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公开(公告)号：ZA201708558B
公开(公告)日：2021-06-30
申请号：ZA201708558
申请日：2017-12-15
Applicant: QUALCOMM INC
Abstract: A device for signal processing includes a memory and a processor. The memory is configured to store a parameter associated with a bandwidth-extended audio stream. The processor is configured to select a plurality of non-linear processing functions based at least in part on a value of the parameter. The processor is also configured to generate a high-band excitation signal based on the plurality of non-linear processing functions.
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82.发明专利
公开(公告)号：ES2823294T3
公开(公告)日：2021-05-06
申请号：ES17731782
申请日：2017-06-13
Applicant: QUALCOMM INC
IPC: G10L19/008 , G10L19/002 , G10L19/22
Abstract: Un dispositivo (104, 114) para procesar señales de audio que comprende: un analizador de desajuste temporal entre canales (124) configurado para determinar un valor de desajuste temporal entre canales (163) indicativo de una desalineación temporal entre una primera señal de audio (130) y una segunda señal de audio (132); un selector de modo de diferencia de fase entre canales, IPD, (108) configurado para seleccionar un modo de IPD (156, 465, 467) basado al menos en parte en si el valor de desajuste temporal entre canales (163) satisface un umbral de diferencia y si un valor de intensidad (150) asociado con el valor de desajuste temporal entre canales satisface un umbral de intensidad; y un estimador de IPD (122) configurado para determinar los valores de IPD (161) basándose en la primera señal de audio (130) y la segunda señal de audio (132), teniendo los valores de IPD (161) una resolución (165, 456, 476) correspondiente al modo de IPD seleccionado (156, 465, 467).
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公开(公告)号：CA3001579C
公开(公告)日：2021-01-12
申请号：CA3001579
申请日：2016-09-26
Applicant: QUALCOMM INC
IPC: G10L19/008 , G10L21/00 , G10L25/06 , G10L25/51
Abstract: A device includes an encoder. The encoder is configured to receive two audio channels. The encoder is also configured to determine a mismatch value indicative of an amount of a temporal mismatch between the two audio channels. The encoder is further configured to determine, based on the mismatch value, at least one of a target channel or a reference channel. The target channel corresponds to a lagging audio channel of the two audio channels and the reference channel corresponds to a leading audio channel of the two audio channels. The encoder is also configured to generate a modified target channel by adjusting the target channel based on the offset value. The encoder is further configured to generate at least one encoded channel based on the reference channel and the modified target channel.
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公开(公告)号：CA3004770C
公开(公告)日：2020-12-29
申请号：CA3004770
申请日：2016-12-09
Applicant: QUALCOMM INC
IPC: G10L19/008
Abstract: A method of non-causally shifting a channel includes estimating comparison values at an encoder. Each comparison value is indicative of an amount of temporal mismatch between a previously captured reference channel and a corresponding previously captured target channel. The method also includes smoothing the comparison values to generate smoothed comparison values based on historical comparison value data and a smoothing parameter. The method further includes estimating a tentative shift value based on the smoothed comparison values. The method also includes non-causally shifting a target channel by a non-causal shift value to generate an adjusted target channel that is temporally aligned with a reference channel. The non-causal shift value is based on the tentative shift value. The method further includes generating, based on reference channel and the adjusted target channel, at least one of a mid-band channel or a side-band channel.
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Patent Agency Ranking
公开(公告)号：SG11202001284YA
公开(公告)日：2020-03-30
申请号：SG11202001284Y
申请日：2018-09-10
Applicant: QUALCOMM INC
IPC: G10L19/008
Abstract: A method of coding for multi-channel audio signals includes estimating comparison values at an encoder indicative of an amount of temporal mismatch between a reference channel and a corresponding target channel. The method includes smoothing the comparison values to generate short-term and first long-term smoothed comparison values. The method includes calculating a cross-correlation value between the comparison values and the short-term smoothed comparison values. The method also includes adjusting the first long-term smoothed comparison values in response to comparing the cross-correlation value with a threshold. The method further includes estimating a tentative shift value and non-causally shifting the target channel by a non-causal shift value to generate an adjusted target channel. The non-causal shift value is based on the tentative shift value. The method further includes generating, based on reference channel and the adjusted target channel, at least one of a mid-band channel or a side-band channel.
