Patent SG-11201909348Q-A (SG)
Title: Stereo parameters for stereo decoding
Inventor: CHEBIYYAM VENKATA SUBRAHMANYAM CHANDRA SEKHAR
IPC: G10L19/005
Filed: 2018-04-27
Abstract: FirstPortion of FD Decoded Mid Channel Second Portion of FD Decoded Mid Channel 173 First Portion of Mid Channel 191 Second Portion of Mid Channel 193 Transform 204 First Portion of Decoded Mid Channel 170 Second Portion of Decoded Mid Channel 172 Upmixer 206 Stereo Parameter Interpolator 208 1 Quantized FD Shift Value 281 Quantized Stereo Para 183 2 nd Interpolated FD Shift Value 285 2 Interpolated i ' d Stereo Parameter 287 Shifter 214 Shift Value Interpolator 216 Quantized TD Shift Value 291 Interpolated TD Shift Value 295 Inverse Transform 210 Inverse Transform 212 Mid Channel Decoder 202 Frequency-Domain Channel 254 Frequency-Domain Channel 256 Time-Domain Channel 264 Time-Domain Channel 266 Second Output Signal 128 Stereo Parameters 201 W O 20 18/ 2085 15 Al (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 15 November 2018 (15.11.2018) WIPO I PCT omit VIII °nolo Holollm °HIND oimIE (10) International Publication Number WO 2018/208515 Al (51) International Patent Classification: GlOL 19/005 (2013.01) G1OL 19/008 (2013.01) (21) International Application Number: PCT/US2018/029872 (22) International Filing Date: 27 April 2018 (27.04.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/505,041 11 May 2017 (11.05.2017) US 15/962,834 25 April 2018 (25.04.2018) US (71) Applicant: QUALCOMM INCORPORATED [US/US]; ATTN: International IP Administration, 5775 Morehouse Drive, San Diego, California 92121-1714 (US). (72) Inventors: CHEBIYYAM, Venkata Subrahmanyam Chandra Sekhar; 590 Mill Creek Lane, #205, Santa Clara, California 95054 (US). ATTI, Venkatraman; 5775 More- house Drive, San Diego, California 92121-1714 (US). (74) Agent: TOLER LAW GROUP, PC et al.; 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. (54) Title: STEREO PARAMETERS FOR STEREO DECODING 118 Time-Domain Channel 260 Time-Domain Channel 262 Frequency-Domain Channel 250 Frequency-Domain Channel 252 First Output Signal 126 FIG. 2 (57) : An apparatus includes a receiver and a decoder. The receiver is configured to receive a bitstream that includes an encoded mid channel and a quantized value representing a shift between a reference channel associated with an encoder and a target channel associated with the encoder. The quantized value is based on a value of the shift. The value of the shift is associated with the encoder and has a greater precision than the quantized value. The decoder is configured to decode the encoded mid channel to generate a decoded mid channel and to generate a first channel based on the decoded mid channel. The decoder is further configured to generate a second channel based on the decoded mid channel and the quantized value. The first channel corresponds to the reference channel and the second channel corresponds to the target channel. [Continued on next page] WO 2018/208515 Al MIDEDIMOMOIDEIRDERIHNOIRMIII111011111111111111111 (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, 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))