Speech signal processing apparatus for amplifying an input signal based upon consonant features of the signal
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United States of America Patent
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Dec 10, 1996
Grant Date -
N/A
app pub date -
Apr 26, 1993
filing date -
Apr 28, 1992
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An apparatus for processing a speech signal includes a coefficient calculating circuit for receiving an input signal, and for generating a first value for suppressing a change of level of the input signal; a first delay circuit for receiving the input signal, and for delaying the input signal by a predetermined time; a feature extracting circuit for receiving the input signal, and for deriving a feature value representing a feature of consonants from the input signal; a coefficient control circuit for receiving the first value from the coefficient calculating circuit and the feature value from the feature extracting circuit, and for changing the amplitude and the duration of the first value depending on the feature value, so as to generate a second value; a multiplying circuit for receiving the delayed input signal from the first delay circuit and the second value from the coefficient control circuit, and for multiplying the delayed input signal by the second value.
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