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Bayer, 2005 - Google Patents

Mixing perceptual coded audio streams

Bayer, 2005

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Document ID
840934777278527873
Author
Bayer S
Publication year

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Snippet

Perceptual audio coders based on the Modulated Discrete Cosine Transform (MDCT) and utilizing psychoacoustically based noise shaping for irrelevancy removal are widely used today. After giving an overview of algorithms of perceptual audio coders and current coding …
Continue reading at iem.kug.ac.at (PDF) (other versions)

Classifications

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    • G10L19/04—Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signal, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/16—Vocoder architecture
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    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
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    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
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    • G10L21/0202—Applications
    • G10L21/0205—Enhancement of intelligibility of clean or coded speech
    • G—PHYSICS
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    • G—PHYSICS
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    • G—PHYSICS
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    • 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
    • G10L25/18—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 spectral information of each sub-band

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