IN2014DN07433A - - Google Patents

Info

Publication number
IN2014DN07433A
IN2014DN07433A IN7433DEN2014A IN2014DN07433A IN 2014DN07433 A IN2014DN07433 A IN 2014DN07433A IN 7433DEN2014 A IN7433DEN2014 A IN 7433DEN2014A IN 2014DN07433 A IN2014DN07433 A IN 2014DN07433A
Authority
IN
India
Prior art keywords
encode
encoder
peak
peak regions
frequency set
Prior art date
Application number
Inventor
Volodya Grancharov
Tomas Toftgård
Sebastian Näslund
Harald Pobloth
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of IN2014DN07433A publication Critical patent/IN2014DN07433A/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
    • G10L19/002—Dynamic bit allocation
    • 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
    • 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
    • G10L19/0212—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 orthogonal transformation
    • 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
    • G10L19/038—Vector quantisation, e.g. TwinVQ audio

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

An encoder (20) for encoding frequency transform coefficients (Y(k)) of a harmonic audio signal include the following elements: A peak locator (22) configured to locate spectral peaks having magnitudes exceeding a predetermined frequency dependent threshold. A peak region encoder (24) configured to encode peak regions including and surrounding the located peaks. A low frequency set encoder (26) configured to encode at least one low frequency set of coefficients outside the peak regions and below a crossover frequency that depends on the number of bits used to encode the peak regions. A noise floor gain encoder (28) configured to encode a noise floor gain of at least one high frequency set of not yet encoded coefficients outside the peak regions.
IN7433DEN2014 2012-03-29 2012-10-30 IN2014DN07433A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261617216P 2012-03-29 2012-03-29
PCT/SE2012/051177 WO2013147666A1 (en) 2012-03-29 2012-10-30 Transform encoding/decoding of harmonic audio signals

Publications (1)

Publication Number Publication Date
IN2014DN07433A true IN2014DN07433A (en) 2015-04-24

Family

ID=47221519

Family Applications (1)

Application Number Title Priority Date Filing Date
IN7433DEN2014 IN2014DN07433A (en) 2012-03-29 2012-10-30

Country Status (13)

Country Link
US (5) US9437204B2 (en)
EP (2) EP2831874B1 (en)
KR (3) KR102136038B1 (en)
CN (2) CN104254885B (en)
DK (1) DK2831874T3 (en)
ES (2) ES2703873T3 (en)
HU (1) HUE033069T2 (en)
IN (1) IN2014DN07433A (en)
PL (1) PL3220390T3 (en)
PT (1) PT3220390T (en)
RU (3) RU2637994C1 (en)
TR (1) TR201815245T4 (en)
WO (1) WO2013147666A1 (en)

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ES3000058T3 (en) * 2012-03-29 2025-02-27 Ericsson Telefon Ab L M Vector quantizer
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US9741349B2 (en) * 2014-03-14 2017-08-22 Telefonaktiebolaget L M Ericsson (Publ) Audio coding method and apparatus
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WO2016142002A1 (en) 2015-03-09 2016-09-15 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Audio encoder, audio decoder, method for encoding an audio signal and method for decoding an encoded audio signal
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US10984808B2 (en) * 2019-07-09 2021-04-20 Blackberry Limited Method for multi-stage compression in sub-band processing
CN113192517B (en) * 2020-01-13 2024-04-26 华为技术有限公司 Audio coding and decoding method and audio coding and decoding device

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Also Published As

Publication number Publication date
EP3220390B1 (en) 2018-09-26
US10566003B2 (en) 2020-02-18
ES2635422T3 (en) 2017-10-03
PT3220390T (en) 2018-11-06
US9437204B2 (en) 2016-09-06
EP3220390A1 (en) 2017-09-20
KR20190084131A (en) 2019-07-15
CN104254885A (en) 2014-12-31
KR20140130248A (en) 2014-11-07
RU2637994C1 (en) 2017-12-08
TR201815245T4 (en) 2018-11-21
KR102136038B1 (en) 2020-07-20
RU2744477C2 (en) 2021-03-10
RU2014143518A (en) 2016-05-20
US20220139408A1 (en) 2022-05-05
RU2017139868A3 (en) 2021-01-22
US11264041B2 (en) 2022-03-01
DK2831874T3 (en) 2017-06-26
EP2831874B1 (en) 2017-05-03
US12027175B2 (en) 2024-07-02
US20160343381A1 (en) 2016-11-24
CN107591157A (en) 2018-01-16
US20150046171A1 (en) 2015-02-12
ES2703873T3 (en) 2019-03-12
RU2017139868A (en) 2019-05-16
US20200143818A1 (en) 2020-05-07
KR20190075154A (en) 2019-06-28
CN104254885B (en) 2017-10-13
KR102123770B1 (en) 2020-06-16
HUE033069T2 (en) 2017-11-28
CN107591157B (en) 2020-12-22
US20240321283A1 (en) 2024-09-26
RU2611017C2 (en) 2017-02-17
WO2013147666A1 (en) 2013-10-03
EP2831874A1 (en) 2015-02-04
PL3220390T3 (en) 2019-02-28

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