Data processing: speech signal processing – linguistics – language – Speech signal processing – For storage or transmission
Patent
1998-03-04
2000-05-16
Hudspeth, David R.
Data processing: speech signal processing, linguistics, language
Speech signal processing
For storage or transmission
704206, 704227, 704219, 704230, G10L 1912
Patent
active
060649542
ABSTRACT:
Apparatus is disclosed for digitally encoding an input audio signal, for storage or transmission, comprising: a pitch detector for determining at least a dominant time-domain periodicity in the input signal; a generator for generating a prediction signal based on the dominant time domain periodicity of the input signal; a first discrete frequency domain transform generator for generating a frequency domain representation of the input signal; a second discrete frequency domain transform generator for generating a frequency domain representation of the prediction signal; a subtractor to subtract at least a portion of the frequency domain representation of the prediction signal from the frequency domain representation of the input signal to generate an error signal; and a generator to generate an output signal from the error signal and parameters defining the prediction signal. A corresponding decoder is also described.
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Cohen Gilad
Cohen Yossef
Hoffman Doron
Krupnik Hagai
Satt Aharon
Chawan Vijay B
Hudspeth David R.
International Business Machines Corp.
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