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IN2014CN04457A - - Google Patents

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Publication number
IN2014CN04457A
IN2014CN04457A IN4457CHN2014A IN2014CN04457A IN 2014CN04457 A IN2014CN04457 A IN 2014CN04457A IN 4457CHN2014 A IN4457CHN2014 A IN 4457CHN2014A IN 2014CN04457 A IN2014CN04457 A IN 2014CN04457A
Authority
IN
India
Prior art keywords
audio data
low frequency
compensation
frequency band
frequency bands
Prior art date
Application number
Inventor
Arijit Biswas
Vinay Melkote
Michael Schug
Grant A Davidson
Mark S Vinton
Original Assignee
Dolby Lab Licensing Corp
Dolby Int Ab
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 Dolby Lab Licensing Corp, Dolby Int Ab filed Critical Dolby Lab Licensing Corp
Publication of IN2014CN04457A publication Critical patent/IN2014CN04457A/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
    • G10L19/02—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
    • G10L19/028—Noise substitution, i.e. substituting non-tonal spectral components by noisy source
    • 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
    • G10L19/032—Quantisation or dequantisation of spectral components
    • 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
    • G10L19/26—Pre-filtering or post-filtering
    • G10L19/265—Pre-filtering, e.g. high frequency emphasis prior to encoding
    • 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
    • G10L19/0204—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 using subband decomposition

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Computational Linguistics (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

A method for determining mantissa bit allocation of audio data values of frequency domain audio data to be encoded. The allocation method includes a step of determining masking values for the audio data values including by performing adaptive low frequency compensation on the audio data of each frequency band of a set of low frequency bands of the audio data. The adaptive low frequency compensation includes steps of: performing tonality detection on the audio data to generate compensation control data indicative of whether each frequency band in the set of low frequency bands has prominent tonal content; and performing low frequency compensation on the audio data in each frequency band in the set of low frequency bands having prominent tonal content as indicated by the compensation control data but not performing low frequency compensation on the audio data in any other frequency band in the set of low frequency bands.
IN4457CHN2014 2012-01-09 2012-09-25 IN2014CN04457A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201261584478P 2012-01-09 2012-01-09
US13/588,890 US8527264B2 (en) 2012-01-09 2012-08-17 Method and system for encoding audio data with adaptive low frequency compensation
PCT/US2012/057132 WO2013106098A1 (en) 2012-01-09 2012-09-25 Method and system for encoding audio data with adaptive low frequency compensation

Publications (1)

Publication Number Publication Date
IN2014CN04457A true IN2014CN04457A (en) 2015-09-04

Family

ID=48744528

Family Applications (1)

Application Number Title Priority Date Filing Date
IN4457CHN2014 IN2014CN04457A (en) 2012-01-09 2012-09-25

Country Status (19)

Country Link
US (2) US8527264B2 (en)
EP (1) EP2803067B1 (en)
JP (2) JP5755379B2 (en)
KR (1) KR101621704B1 (en)
AR (1) AR088007A1 (en)
AU (1) AU2012364749B2 (en)
BR (1) BR112014016847B1 (en)
CA (1) CA2858663C (en)
CL (1) CL2014001805A1 (en)
HK (1) HK1201976A1 (en)
IL (1) IL233029A0 (en)
IN (1) IN2014CN04457A (en)
MX (1) MX335999B (en)
MY (1) MY187728A (en)
RU (1) RU2583717C1 (en)
SG (1) SG11201402983UA (en)
TW (1) TWI470621B (en)
UA (1) UA110291C2 (en)
WO (1) WO2013106098A1 (en)

