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| CD-DA Playback Rate [message #694] | Sun, 11 February 2007 16:13 | |||
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The CD-DA playback rate can be set by issuing a "mode select(0x15)" command to the CD unit, and then sending 7 bytes, with the mode select header bytes set to all 0, and the vendor unique parameter bytes set to "2b 01 speed", example: 00 00 00 00 2B 01 03 in this example, "speed" is set to "03". Formula: "speed" is 8-bit signed two's complement integer. rate = 44100 + 44100 * speed / 100 Only values of speed for -10 <= speed <= 10 have been tested by me personally(and they are used by the BIOS for the CD-DA playback interface tempo/speed adjustment). Lower or higher values may not work! [Updated on: Sun, 11 February 2007 16:14] | ||||
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