Appeal No. 96-0338
Application 08/095,179
As a starting point the subject matter of independent
claims 1 and 22 on appeal is derived from a showing in
appellants' Figure 2 within the large dashed block element
which in turn feeds the voice recognizer circuit element 10.
In an analogous manner, Kroschel's Figure 1 at the bottom of
page 82 of that reference shows conceptually his noise
reduction system feeding a speech recognition system. The
examiner's reliance upon the specific types of cepstral coding
features discussed at column 1 of page 83 relate only to the
speech recognition block in Kroschel's Figure 1 at the bottom
of page 82 as expressed in the topic heading at the top of
column 1 at page 83.
On the other hand, the specific noise reduction
techniques taught in this reference beginning at the bottom of
column 1 at page 84 of this reference conceptually relate to
the noise reduction block in Figure 1 at the bottom of page 82
of this reference. Column 2 of page 84 relates to a specific
approach, apparently the only approach actually taught in
Kroschel, to reducing noise within an incoming signal which
approach is based upon the average of the noise power spectrum
calculated by FFT in speech pauses according to a particular
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