Creative SB0350 Programming Manual page 110

D1h
Output
D1h
Remarks
The speaker here refers to the connection of the digitized sound output to the
amplifier input. It has no effect on the FM music.
The DSP takes a maximum of 112 milliseconds to complete this command.
Some important notes:
1. On version 1.xx, the DSP will pause the DMA transfer after executing this
command.
2. On DSP version 4.xx, this command has no practical effect on the output signal.
However, it will still set to 'On' the DSP's internal speaker On/Off flag so that
command D8h, Get speaker status, will return the correct status.
See Also
command D3h, Turn off speaker
command D8h, Get speaker status
Available 1.xx
Turn on speaker
2.00 2.01+ 3.xx
DSP Commands
4.xx
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