| 摘要 |
A system (100) performs audio effects processing on a subband-by-subband basis. The system has a set of prototype subband effects filters, the set including echo, flange, chorus, and reverberation effects filters. A subband filter customized procedure allows a designer to build customized versions of the prototype subband effects filters (128-1 to 128-32). One or more of the customized subband effects filters are applied to one or more of the subbands (116-1 to 116-32). A synthesis filter bank (114) decompresses and decodes the compressed subband data to produce a decompressed decoded output signal with the audio effects incorporated in it. The system uses less memory and computational resources by applying the customized subband effects filters to less than a full set of subbands without suffering any psychoacoustical loss. Each subband is processed separately and independent of the other subbands.
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