## Physical Device Driver Reference

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### CDROMAUDIO_SETCHANNELCTRL (40h) - Set Audio Channel Control

Category:
IOCTL_CDROMAUDIO (81h)
Function:
CDROMAUDIO_SETCHANNELCTRL (40h)
Description:
Set Audio Channel Control

Select an item:

    Description
    Parameter Packet Format
    Data Packet Format
    Returns
    Remarks

This function sets the playback control of the audio channels. This includes assigning input channels to output channels and controlling the volume of each output channel. This function is performed regardless of whether the drive is already playing.