Patent SG-11201904753W-A (SG)
Title: Inter-channel phase difference parameter modification
Inventor: ATTI VENKATRAMAN
IPC: G10L19/008
Filed: 2017-12-11
Abstract: StereoParameters (e.g., IPD Parameter Values 164, 1TD Parameter Value 166, Mismatch Value 116, etc.) / s14 118A Stereo Parameter Adju tment Unit :'12 (e g., IPD Parameter Modification L nit) Comparison Unit 314 Modification Unit 316 FIG. 3 1TD Parameter Value 166 (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 26 July 2018 (26.07.2018) WIP0 I PCT omit VIII °nolo Oil ioo Imo oimIE (10) International Publication Number WO 2018/136167 Al (51) International Patent Classification: G10L 19/008 (2013.01) (21) International Application Number: PCT/US2017/065547 (22) International Filing Date: 11 December 2017 (11.12.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/448,297 19 January 2017 (19.01.2017) US 15/836,618 08 December 2017 (08.12.2017) US (71) Applicant: QUALCOMM INCORPORATED [US/US]; ATTN: International IP Administration, 5775 Morehouse Drive, San Diego, California 92121-1714 (US). (72) Inventors: ATTI, Venkatraman; 5775 Morehouse Drive, San Diego, California 92121-1714 (US). CHEBIYYAM, Venkata Subrahmanyam Chandra Sekhar; 5775 More- house Drive, San Diego, California 92121-1714 (US). (74) Agent: TOLER, JEFFREY G.; 8500 Bluffstone Cove, Suite A201, Austin, Texas 78759 (US). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, (54) Title: INTER-CHANNEL PHASE DIFFERENCE PARAMETER MODIFICATION Encoded Mid Channel 340 Decoded Frequency-Domain Mid Channel 348 Frequency-Domain Left Channel 354 Time-Domain Left Channel 358 Left Channel 126 Mid Channel Decoder 302 Transform Unit 306 Inverse Transform Unit 318 Inter-Channel Alignment Unit 322 Up-Mixer 3 10 Decoded Mid Channel 344 Decoded Side Channel 346 Decoded Frequency-Domain Side Channel 350 Transform Unit 308 Frequency-Domain Right Channel 356 S Inverse Transform Unit 320 Side Channel Decoder 304 Encoded Side Channel 342 Modified IPD • Parameter Values Stereo Parameters 162 Time-Domain Right Channel 360 Right Channel 128 1-1 N 00 O C (57) : A method includes performing modifying, at a decoder, at least a portion of inter-channel phase difference (IPD) parameter values based on a mismatch value to generate modified IPD parameter values. The mismatch value is indicative of an amount of temporal misalignment between an encoder-side reference channel and an encoder-side target channel. The modified IPD parameter values are applied to a decoded frequency-domain mid channel during an up-mix operation. [Continued on next page] WO 2018/136167 Al MIDEDIM01101 DIVIIMEIDI0EMIIMEM1111111111111111101111111111 TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: — with international search report (Art. 21(3))