Appeal No. 1998-2664
Application No. 08/426,426
Representative claim 1 is reproduced below:
1. A filter comprising:
(a) an input for receiving frames of sampled speech signals;
(b) an attenuation filter coupled to said input, wherein for each of said
frames said attenuation filter uses a noise-free speech power
spectrum estimate based on line spectral frequencies (LSFs) in a
codebook; and
(c) an output coupled to said attenuation filter for emitting filtered
frames.
The following reference is relied on by the examiner:
Deller, Jr. et al., Discrete-Time Processing of Speech Signals, published by
Prentice Hall, Inc. (NJ) (1987), pp. 331-333, 517, 521, 523, 526.
Claims 1, 2 and 6 through 10 stand rejected under 35 U.S.C. § 103. As evidence
of obviousness, the examiner relies upon Deller alone.
Rather than repeat the positions of the appellants and the examiner, reference is
made to the brief and the answer for the respective details thereof.
OPINION
For the reasons set forth by the examiner in the final rejection and the answer, we
sustain the rejection of claims 1, 2, 6 and 10, but reverse the rejection for claims 7 through
9.
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