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公开(公告)号：AU2018345331A1
公开(公告)日：2020-03-19
申请号：AU2018345331
申请日：2018-10-01
Applicant: QUALCOMM INC
IPC: G10L19/008 , G10L19/22 , G10L21/038
Abstract: A device includes a receiver configured to receive an inter-channel prediction gain parameter and an encoded audio signal. The encoded audio signal includes an encoded mid signal. The device also includes a decoder configured to generate a synthesized mid signal based on the encoded mid signal. The decoder is configured to generate an intermediate synthesized side signal based on the synthesized mid signal and the inter-channel prediction gain parameter. The decoder is further configured to filter the intermediate synthesized side signal to generate a synthesized side signal.
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公开(公告)号：SG10201912525UA
公开(公告)日：2020-02-27
申请号：SG10201912525U
申请日：2016-05-26
Applicant: QUALCOMM INC
Abstract: A device for signal processing includes a memory and a processor. The memory is configured to store a parameter associated with a bandwidth-extended audio stream. The processor is configured to select a plurality of non-linear processing functions based at least in part on a value of the parameter. The processor is also configured to generate a high-band excitation signal based on the plurality of non-linear processing functions.
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公开(公告)号：SG11201909348QA
公开(公告)日：2019-11-28
申请号：SG11201909348Q
申请日：2018-04-27
Applicant: QUALCOMM INC
IPC: G10L19/005 , G10L19/008
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))
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公开(公告)号：SG11201908390UA
公开(公告)日：2019-11-28
申请号：SG11201908390U
申请日：2018-04-19
Applicant: QUALCOMM INC
IPC: G10L19/008 , G10L19/02 , G10L21/038
Abstract: FirstLoudspeaker Second Output Channel 128 Second Loudspeaker 144 First Audio Channel 130 (\"Reference Channel\") Second Audio Channel 132 (Target Channel\") Second Microphone 148 First Microphone 146 Modified Non Harmonic HB Flag (y) 920 Down-Mix Bitstream 216 ICBWE Bitstream 242 High-Band Mid Channel Bitstream 244 Low-Band Bitstream 246 Modified Non Harmonic FIB Flag (y) 920 Down-Mix Bitstream 216 ICBWE Bitstream 242 High-Band Mid Channel Bitstream 244 Low-Band Bitstream 246 100 First Output Channel 126 First Device 104 Memory 153 Instructions 191 Transmitter 110 Input I nterface(s) 112 Encoder 200 Inter-Channel BWE Encoder 204 Non Harmonic HB Flag (x) 910 Modified Non Harmonic HB Flag (y) 920 ( 106 Second Device Decoder 300 I ICBWE Decoder 306 I Modified Non Harmonic HB Flag (y) 920 (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 25 October 2018 (25.10.2018) WIP0 I PCT ill IIIIIl °million °nolo mu imm Eno iflo oimIE (10) International Publication Number WO 2018/195299 Al (51) International Patent Classification: G1OL 19/008 (2013.01) G1OL 21/038 (2013.01) G1OL 19/02 (2013.01) (21) International Application Number: PCT/US2018/028338 (22) International Filing Date: 19 April 2018 (19.04.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/488,654 21 April 2017 (21.04.2017) US 15/956,645 18 April 2018 (18.04.2018) 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: NON-HARMONIC SPEECH DETECTION AND BANDWIDTH EXTENSION IN A MULTI-SOURCE ENVIRON- = MENT FIG. 1 M Sound Source152 (57) : A device includes a multi-channel encoder configured to receive a first audio signal and a second audio signal, to perform a downmix operation on the first audio signal and the second audio signal to generate a mid signal, to generate a low-band mid signal and a high-band mid signal based on the mid signal, and to determine, based at least partially on a low band voicing value corresponding to the low band signal and a gain value corresponding to the high-band mid signal, a value of a multi-source flag that 00 flag associated with the high-band mid signal. The multi-channel encoder is configured to generate a high-band mid excitation signal O based on the multi-source flag and to generate a bitstream based on the high-band mid excitation signal. The device also includes a transmitter configured to transmit the bitstream and the multi-source flag to a second device. C [Continued on next page] WO 2018/195299 Al OII (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))
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