UA111310C2 - FORECASTING ON BASIC MODELS IN CRITICAL DISCRETION FILTERS - Google Patents

FORECASTING ON BASIC MODELS IN CRITICAL DISCRETION FILTERS

Info

Publication number
UA111310C2
UA111310C2 UAA201506710A UAA201506710A UA111310C2 UA 111310 C2 UA111310 C2 UA 111310C2 UA A201506710 A UAA201506710 A UA A201506710A UA A201506710 A UAA201506710 A UA A201506710A UA 111310 C2 UA111310 C2 UA 111310C2
Authority
UA
Ukraine
Prior art keywords
subband
discrete value
filters
signal
model
Prior art date
Application number
UAA201506710A
Other languages
Ukrainian (uk)
Inventor
Ларс Віллемоес
Original Assignee
Долбі Інтернешнл Аб
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
Priority claimed from PCT/EP2014/050139 external-priority patent/WO2014108393A1/en
Application filed by Долбі Інтернешнл Аб filed Critical Долбі Інтернешнл Аб
Publication of UA111310C2 publication Critical patent/UA111310C2/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/30—Circuit design
    • G06F30/32—Circuit design at the digital level
    • G06F30/327—Logic synthesis; Behaviour synthesis, e.g. mapping logic, HDL to netlist, high-level language to RTL or netlist
    • 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
    • G10L19/02—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
    • G10L19/0208—Subband vocoders
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/30—Circuit design
    • 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
    • G10L19/005—Correction of errors induced by the transmission channel, if related to the coding algorithm
    • 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
    • G10L19/02—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 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
    • G10L19/02—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 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
    • G10L19/26—Pre-filtering or post-filtering
    • G10L19/265—Pre-filtering, e.g. high frequency emphasis prior to encoding

Abstract

Винахід належить до систем кодування джерела звуку. Зокрема, цей документ належить до систем кодування джерела звуку, що використовують лінійне прогнозування в комбінації з набором фільтрів. Описано спосіб оцінки першого дискретного значення (615) сигналу першої підсмуги в першій підсмузі звукового сигналу. Сигнал першої підсмуги звукового сигналу визначають із застосуванням набору (612) аналізуючих фільтрів, що містить ряд аналізуючих фільтрів, які створюють зі звукового сигналу ряд сигналів підсмуг, відповідно, у ряді підсмуг. Спосіб включає визначення параметра (613) моделі для моделі сигналу; визначення коефіцієнта прогнозування, що підлягає застосуванню до попереднього дискретного значення (614) декодованих сигналів першої підсмуги, отриманих із сигналу першої підсмуги, на основі моделі сигналу, на основі параметра (613) моделі та на основі набору (612) аналізуючих фільтрів; при цьому часовий інтервал попереднього дискретного значення (614) передує часовому інтервалу першого дискретного значення (615); і визначення оцінки першого дискретного значення (615) шляхом застосування коефіцієнта прогнозування до попереднього дискретного значення (614).The invention relates to audio source encoding systems. In particular, this document relates to audio source coding systems that use linear prediction in combination with a set of filters. The method of estimating the first discrete value (615) of the first subband signal in the first subband of the audio signal is described. The first audio signal subband is determined using a set (612) of analyzing filters, comprising a series of analyzing filters that generate a number of subband signals from the audio signal, respectively, in a number of subband. The method includes determining the model parameter (613) for the signal model; determining the prediction coefficient to be applied to the previous discrete value (614) of the first subband decoded signals obtained from the first subband signal based on the model signal, based on the model parameter (613), and based on a set (612) of the analyzing filters; the time interval of the previous discrete value (614) precedes the time interval of the first discrete value (615); and determining the estimate of the first discrete value (615) by applying the prediction coefficient to the previous discrete value (614).

UAA201506710A 2013-01-08 2014-07-01 FORECASTING ON BASIC MODELS IN CRITICAL DISCRETION FILTERS UA111310C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361750052P 2013-01-08 2013-01-08
PCT/EP2014/050139 WO2014108393A1 (en) 2013-01-08 2014-01-07 Model based prediction in a critically sampled filterbank

Publications (1)

Publication Number Publication Date
UA111310C2 true UA111310C2 (en) 2016-04-11

Family

ID=55862046

Family Applications (1)

Application Number Title Priority Date Filing Date
UAA201506710A UA111310C2 (en) 2013-01-08 2014-07-01 FORECASTING ON BASIC MODELS IN CRITICAL DISCRETION FILTERS

Country Status (1)

Country Link
UA (1) UA111310C2 (en)

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