No, it cannot. Here is source adapted from an answer to Adjusting master volume on coderanch. The source iterates the available lines, checks if they have a control of the right type, and if so, puts them in a GUI attached to a JSlider import java.awt.*; import javax.swing.*; import javax.sound.sampled.*; import javax.swing.event.ChangeEvent; import javax.swing.event.ChangeListener; public … Read more
You can get at these values using IAudioMeterInformation in the CoreAudio APIs in Vista and Win 7. Managed wrappers are available in NAudio (get at the AudioMeterInformation from the MMDevice).
The following works for me. The parameter volume is to be given in the range [0, 100]. Beware, there is no error handling! void SetAlsaMasterVolume(long volume) { long min, max; snd_mixer_t *handle; snd_mixer_selem_id_t *sid; const char *card = “default”; const char *selem_name = “Master”; snd_mixer_open(&handle, 0); snd_mixer_attach(handle, card); snd_mixer_selem_register(handle, NULL, NULL); snd_mixer_load(handle); snd_mixer_selem_id_alloca(&sid); snd_mixer_selem_id_set_index(sid, 0); … Read more
You can use CSCore. There is a wrapper for the CoreAudioAPI-Audiosessions. Use something like that (for more details take a look at the unittests: AudioSession-UnitTests): private static void Main(string[] args) { using (var sessionManager = GetDefaultAudioSessionManager2(DataFlow.Render)) { using (var sessionEnumerator = sessionManager.GetSessionEnumerator()) { foreach (var session in sessionEnumerator) { using (var audioMeterInformation = session.QueryInterface<AudioMeterInformation>()) { … Read more