u57fa\u9031\u8ecc\u8de1\uff0cwaveform \u5340\u584a\u4e0a\u4e0b\u5206\u5225\u986f\u793a\u539f\u59cb\u8a9e\u97f3\u53ca\u8f49\u63db\u904e\u8a9e\u97f3\u7684\u6ce2\u5f62\u3002 \u5716 11 \u8a9e\u97f3\u8f49\u63db\u7a0b\u5f0f\u4e4b\u4ecb\u9762 \uf9a8\u7b2c i \u500b\u8a9e\u97f3\u97f3\u6846\u7531 5.3 \u5b50\u7bc0\u6240\u6c42\u51fa\u7684\u8ae7\u6ce2\uf96b\uf969\u662f i k</td></tr></table>" | |
| }, | |
| "TABREF4": { | |
| "text": "\u6642\u5c31\u4ee5\uf91b\uf969\uf92d\u8a2d\u5b9a\uff0c \u6b64\u5916 22,050 \u662f\u53d6\u6a23\uf961\u3002 \u95dc\u65bc\u96dc\u97f3(noise)\u4fe1\u865f\u7684\u5408\u6210\uff0c\u6211\u5011\u63a1\u53d6 HNM \u6587\u737b\u4e0a\u63d0\u5230\u7684\u4e00\u500b\u4f5c\u6cd5\uff0c\u5c31\u662f\u628a\u96dc\u97f3 \u7576\u4f5c\u662f MVF \u4e4b\u5f8c\u983b\uf961\u9593\u9694\u56fa\u5b9a\u70ba 100Hz\u3001\u4f46\u632f\u5e45\u6703\u96a8\u6642\u9593\u6539\u8b8a\u4e4b\u4e00\u4e9b\u5f26\u6ce2\u7684\u52a0\u7e3d\u3002\uf9a8 mvf \u70ba\u7b2c i \u548c\u7b2c i+1 \u97f3\u6846\u7684 MVF \u7684\u8f03\u5927\u8005\uff0c\u5247\u4f9d mvf \u53ef\u6c7a\u5b9a\u983b\uf961 index \u4e4b\u4e0b\u9650 KL=mvf / 100, \u800c\u5176\u4e0a\u9650\u660e\u986f\u5730\u662f KU=22,050 / 100\uff0c\u5982\u6b64\uff0c\u5c0d\u65bc\u7b2c i \u548c\u7b2c i+1 \u97f3\u6846\u4e4b\u9593\u6642\u523b t \u7684\u96dc /guhy.csie.ntust.edu.tw/dcc/vt.html \u53bb\u4e0b\u8f09\u548c\u8a66\u807d\u3002\u5728\u6b64\u8a55\u4f30\u7684\u9805\u76ee\u6709\uf978\u9805\uff0c\u5206\u5225\u662f \u97f3\u8272\u8fa8\uf9fc\ufa01\u3001\u548c\u8a9e\u97f3\u54c1\u8cea\uff0c\u97f3\u8272\u8fa8\uf9fc\ufa01\u5728\u65bc\u8a55\u4f30\u8f49\u63db\u51fa\uf92d\u7684\u8a9e\u97f3\u97f3\u8272\u8207\u76ee\u6a19\u97f3\u8272\u7684\u63a5\u8fd1 \u7a0b\ufa01\uff0c\u800c\u8a9e\u97f3\u54c1\u8cea\u5728\u65bc\u8a55\u4f30\u8f49\u63db\u51fa\uf92d\u7684\u8a9e\u97f3\u4fe1\u865f\u807d\u8d77\uf92d\u662f\u5426\u6e05\u695a\u4e14\u7121\u5931\u771f\u3002 \u6211\u5011\u9080\u8acb\uf9ba 13 \u4f4d\u53d7\u6e2c\u8005\uf92d\u9032\ufa08\u807d\u6e2c\u8a55\u4f30\uff0c\u9996\u5148\u662f\u5c0d\uf981\u6027\u539f\u59cb\u8a9e\uf906\u53ca\u8f49\u63db\u51fa\u7684\u8a9e\uf906 \u4f5c\u807d\u6e2c\uff0c\u5be6\u9a57\u6642\u4e00\u6b21\u8b93\u4e00\u4f4d\u53d7\u6e2c\u8005\uf9b0\u807d 3 \u7d44\u8a9e\uf906(\uf981\u6027\u539f\u59cb\u3001\u7537\u6027\u8f49\u63db\u3001\u5b69\u7ae5\u8f49\u63db)\uff0c\u7136 \u5f8c\u8acb\u4ed6\u5c0d\u9019 3 \u7d44\u8a9e\uf906\u5404\u7d66\u4e00\u500b\u8a55\u5206\uff0c\u8a55\u5206\u7684\u7bc4\u570d\u7531\u6700\u9ad8 5 \u5206\u5230\u6700\u4f4e 1 \u5206\uff0c5 \u5206\u4ee3\u8868\u975e\u5e38 \u7684\u554f\u984c\u3002\u95dc\u65bc\u983b\u8b5c\u5cf0\u9ede\u4e4b\u6311\u9078\uff0c\u6211\u5011\u61c9\u7528 HNM \u7684\u89c0\uf9a3\uff0c\u5148\u628a\u983b\u8b5c\u5206\u5272\u6210\u4f4e\u983b \u8ae7\u6ce2\u548c\u9ad8\u983b\u96dc\u97f3\uf978\u500b\u90e8\u5206\uff0c\u7136\u5f8c\u5728\u4f4e\u983b\u8ae7\u6ce2\u90e8\u5206\u4f9d\u64da\u6240\u6c42\u51fa\u7684\u57fa\u983b\u503c\u53bb\u5075\u6e2c\u8ae7\u6ce2\u9802\u9ede\uff0c \u800c\u5728\u9ad8\u983b\u96dc\u97f3\u90e8\u5206\uff0c\u5247\u4f9d\u64da\u4e00\u822c cepstrum \u5e73\uf904\u904e\u7684\u983b\u8b5c\u66f2\u7dda\u53bb\u627e\u51fa\u9ad8\u904e\u66f2\u7dda\u7684\u983b\u8b5c\u5cf0 \u9ede\u3002\u6b64\u5916\uff0c\u95dc\u65bc\u983b\uf961\u8ef8\u5c3a\ufa01\u7684\u8f49\u63db\uff0c\u6587\u737b\u4e0a\u96d6\u7136\u63d0\u5230 mel \u5c3a\ufa01\u548c bark \u5c3a\ufa01\uff0c\u4f46\u662f\u6211\u5011 \u5f9e\u89c0\u5bdf\u903c\u8fd1\u51fa\u7684\u983b\u8b5c\u5305\u7d61\u66f2\u7dda\uff0c\u767c\u73fe mel \u5c3a\ufa01\u548c bark \u5c3a\ufa01\u6240\u5f97\u5230\u7684\u983b\u8b5c\u5305\u7d61\u4ecd\u7136\u662f\uf967 \u5920\uf9e4\u60f3\u7684\uff0c\u5728\u4e2d\u983b\u5e36(3KHz~6KHz)\u5e38\u5e38\u6703\u51fa\u73fe\u932f\u8aa4\u7684\u983b\u8b5c\u5305\u7d61\uff0c\u56e0\u6b64\u6211\u5011\u5728\u4e00\u756a\u5617\u8a66", | |
| "num": null, | |
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