Data processing: speech signal processing – linguistics – language – Speech signal processing
Patent
1997-03-20
1999-07-13
Hudspeth, David R.
Data processing: speech signal processing, linguistics, language
Speech signal processing
704229, 704230, G10L 302
Patent
active
059240601
ABSTRACT:
A digital coding process for the transmission and/or storage of acoustical signals and, in particular, of musical signals, in which N scanning values of the acoustical signals are transformed into M spectral coefficients. The M spectral coefficients are quantized in the first step. Following encoding, the number of bits required for representation is checked utilizing an optimum encoder. If the number of bits is greater than the prescribed number of bits, quantization and encoding is repeated in further steps until the number of bits required for representation does not exceed the prescribed number of bits, whereby the required quantization level is transmitted or stored in addition to the data bits. Transmission and/or storage of acoustical signals and, in particular, of musical signals is accordingly possible without subjective diminishment of quality of the musical signals while reducing the data rates by factor 4 to 6.
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Hudspeth David R.
Opsasnick Michael N.
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