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US8697975B2 (en) * 2008-07-29 2014-04-15 Yamaha Corporation Musical performance-related information output device, system including musical performance-related information output device, and electronic musical instrument
EP2770751B1 (en) * 2008-07-30 2017-09-06 Yamaha Corporation Audio signal processing device, audio signal processing system, and audio signal processing method
JP5782677B2 (en) 2010-03-31 2015-09-24 ヤマハ株式会社 Content reproduction apparatus and audio processing system
EP2573761B1 (en) 2011-09-25 2018-02-14 Yamaha Corporation Displaying content in relation to music reproduction by means of information processing apparatus independent of music reproduction apparatus
JP5494677B2 (en) 2012-01-06 2014-05-21 ヤマハ株式会社 Performance device and performance program
BR112015018522B1 (en) 2013-02-14 2021-12-14 Dolby Laboratories Licensing Corporation METHOD, DEVICE AND NON-TRANSITORY MEDIA WHICH HAS A METHOD STORED IN IT TO CONTROL COHERENCE BETWEEN AUDIO SIGNAL CHANNELS WITH UPMIX.
TWI618050B (en) 2013-02-14 2018-03-11 杜比實驗室特許公司 Method and apparatus for signal decorrelation in an audio processing system
TWI618051B (en) 2013-02-14 2018-03-11 杜比實驗室特許公司 Audio signal processing method and apparatus for audio signal enhancement using estimated spatial parameters
WO2014126688A1 (en) 2013-02-14 2014-08-21 Dolby Laboratories Licensing Corporation Methods for audio signal transient detection and decorrelation control
EP2980792A1 (en) 2014-07-28 2016-02-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for generating an enhanced signal using independent noise-filling
JP6492915B2 (en) * 2015-04-15 2019-04-03 富士通株式会社 Encoding apparatus, encoding method, and program
EP3288031A1 (en) * 2016-08-23 2018-02-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for encoding an audio signal using a compensation value
EP3649640A1 (en) * 2017-07-03 2020-05-13 Dolby International AB Low complexity dense transient events detection and coding
CN108616277B (en) * 2018-05-22 2021-07-13 电子科技大学 Rapid correction method for multi-channel frequency domain compensation

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US4817155A (en) * 1983-05-05 1989-03-28 Briar Herman P Method and apparatus for speech analysis
US5632005A (en) 1991-01-08 1997-05-20 Ray Milton Dolby Encoder/decoder for multidimensional sound fields
AU653582B2 (en) 1991-01-08 1994-10-06 Dolby Laboratories Licensing Corporation Encoder/decoder for multidimensional sound fields
US5581653A (en) * 1993-08-31 1996-12-03 Dolby Laboratories Licensing Corporation Low bit-rate high-resolution spectral envelope coding for audio encoder and decoder
US5727119A (en) 1995-03-27 1998-03-10 Dolby Laboratories Licensing Corporation Method and apparatus for efficient implementation of single-sideband filter banks providing accurate measures of spectral magnitude and phase
JPH10261964A (en) * 1997-03-19 1998-09-29 Sanyo Electric Co Ltd Information signal processing unit
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US6775587B1 (en) * 1999-10-30 2004-08-10 Stmicroelectronics Asia Pacific Pte Ltd. Method of encoding frequency coefficients in an AC-3 encoder
DE60114638T2 (en) * 2000-08-16 2006-07-20 Dolby Laboratories Licensing Corp., San Francisco MODULATION OF ONE OR MORE PARAMETERS IN A PERCEPTIONAL AUDIO OR VIDEO CODING SYSTEM IN RESPONSE TO ADDITIONAL INFORMATION
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US7110941B2 (en) * 2002-03-28 2006-09-19 Microsoft Corporation System and method for embedded audio coding with implicit auditory masking
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Also Published As

Publication number Publication date
EP2803067A1 (en) 2014-11-19
AR088007A1 (en) 2014-04-30
BR112014016847A2 (en) 2017-06-13
AU2012364749B2 (en) 2015-08-13
TW201329961A (en) 2013-07-16
UA110291C2 (en) 2015-12-10
JP5755379B2 (en) 2015-07-29
SG11201402983UA (en) 2014-09-26
CL2014001805A1 (en) 2015-02-27
KR101621704B1 (en) 2016-05-17
RU2583717C1 (en) 2016-05-10
WO2013106098A1 (en) 2013-07-18
JP2015187743A (en) 2015-10-29
MX2014007400A (en) 2015-03-05
US20140324441A1 (en) 2014-10-30
IL233029A0 (en) 2014-07-31
JP6093801B2 (en) 2017-03-08
AU2012364749A1 (en) 2014-07-03
HK1201976A1 (en) 2015-09-11
MY187728A (en) 2021-10-14
JP2015504179A (en) 2015-02-05
CA2858663C (en) 2017-03-14
EP2803067B1 (en) 2017-04-05
BR112014016847B1 (en) 2020-12-15
CA2858663A1 (en) 2013-07-18
US20130179175A1 (en) 2013-07-11
CN104040623A (en) 2014-09-10
TWI470621B (en) 2015-01-21
MX335999B (en) 2016-01-07
KR20140104470A (en) 2014-08-28
BR112014016847A8 (en) 2017-07-04
US9275649B2 (en) 2016-03-01
US8527264B2 (en) 2013-09-03

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