Appeal No. 96-0338
Application 08/095,179
DECISION ON APPEAL
Appellants have appealed to the Board from the examiner's
final rejection of claims 1, 2, 4, 5, 13, 14, 17 through 24
and 26 through 28, which constitute all the claims remaining
in the application.
Representative claim 1 is reproduced below:
1. A signal processing device comprising:
frequency analysis means for performing frequency
analysis for an input signal which can contain an information
signal and noise, and providing a frequency-analyzed signal;
signal detection means for detecting from said
frequency-analyzed signal, a first time period during which an
input signal received by said frequency analysis means
contains both said information signal and noise and a second
time period during which said input signal contains only
noise, said signal detection means including
cepstrum analysis means for performing cepstrum
analysis on said frequency-analyzed signal to obtain a
cepstrum peak; and
signal detecting means for detecting said first time
period based upon a cepstrum analysis by said cepstrum
analysis means;
noise prediction means which receives said
frequency-analyzed signal for predicting noise in an input
2
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Last modified: November 3, 2007