Any OpenCV-like C/C++ library for Audio processing?
For audio capture and playback, portaudio comes to my mind.
For audio processing, STK looks promising.
Have a look at this related question too: Can anyone recommend a decent DSP/speech library in C++?
I recommend these three libs:
very easy to use and friendly for general signal processing Aquila-dsp
strong lib for audio signal processing although hard to use and it's very big and complicated for beginners: CLAM Project
another one I have no experience about it, is worth considering though. tspl
Check out Essentia http://essentia.upf.edu/ Essentia is an open-source C++ library for audio analysis and audio-based music information ...It contains an extensive collection of reusable algorithms which implement audio input/output functionality, standard digital signal processing blocks, statistical characterization of data, and a large set of spectral, temporal, tonal and high-level music descriptors.
There is also an openFrameworks branch, although you might want to hold off until is officially 64 bit, C++11 in a couple of months. https://github.com/MTG/essentia