有没有办法将应用程序音频更改为不同的音频设备？

Question

I want to be able to change Audio Output/Input device per each application just like in Windows Settings Volume Mixer where you can click on a application and you can change Output device and Input Device .

I've tried using a Registry Editor and figured out It was in Registry location of Computer\HKEY_CURRENT_USER\Software\Microsoft\Multimedia\Audio\DefaultEndpoint and each folder is 8bit + _0 (idk why) inside of each folder have default key. and I figured out if you change audio output/input device at the same dir you should see new 000_000 , 000_000_p , 001_000 , and 001_000_p and when you delete this key and restart you audio service It will change it to default .

My question is there a way to change it? I couldn't find Windows api doc for it. but I did see some other application is able to do it such as https://github.com/File-New-Project/EarTrumpet and https://github.com/audiorouterdev/audio-router

I do believe that those other keys are storing output/input device

Also I found this too https://github.com/Belphemur/SoundSwitch/blob/dev/SoundSwitch.Audio.Manager/AudioSwitcher.cs#L109

Answer 1

The sources you attached show Windows.Media.Internal.AudioPolicyConfig 's SetPersistedDefaultAudioEndpoint function Or IPolicyConfigVista Interface 's globally SetDefaultEndpoint . And It seems audio-router changes the destination process through swapping virtual table between the two Interface objects.