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RU2018132534A - Устройство и способ декодирования и программа - Google Patents

Устройство и способ декодирования и программа Download PDF

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RU2018132534A
RU2018132534A RU2018132534A RU2018132534A RU2018132534A RU 2018132534 A RU2018132534 A RU 2018132534A RU 2018132534 A RU2018132534 A RU 2018132534A RU 2018132534 A RU2018132534 A RU 2018132534A RU 2018132534 A RU2018132534 A RU 2018132534A
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gain
values
positions
samples
interpolation
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RU2018132534A
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RU2764260C2 (ru
RU2018132534A3 (ru
Inventor
Юки ЯМАМОТО
Тору ТИНЕН
Хироюки ХОНМА
Руню СИ
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Сони Корпорейшн
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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • 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
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G11/00—Limiting amplitude; Limiting rate of change of amplitude
    • H03G11/008—Limiting amplitude; Limiting rate of change of amplitude of digital or coded signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/002—Volume compression or expansion in amplifiers in untuned or low-frequency amplifiers, e.g. audio amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/007—Volume compression or expansion in amplifiers of digital or coded signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
    • H03G9/005—Combinations of two or more types of control, e.g. gain control and tone control of digital or coded signals
    • 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
    • G10L2019/0001—Codebooks
    • G10L2019/0012—Smoothing of parameters of the decoder interpolation
    • 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
    • G10L21/0316—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude
    • G10L21/0324—Details of processing therefor
    • G10L21/034—Automatic adjustment
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Acoustics & Sound (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Stereophonic System (AREA)

Claims (18)

1. Устройство декодирования, содержащее:
блок считывания коэффициентов усиления, выполненный с возможностью считывания значений коэффициентов усиления по меньшей мере в двух позициях выборок коэффициентов усиления сигнала во временной последовательности;
блок считывания информации интерполяции, выполненный с возможностью считывания информации интерполяции, показывающей, получено ли значение коэффициента усиления в каждой позиции выборки сигнала во временной последовательности посредством линейной интерполяции или путем нелинейной интерполяции; и
блок обработки интерполяции, выполненный с возможностью получения значения коэффициента усиления в каждой позиции выборки, расположенной между двумя позициями выборок коэффициентов усиления сигнала во временной последовательности на основании значений коэффициентов усиления в позициях выборок коэффициентов усиления, посредством линейной интерполяции или нелинейной интерполяции согласно информации интерполяции; при этом
блок считывания коэффициентов усиления, дополнительно выполнен с возможностью считывания значений наклона графика коэффициентов усиления, указывающих наклон графика значений коэффициентов усиления в позиции выборки коэффициента усиления, а
блок обработки интерполяции, дополнительно, выполнен с возможностью получения, когда значение коэффициента получено посредством нелинейной интерполяции, значение коэффициента усиления в каждой позиции выборки, расположенной между двумя позициями выборок коэффициентов усиления, на основании значений коэффициентов усиления и значений наклона графика коэффициентов усиления в позициях выборок коэффициентов усиления.
2. Способ декодирования, содержащий этапы, на которых:
считывают значения коэффициентов усиления по меньшей мере в двух позициях выборок коэффициентов усиления сигнала во временной последовательности;
считывают информацию интерполяции, показывающую, получено ли значение коэффициента усиления в каждой позиции выборки сигнала во временной последовательности посредством линейной интерполяции или путем нелинейной интерполяции; и
получают значения коэффициента усиления в каждой позиции выборки, расположенной между двумя позициями выборок коэффициентов усиления сигнала во временной последовательности на основании значений коэффициентов усиления в позициях выборок коэффициентов усиления, посредством линейной интерполяции или нелинейной интерполяции согласно информации интерполяции; при этом
этап считывания значений коэффициентов усиления содержит подэтап, на котором считывают значения наклона графика коэффициентов усиления, указывающие наклон графика значений коэффициентов усиления в позиции выборки коэффициента усиления, а
этап получения, когда значение коэффициента получено посредством нелинейной интерполяции, значения коэффициента усиления в каждой позиции выборки, расположенной между двумя позициями выборок коэффициентов усиления, осуществляют на основании значений коэффициентов усиления и значений наклона графика коэффициентов усиления в позициях выборок коэффициентов усиления.
3. Носитель информации, хранящий программу, вызывающую выполнение компьютером процесса, включающего в себя этапы, на которых:
считывают значения коэффициентов усиления по меньшей мере в двух позициях выборок коэффициентов усиления сигнала во временной последовательности;
считывают информацию интерполяции, показывающую, получено ли значение коэффициента усиления в каждой позиции выборки сигнала во временной последовательности посредством линейной интерполяции или путем нелинейной интерполяции; и
получают значения коэффициента усиления в каждой позиции выборки, расположенной между двумя позициями выборок коэффициентов усиления сигнала во временной последовательности на основании значений коэффициентов усиления в позициях выборок коэффициентов усиления, посредством линейной интерполяции или нелинейной интерполяции согласно информации интерполяции; при этом
этап считывания значений коэффициентов усиления содержит подэтап, на котором считывают значения наклона графика коэффициентов усиления, указывающие наклон графика значений коэффициентов усиления в позиции выборки коэффициента усиления, а
этап получения, когда значение коэффициента получено посредством нелинейной интерполяции, значения коэффициента усиления в каждой позиции выборки, расположенной между двумя позициями выборок коэффициентов усиления, осуществляют на основании значений коэффициентов усиления и значений наклона графика коэффициентов усиления в позициях выборок коэффициентов усиления.
RU2018132534A 2013-12-27 2014-12-12 Устройство и способ декодирования RU2764260C2 (ru)

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