16 bit, 44.1 kHz streaming audio library for Teensy 3.x, featuring:
http://www.pjrc.com/teensy/td_libs_Audio.html
http://www.pjrc.com/teensy/gui/
Audio Adaptor Board for 16 bit stereo input and output.
Teensy 3.1 12 bit DAC
Teensy 3.1 or 3.0 ADC Input
Teensy 3.1 or 3.0 PWM Output