Paul D. DeRocco wrote: > ... But the analog output has a post-DAC volume control which I'd like to > control from my synth app. > > Can anyone tell me how to do this? Find out the name and the valid range of that mixer control, then just execute: system("amixer cset name='Master Playback Volume' 42"); or access the control directly like this: #include <stdio.h> #include <stdlib.h> #include <alsa/asoundlib.h> static void check(int err, const char *f) { if (err < 0) { fprintf(stderr, "%s failed: %s\n", f, snd_strerror(err)); exit(EXIT_FAILURE); } } #define CHECK(f) check(f, #f) int main() { snd_ctl_t *ctl; snd_ctl_elem_value_t *value; CHECK(snd_ctl_open(&ctl, "default", 0)); snd_ctl_elem_value_alloca(&value); snd_ctl_elem_value_set_interface(value, SND_CTL_ELEM_IFACE_MIXER); snd_ctl_elem_value_set_name(value, "Master Playback Volume"); snd_ctl_elem_value_set_integer(value, 0, 42); CHECK(snd_ctl_elem_write(ctl, value)); snd_ctl_close(ctl); return 0; } Regards, Clemens ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user