h6. [[SoundControl]] h6(. » [[SoundControl SWI Calls|SWI Calls]] h6((. » SoundCtrl_SetMix h2. SoundCtrl_SetMix h5. (SWI &50001) |_<^{width:4em}. Entry | | |<^. R0 |<^. Mixer system | |<^. R1 |<^. [[SoundControl Categories|Category]] | |<^. R2 |<^. Index within category | |<^. R3 |<^. 1 = mute, 0 = unmute | |<^. R4 |<^. Gain in units of 1/16dB | |_<^{width:4em}. Exit | | |<^. - |<^. All registers preserved | h4. Use This SWI is used to alter the volume settings of a specific mixer channel. h4. Notes R0 can either be a pointer to a null/control-terminated audio controller device ID string (as returned by [[Sound_EnumerateControllers]] or 0 (NULL) to refer to the mixer for the current default controller. Gain is specified in units of 1/16dB, so for example -16 corresponds to -1dB. h4. See also * [[*MixVolume]] * [[SoundCtrl_ExamineMixer]] * [[SoundCtrl_GetMix]] * [[Sound_EnumerateControllers]]