Patent SG-11201904752Q-A (SG)
Title: Coding of multiple audio signals
Inventor: ATTI VENKATRAMAN
IPC: G10L19/008
Filed: 2017-12-11
Abstract: ResiduaScalin Uni Scaling Factor 240 (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 0111111010 0111 °nolo uvula° oimIE (10) International Publication Number WO 2018/136166 Al (51) International Patent Classification: (74) Agent: TOLER, Jeffrey G.; 8500 Bluffstone Cove, Suite G10L 19/008 (2013.01) A201, Austin, Texas 78759 (US). (21) International Application Number: (81) Designated States (unless otherwise indicated, for every PCT/US2017/065542 kind of national protection available): AE, AG, AL, AM, (22) International Filing Date: 11 December 2017 (11.12.2017) 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, (25) Filing Language: English KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, (26) Publication Language: English 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, (30) Priority Data: SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, 62/448,287 19 January 2017 (19.01.2017) US TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. 15/836,604 08 December 2017 (08.12.2017) US (84) Designated States (unless otherwise indicated, for every (71) Applicant: QUALCOMM INCORPORATED [US/US]; kind of regional protection available): ARIPO (BW, GH, Attn: International IP Administration, 5775 Morehouse Dri- GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, ve, San Diego, California 92121-1714 (US). UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, (72) Inventors: ATTI, Venkatraman; 5775 Morehouse Drive, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, San Diego, California 92121-1714 (US). CHEBIYYAM, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, Venkata Subrahmanyam Chandra Sekhar; 5775 More- MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, house Drive, San Diego, California 92121-1714 (US). (54) Title: CODING OF MULTIPLE AUDIO SIGNALS Reference Channel 220 Mid Channel 232 Frequency-Domain Reference Channel 224 Frequency-Domain Reference Channel 224 Mid Channel Encoder 214 Tian sibrin —/-11' Unit 204 ) ). Transform Unit 202 Side Channel 234 '‘) Stereo Channel Adjustment Unit 206 Inter-Channel Mismatch Value 228 Down-Mixer 208 Residual Generation Unit 210 Predicted Side Channel 235 t...--- Encoded M Channel 24 Bitstream 248A S MUX 218 Adjusted Frequency-Domain Target Charnel 230 Encoded ---- Residual Channel 246 Residual Channel 238 Residual Channel Encoder 216 Target Channel 222 A Inter-Channel Mismatch Value 228 Frequency-Domain Target Channel 226 114A ' FIG. 2 Sidled Residual Channel 242 1-1 00 O C (57) : A residual scaling unit is configured to determine a scaling factor for a residual channel based on an inter-channel mismatch value. The inter-channel mismatch value is indicative of a temporal alignment between a reference channel and a target channel. The residual scaling unit is further configured to scale (e.g., attenuate) the residual channel by the scaling factor to generate a scaled residual channel. A residual channel encoder is configured to encode the scaled residual channel as part of a bitstream. [Continued on next page] WO 2018/136166 Al MIDEDIM01101 DIVIIMEIDI0EMIIMEM111111111111011111111111111111 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))