Appeal No. 1999-1793
Application 08/161,798
connected to each signal buffer 6(p) to determine for each block
stored having block number m a characteristic parameter G(p;m)
representative of the signal level of the block (col. 6,
lines 17-23). The signal level can be represented by the average
value of the amplitude or the power of the signal samples of a block,
and also by the peak value of the amplitude of the signal samples in
a block (col. 6, lines 29-33). The set of "characteristic parameters
G(p;m)" in Veldhuis is the "representative of each frequency-unit
obtained." Thus, Veldhuis discloses "a step for obtaining a
representative of each frequency-unit obtained."
Claim 5 recites "a step for counting a number of available
frequency-units by using the representative, based on psychoacoustic
criteria." For the upper group of subbands (13#p#26) in Veldhuis,
the number of quantizing bits per signal sample B(p;m) is determined
by the set of all characteristic parameters G(p;m) (col. 10,
lines 8-18). As previously noted,
the "at least one frequency interval" in the first step of claim 5
reads on the frequency interval corresponding to the upper subbands
(13#p#26) in Veldhuis, so it is proper to focus on these subbands
(frequency-units). Parameter G(p;m) is compared to the threshold
T(p) for the subband of band number p and a binary comparator signal
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