SG11201905527UA - Multi channel decoding - Google Patents

Multi channel decoding

Info

Publication number
SG11201905527UA
SG11201905527UA SG11201905527UA SG11201905527UA SG11201905527UA SG 11201905527U A SG11201905527U A SG 11201905527UA SG 11201905527U A SG11201905527U A SG 11201905527UA SG 11201905527U A SG11201905527U A SG 11201905527UA SG 11201905527U A SG11201905527U A SG 11201905527UA
Authority
SG
Singapore
Prior art keywords
transform
international
mid channel
window
frame
Prior art date
Application number
SG11201905527UA
Inventor
Venkata Subrahmanyam Chandra Sekhar Chebiyyam
Venkatraman Atti
Original Assignee
Qualcomm Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of SG11201905527UA publication Critical patent/SG11201905527UA/en

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/008—Systems employing more than two channels, e.g. quadraphonic in which the audio signals are in digital form, i.e. employing more than two discrete digital channels
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Mathematical Physics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Stereophonic System (AREA)
  • Peptides Or Proteins (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

364 Window and Overlap- Add 380 Stereo Cues L 162 Right Channel 366 /- 382 1 128 Window and Overlap- Add 126 Left Channel 164 Side-Band Bitstream 1.- Side-Band Decoder i 180 x 172 182 r 308 Transform 184, 186 [ 118 Up-Mixer Window 1 173 Stereo Parameter Interpolator r 306 355 352f r 172 354 r 309 Window Transform r 304 Mid-Band Bitstream Mid-Band Decoder \ ► _ 166 360 314 /362 f 316 Inverse Transform FIG. 3 Inverse Transform O 00 O O (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 09 August 2018 (09.08.2018) WIPO I PCT ill IIIIIl °mons °nolo DID Mo mil 110 111110 oimIE (10) International Publication Number WO 2018/144590 Al (51) International Patent Classification: GlOL 19/008 (2013.01) GlOL 19/022 (2013.01) (21) International Application Number: PCT/US2018/016216 (22) International Filing Date: 31 January 2018 (31.01.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/454,652 03 February 2017 (03.02.2017) US 15/884,136 30 January 2018 (30.01.2018) 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; 5775 Morehouse Drive, San Diego, California 92121-1714 (US). ATTI, Venkatraman; 5775 Morehouse 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, (54) Title: MULTI CHANNEL DECODING (57) : A method includes generating a windowed time-domain mid channel by applying two first asymmetric windows to a first frame of a time-domain mid channel and applying two second asymmetric windows to a second frame of the time-domain mid channel. The method includes transforming the windowed time-domain mid channel to a transform domain to generate sets of transform-domain mid channel data including first transform-domain mid channel data corresponding to a first mid channel window of the first frame and second transform-domain mid channel data corresponding to a second mid channel window of the first frame. The method includes performing an up-mix operation using the sets of transform-domain mid channel data, stereo parameters from the bit stream, and an interpolated parameter determined using an unevenly weighted interpolation between a first stereo parameter value associated with the first frame and a second stereo parameter value associated with the second frame. [Continued on next page] WO 2018/144590 Al MIDEDIMOMMIONER13010MOIVINEDIMOVOIS 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, 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))
SG11201905527UA 2017-02-03 2018-01-31 Multi channel decoding SG11201905527UA (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201762454652P 2017-02-03 2017-02-03
US15/884,136 US10210874B2 (en) 2017-02-03 2018-01-30 Multi channel coding
PCT/US2018/016216 WO2018144590A1 (en) 2017-02-03 2018-01-31 Multi channel decoding

Publications (1)

Publication Number Publication Date
SG11201905527UA true SG11201905527UA (en) 2019-08-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
SG11201905527UA SG11201905527UA (en) 2017-02-03 2018-01-31 Multi channel decoding

Country Status (9)

Country Link
US (1) US10210874B2 (en)
EP (1) EP3577647B1 (en)
KR (1) KR102264105B1 (en)
CN (1) CN110249385B (en)
AU (1) AU2018217052B2 (en)
BR (1) BR112019015509A2 (en)
SG (1) SG11201905527UA (en)
TW (1) TWI696173B (en)
WO (1) WO2018144590A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020094263A1 (en) * 2018-11-05 2020-05-14 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and audio signal processor, for providing a processed audio signal representation, audio decoder, audio encoder, methods and computer programs

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070001111A (en) * 2004-01-28 2007-01-03 코닌클리케 필립스 일렉트로닉스 엔.브이. Method and apparatus for time scaling of a signal
WO2005086139A1 (en) * 2004-03-01 2005-09-15 Dolby Laboratories Licensing Corporation Multichannel audio coding
MX2011011399A (en) * 2008-10-17 2012-06-27 Univ Friedrich Alexander Er Audio coding using downmix.
CN101552006B (en) * 2009-05-12 2011-12-28 武汉大学 Method for adjusting windowing signal MDCT domain energy and phase and device thereof
EP2476113B1 (en) * 2009-09-11 2014-08-13 Nokia Corporation Method, apparatus and computer program product for audio coding
TWI443646B (en) * 2010-02-18 2014-07-01 Dolby Lab Licensing Corp Audio decoder and decoding method using efficient downmixing
BR122019013299B1 (en) * 2010-04-09 2021-01-05 Dolby International Ab apparatus and method for emitting a stereophonic audio signal having a left channel and a right and middle channel readable by a non-transitory computer
US20120029926A1 (en) * 2010-07-30 2012-02-02 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for dependent-mode coding of audio signals
CN101944362B (en) * 2010-09-14 2012-05-30 北京大学 Integer wavelet transform-based audio lossless compression encoding and decoding method
US9601122B2 (en) * 2012-06-14 2017-03-21 Dolby International Ab Smooth configuration switching for multichannel audio
EP2717262A1 (en) * 2012-10-05 2014-04-09 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Encoder, decoder and methods for signal-dependent zoom-transform in spatial audio object coding
EP2720222A1 (en) * 2012-10-10 2014-04-16 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for efficient synthesis of sinusoids and sweeps by employing spectral patterns
SG11201506542QA (en) 2013-02-20 2015-09-29 Fraunhofer Ges Forschung Apparatus and method for encoding or decoding an audio signal using a transient-location dependent overlap
US9607624B2 (en) * 2013-03-29 2017-03-28 Apple Inc. Metadata driven dynamic range control
EP2830060A1 (en) * 2013-07-22 2015-01-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Noise filling in multichannel audio coding

Also Published As

Publication number Publication date
AU2018217052B2 (en) 2022-06-30
WO2018144590A1 (en) 2018-08-09
TWI696173B (en) 2020-06-11
US20180226080A1 (en) 2018-08-09
US10210874B2 (en) 2019-02-19
CN110249385B (en) 2023-05-30
EP3577647B1 (en) 2020-12-16
CN110249385A (en) 2019-09-17
KR102264105B1 (en) 2021-06-10
AU2018217052A1 (en) 2019-07-11
TW201835896A (en) 2018-10-01
KR20190111951A (en) 2019-10-02
EP3577647A1 (en) 2019-12-11
BR112019015509A2 (en) 2020-03-17

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