SG11201907670UA - Inter-channel bandwidth extension - Google Patents

Inter-channel bandwidth extension

Info

Publication number
SG11201907670UA
SG11201907670UA SG11201907670UA SG11201907670UA SG 11201907670U A SG11201907670U A SG 11201907670UA SG 11201907670U A SG11201907670U A SG 11201907670UA SG 11201907670U A SG11201907670U A SG 11201907670UA
Authority
SG
Singapore
Prior art keywords
channel
bitstream
band
band mid
international
Prior art date
Application number
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 SG11201907670UA publication Critical patent/SG11201907670UA/en

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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
    • 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
    • G10L19/04—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 predictive techniques
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • 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
    • G10L19/04—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 predictive techniques
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/083—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being an excitation gain
    • 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
    • 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
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems
    • H04S1/007—Two-channel systems in which the audio signals are in digital form
    • 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
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
    • H04S2400/03—Aspects of down-mixing multi-channel audio to configurations with lower numbers of playback channels, e.g. 7.1 -> 5.1
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
    • H04S2400/13—Aspects of volume control, not necessarily automatic, in stereophonic sound systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
    • H04S2400/15—Aspects of sound capture and related signal processing for recording or reproduction
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Multimedia (AREA)
  • Computational Linguistics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Otolaryngology (AREA)
  • General Health & Medical Sciences (AREA)
  • Mathematical Physics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Quality & Reliability (AREA)
  • Stereophonic System (AREA)
  • Display Devices Of Pinball Game Machines (AREA)

Abstract

AnalysisData Final Shift Value 116 First Device 104 Memory 153 Transmitter 110 Input Interface(s) 112 Encoder 114 First Audio Channel 130 First Microphone 146 Second Audio Channel 132 Second Microphone 148 Sound Source 152 Second Device r 118 Decoder ICBWE Spatial Gain Mapping Parameter Generator M 106 N. First Output Channel 126 First Loudspeaker 142 Seco d Loudspeaker 144 Second Output — Channel 128 (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 11 October 2018 (11.10.2018) WIPO I PCT olimion °nolo mol mons mionflom oimIE (10) International Publication Number WO 2018/187082 Al (51) International Patent Classification: G10L 19/008 (2013.01) G1 0L 21/038 (2013.01) (21) International Application Number: PCT/US2018/024500 (22) International Filing Date: 27 March 2018 (27.03.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/482,150 05 April 2017 (05.04.2017) US 15/935,952 26 March 2018 (26.03.2018) 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, Jeffrey G. et al.; Toler Law Group, PC, 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: INTER-CHANNEL BANDWIDTH EXTENSION 100 Stereo Downmix/Upmix Parameter Bitstream 290 Low-Band Mid Channel Bitstream 292 High-Band Mid Channel BWE Bitstream 294 Stereo Downmix/Upmix Parameter Bitstream 290 Low-Band Mid Channel Bitstream 292 High-Band Mid Channel BWE Bitstream 294 1-1 N GC O N GC 1-1 00 O 1-1 N O FIG. 1 (57) : A method includes decoding a low-band mid channel bitstream to generate a low-band mid signal and a low-band mid excitation signal. The method further includes decoding a high-band mid channel bandwidth extension bitstream to generate a synthesized high-band mid signal. The method also includes determining an inter-channel bandwidth extension (ICBWE) gain mapping parameter corresponding to the synthesized high-band mid signal. The ICBWE gain mapping parameter is based on a selected frequen- cy-domain gain parameter that is extracted from a stereo downmix/upmix parameter bitstream. The method further includes performing a gain scaling operation on the synthesized high-band mid signal based on the ICBWE gain mapping parameter to generate a reference high-band channel and a target high-band channel. The method includes outputting a first audio channel and a second audio channel. The first audio channel is based on the reference high-band channel, and the second audio channel is based on target high-band channel. [Continued on next page] WO 2018/187082 Al 0 1OIIIIIII 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))
SG11201907670U 2017-04-05 2018-03-27 Inter-channel bandwidth extension SG11201907670UA (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201762482150P 2017-04-05 2017-04-05
US15/935,952 US10573326B2 (en) 2017-04-05 2018-03-26 Inter-channel bandwidth extension
PCT/US2018/024500 WO2018187082A1 (en) 2017-04-05 2018-03-27 Inter-channel bandwidth extension

Publications (1)

Publication Number Publication Date
SG11201907670UA true SG11201907670UA (en) 2019-10-30

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Country Status (8)

Country Link
US (1) US10573326B2 (en)
EP (1) EP3607549B1 (en)
KR (1) KR102208602B1 (en)
CN (1) CN110447072B (en)
BR (1) BR112019020643A2 (en)
SG (1) SG11201907670UA (en)
TW (1) TWI724290B (en)
WO (1) WO2018187082A1 (en)

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WO2020216459A1 (en) * 2019-04-23 2020-10-29 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus, method or computer program for generating an output downmix representation

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Publication number Publication date
CN110447072A (en) 2019-11-12
BR112019020643A2 (en) 2020-04-28
EP3607549A1 (en) 2020-02-12
KR102208602B1 (en) 2021-01-27
US20180293992A1 (en) 2018-10-11
TW201903754A (en) 2019-01-16
EP3607549B1 (en) 2022-09-28
WO2018187082A1 (en) 2018-10-11
KR20190134641A (en) 2019-12-04
US10573326B2 (en) 2020-02-25
CN110447072B (en) 2020-11-06
TWI724290B (en) 2021-04-11

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