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iphone - Setting volume on Audio Unit …
https://stackoverflow.com/questions/3094691/setting-volume-on-audio-unit-kaudiounitsubtype-remoteio
if your target is desktop this will help you http://developer.apple.com/audio/audiounits.html with iphone target. result = AudioUnitSetParameter ( yourUnit, kHALOutputParam_Volume, kAudioUnitScope_Output, busNumber, volume, 0); this will set device volume. Share. Follow this answer to receive …
Apple Developer Documentation
https://developer.apple.com/documentation/audiotoolbox/kmultichannelmixerparam_volume
var kMultiChannelMixerParam_Volume: Audio Unit Parameter ID { get} Discussion. Global scope. The value should be a number between 0.0 and 1.0. The default value is 1.0.
core audio - iOS - Audiounit volume balance between ...
https://stackoverflow.com/questions/26689020/ios-audiounit-volume-balance-between-channel
You just need to set those properties on the input scope of the desired channel (element). float pan = 0; // -1 -> 1 AudioUnitSetParameter (MixerUnit, kMultiChannelMixerParam_Pan, kAudioUnitScope_Input, channel, pan, 0); Got the above answer in the Core Audio mailing list. Thank you Dave O'Neill.
Apple Developer Documentation
https://developer.apple.com/documentation/audiotoolbox/1438454-audiounitsetparameter
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CoreAudio AUGraphから音が出ない - fixes.pub
https://www.fixes.pub/program/99990.html
Output defaults to zero too! CheckError(AudioUnitSetParameter(mMixer, kMultiChannelMixerParam_Volume, kAudioUnitScope_Output, 0, 1.0, 0), "AudioUnitSetParameter failed"); ドキュメントには、誤って kMultiChannelMixerParam_Volume と書かれているようです デフォルトは1.0です。 Global scope.
Volume adjustment does not work on iOS · Issue #50 ...
https://github.com/spotify/cocoalibspotify/issues/50
AudioUnitSetParameter(outputAudioUnit, kHALOutputParam_Volume, kAudioUnitScope_Output, 0, (vol * vol * vol), 0); But the outputAudioUnit is a RemoteIO which does not have the kHALOutputParam_Volume parameter in iOS. Another method for adjusting the buffer volume should be used.
Sync playback and recording — The Amazing Forum
https://forum.theamazingaudioengine.com/discussion/83/sync-playback-and-recording
Add something like this to your implementation file: Add code similar to this right after you start the recording process: This pushes the playback back in my case 4430.0 samples to compensate for delay in file recording. It worked for me, hopefully it works for everyone else and we get some sort of official fix later.
How to set pan in IOS Audio Unit Framework
https://www.py4u.net/discuss/1357789
Answer #1: Using AudioUnit API, you can simply set the kMultiChannelMixerParam_Pan property of the audio mixer unit to set the stereo pan: AudioUnitParameterValue panValue = 0.9; // panned almost dead-right. possible values are between -1 and 1 int result = AudioUnitSetParameter (mixerUnit, kMultiChannelMixerParam_Pan, kAudioUnitScope_Input, 0, panValue, 0 ); if (result …
Session Volume Controls - Win32 apps | Microsoft Docs
https://docs.microsoft.com/en-us/windows/win32/coreaudio/session-volume-controls
Thus, the resulting change in signal amplitude is a linear combination of the client and system volume levels. For example, if the client volume level is 0.8 and the system volume level is 0.5, the effective volume level is (0.8). (0.5) = 0.4. Note that perceived loudness is not linear with respect to signal amplitude.
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