koobas.hobune.stream
Get microphone FFT input without playback
Hi,
I am trying to get the spectrum data from a smartphone's microphone, but I don't want the microphone audio to play in the scene. (The clip is being recorded and loops)
Evidently, the audiosource must be playing in order to fetch the spectrum data, so I presumed that putting "audioSource.muted = true" would do the trick. This also mutes the spectrum data however.
The common workaround suggested currently is to create a mixer group that puts the volume to -80db, and assign that to the microphone audiosource. Doing this currently on iOS bugs out my global game volume however, making it impossible to increase the maximum volume above 50% (Unity 5.5.2p4)
Any suggestions on how I can achieve getting the spectrum data without having to actually play the recorded audioclip?
As it turns out, when Unity is using the microphone on iOS, the maximum speaker volume of the OS gets reduced by about half. (As mentioned in this post)
I am looking for a way to fetch the microphone FFT without it affecting the speaker volume on the device, preferably in a way that doesn't require an audio source in the scene with any workaround mixer values attached.
In an ideal situation, I would just be able to get the spectrum data directly from the audio clip, but I presume that is impossible without some kind of playback.
Thanks in advance
I never really worked with microphone input. However when you can access the PCM data you could try my FFT implementation
