Hi Rory,
Thanks for telling me the issue, I will do some research on that.
I can swap between .wav and .ogg file and they are in the same speed and pitch too, but the problem now is that both .wav and .ogg files have to be adjusted the pitch of AudioSource component to ‘0.92’ in order to playback the original pitch and speed (like play directly through the quicktime player or a plain AudioSource with the default pitch ‘1.0’ ). Is that also happens to you? Or you mean you can play the original pitch and speed with CsoundUnity AudioSource pitch ‘1.0’?
Good news is my Scarlett Audio Interface have no problem anymore!
Thanks again for your time and patience:)