| 摘要 |
A computer system for generating delay-based audio effects in a wavetable music synthesis system in which wavetable data is stored in system memory. The system comprises a system memory wherein wavetable data is stored, an I/O bus coupled to the system memory and a system audio device. The system audio device comprises an I/O bus interface coupled to the I/O bus, a synthesizer, a plurality of buffers coupled to the I/O bus interface and to the synthesizer for buffering the wavetable data from the system memory, a plurality of write-back buffers coupled to the I/O bus interface and the synthesizer for effects processing, and a buffer manager coupled to the I/O bus interface, the synthesizer, the plurality of buffers, and the plurality of write-back buffers. As requested by the synthesizer, the buffer manager manages transfers of wavetable data from a first location in system memory to the synthesizer, from the synthesizer to the write-back buffers, and from the write-back buffers to a second location in system memory.
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