Digital Signal Processing Reference
In-Depth Information
subband, only the number of quantization steps can be reduced. In another
subband, we find a signal at about 10 kHz with a level below the masking
threshold. This means that this subband is fully masked by signals of
neighbouring subbands and can therefore be suppressed completely.
Fig. 8.11.
Irrelevance reduction utilizing masking effects
Fig. 8.12.
MPEG-2 layer I, II data structure
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