Data processing: speech signal processing – linguistics – language – Speech signal processing – Recognition
Reexamination Certificate
2007-04-03
2007-04-03
Hudspeth, David (Department: 2626)
Data processing: speech signal processing, linguistics, language
Speech signal processing
Recognition
C704S219000, C704S262000
Reexamination Certificate
active
10306367
ABSTRACT:
A method identifies a codeword to represent a vector derived from an audio signal by applying the vector to first and second decision trees. The first decision tree is associated with a first type of audio sound and produces a first codeword. The second decision tree is associated with a second type of audio sound and produces a second codeword. One of the first and second codewords is then selected as the codeword for the vector. In further embodiments, the vector describes the spectral content of the audio signal and a linear prediction value is generated for the vector. The difference between the linear prediction value and the vector is used to identify the codeword.
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Acero Alejandro
Boulis Constantinos
Droppo James G.
Hudspeth David
Jackson Jakieda R.
Magee Theodore M.
Westman Champlin & Kelly P.A.
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