I read the book and I really liked it but now I'm trying to make something I bit more complicated. I'm trying to make a custom equalizer that works for the whole phone (so for all the media played, and maybe except the phone calls because that's secured I think).
Someone of IRC said this:
the way equalizers work is that you take the time-domain sample input stream, transform it to the frequency domain, tweak the levels in the freq range you want to alter, re-transform back to the time domain, and feed the result back into the audio pipelline
How do I get access to the media output, and how do I transform that to a frequency domain and tweak the levels?
I'd like to do this using the android like in the book so, if possible, no C++ stuff.