DK3136384T3 - Indretning til at konvertere en lineær forudsigelseskoefficient og fremgangsmåde til at konvertere en lineær forudsigelseskoefficient - Google Patents

Indretning til at konvertere en lineær forudsigelseskoefficient og fremgangsmåde til at konvertere en lineær forudsigelseskoefficient Download PDF

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DK3136384T3
DK3136384T3 DK15783059.7T DK15783059T DK3136384T3 DK 3136384 T3 DK3136384 T3 DK 3136384T3 DK 15783059 T DK15783059 T DK 15783059T DK 3136384 T3 DK3136384 T3 DK 3136384T3
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Denmark
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linear prediction
sampling frequency
power spectrum
coefficients
equation
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DK15783059.7T
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English (en)
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Nobuhiko Naka
Vesa Ruoppila
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Ntt Docomo Inc
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    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
    • G10L19/13—Residual excited linear prediction [RELP]
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/16—Vocoder architecture
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/12—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being prediction coefficients

Claims (2)

1. Indretning til konvertere en lineær forudsigelseskoefficient, der konverterer første lineære forudsigelseskoefficienter beregnet ved en første samplingfrekvens til anden lineære forudsigelseskoefficienter ved en anden samplingfrekvens forskellig fra den første samplingfrekvens, omfattende: et organ til at beregne, ved punkter på den reelle akse af enhedscirklen, ved at anvende LSF-dekomposition og Chebyshev-polynomier, et effektspektrum svarende til de anden lineære forudsigelseskoefficienter ved den anden samplingfrekvens baseret på de første lineære forudsigelseskoefficienter (S002); et organ til at beregne, ved punkter på den reelle akse af enhedscirklen, autokorrelationskoefficienter fra effektspektret (S003); et organ til at konvertere autokorrelationskoefficienterne til de anden lineære forudsigelseskoefficienter ved den anden samplingfrekvens (S004); og hvor effektspektret svarende til de anden lineære forudsigelseskoefficienter opnås ved at beregne et effektspektrum ved at anvende de første lineære forudsigelseskoefficienter ved punkter på den reelle akse svarende til antallet af forskellige frekvenser ved den anden samplingfrekvens.
2. Fremgangsmåde til at konvertere en lineær forudsigelseskoefficient udført afen indretning, der konverterer første lineære forudsigelseskoefficienter beregnet ved en første samplingfrekvens til anden lineære forudsigelseskoefficienter ved en anden samplingfrekvens forskellig fra den første samplingfrekvens, omfattende: et trin til at beregne, ved punkter på den reelle akse af enhedscirklen, ved at anvende LSF-dekomposition og Chebyshev-polynomier, et effektspektrum svarende til de anden lineære forudsigelseskoefficienter ved den anden samplingfrekvens baseret på de første lineære forudsigelseskoefficienter (S002); et trin til at beregne, ved punkter på den reelle akse af enhedscirklen, autokorrelationskoefficienter fra effektspektret (S003); et trin til at konvertere autokorrelationskoefficienter til de anden lineære forudsigelseskoefficienter ved den anden samplingfrekvens (S004); og hvor effektspektret svarende til de anden lineære forudsigelseskoefficienter opnås ved at beregne et effektspektrum ved at anvende de første lineære forudsigelseskoefficienter ved punkter på den reelle akse svarende til antallet af forskellige frekvenser ved den anden samplingfrekvens.
DK15783059.7T 2014-04-25 2015-04-16 Indretning til at konvertere en lineær forudsigelseskoefficient og fremgangsmåde til at konvertere en lineær forudsigelseskoefficient DK3136384T3 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014090781 2014-04-25
PCT/JP2015/061763 WO2015163240A1 (ja) 2014-04-25 2015-04-16 線形予測係数変換装置および線形予測係数変換方法

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US (4) US10163448B2 (da)
EP (3) EP3136384B1 (da)
JP (4) JP6018724B2 (da)
KR (4) KR101772501B1 (da)
CN (2) CN106233381B (da)
AU (4) AU2015251609B2 (da)
BR (1) BR112016024372B1 (da)
CA (4) CA3042070C (da)
DK (1) DK3136384T3 (da)
ES (1) ES2709329T3 (da)
HK (1) HK1226547B (da)
MX (1) MX352479B (da)
MY (1) MY167352A (da)
PH (1) PH12016502076A1 (da)
PL (1) PL3136384T3 (da)
PT (1) PT3136384T (da)
RU (4) RU2639656C1 (da)
TR (1) TR201901328T4 (da)
TW (1) TWI576831B (da)
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CN107945812A (zh) 2018-04-20
TR201901328T4 (tr) 2019-02-21
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PH12016502076B1 (en) 2017-01-09
EP3136384B1 (en) 2019-01-02
CA3042069C (en) 2021-03-02
US20190080706A1 (en) 2019-03-14
MX2016013797A (es) 2016-11-11
AU2019280040A1 (en) 2020-01-16
TWI576831B (zh) 2017-04-01
KR20160129904A (ko) 2016-11-09
KR101772501B1 (ko) 2017-08-29
RU2714390C1 (ru) 2020-02-14
JP6277245B2 (ja) 2018-02-07
US20200302942A1 (en) 2020-09-24
PH12016502076A1 (en) 2017-01-09
RU2673691C1 (ru) 2018-11-29
JPWO2015163240A1 (ja) 2017-04-13
US10714108B2 (en) 2020-07-14
CN106233381B (zh) 2018-01-02
RU2694150C1 (ru) 2019-07-09
JP6936363B2 (ja) 2021-09-15
RU2639656C1 (ru) 2017-12-21
BR112016024372B1 (pt) 2020-11-03
EP3471095A1 (en) 2019-04-17
CA3042069A1 (en) 2015-10-29
CA3042066C (en) 2021-03-02
KR101920297B1 (ko) 2018-11-20
KR20180123742A (ko) 2018-11-19
US11222644B2 (en) 2022-01-11
CN106233381A (zh) 2016-12-14
BR112016024372A2 (pt) 2017-08-15
KR101878292B1 (ko) 2018-07-13
KR101957276B1 (ko) 2019-03-12
KR20170098989A (ko) 2017-08-30
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ES2709329T3 (es) 2019-04-16
JP2017058683A (ja) 2017-03-23
TW201606756A (zh) 2016-02-16
JP2018077524A (ja) 2018-05-17
US10163448B2 (en) 2018-12-25
CA2946824C (en) 2019-06-18
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AU2015251609A1 (en) 2016-11-17
US10714107B2 (en) 2020-07-14
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EP3136384A1 (en) 2017-03-01
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