I am doing audio effects using Audacity. And there some steps are using bass and treble, I can’t find any related api about this.Does anybody known?
You have to add a DSP effect.
http://www.fmod.org/documentation/#content/generated/FMOD_DSP_MULTIBAND_EQ.html
would be a good effect to get accurate bass and treble but if its a bit overwhelming you can just use http://www.fmod.org/documentation/#content/generated/FMOD_DSP_PARAMEQ.html