Data processing: speech signal processing – linguistics – language – Audio signal time compression or expansion
Patent
1998-05-27
2000-09-05
Dorvil, Richemond
Data processing: speech signal processing, linguistics, language
Audio signal time compression or expansion
704204, 704500, G10L 2100
Patent
active
061156892
ABSTRACT:
The coder/decoder (codec) system of the present invention includes a coder and a decoder. The coder includes a multi-resolution transform processor, such as a modulated lapped transform (MLT) transform processor, a weighting processor, a uniform quantizer, a masking threshold spectrum processor, an entropy encoder, and a communication device, such as a multiplexor (MUX) for multiplexing (combining) signals received from the above components for transmission over a single medium. The decoder comprises inverse components of the encoder, such as an inverse multi-resolution transform processor, an inverse weighting processor, an inverse uniform quantizer, an inverse masking threshold spectrum processor, an inverse entropy encoder, and an inverse MUX. With these components, the present invention is capable of performing resolution switching, spectral weighting, digital encoding, and parametric modeling.
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DeFrank Edmond A.
Dorvil Richemond
Microsoft Corporation
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