Android：AudioRecord 和 DynamicsProcessing

Question

Currently I am recording audio using AudioRecord , and I want to implement EQ, compressor and limiter audio filters. that DynamicsProcessing is just what I need, but the key thing is that it typically supposed to work with MediaPlayer or AudioTrack , which means that the effects are applied during playing the already prerecorded audio sample.

But what I need is to apply these filters during recording, so that the resulting file will contain already filtered audio.

Is it possible to achieve this using DynamicsProcessing and somehow binding it to the AudioRecord instance? Or are there some other ways to apply such a filters during audio recording native to SDK or using some existing library?

PS: I couldn't find anything relevant and the only idea that came up is implementing the filtering of the data gained via AudioRecord#read by hands, which, I believe, will take quite a while for a person that isn't familiar with audio engineering.

Answer 1

The answer is No .

You can't attach the DP effect to the AudioRecord through SDK API .

Look at the Sound Amplifier app, it deployed DynamicsProcessing features but re-implementing it with a standalone shared native library.