Real-Time Audio Processing with Teensy Audio Board

[chipaudette]

Hi All,

I'm going to be using the Teensy Audio Board for real-time audio processing (ie, audio in -> mangle the audio -> audio out). As a new person getting into new hardware (like the Teensy Audio Board) and new software (like the Teensy Audio Library), I find it useful to see other people's "getting started" stories. So, in that spirit, I figured that I'd share my own "getting started" story.

Right now, I've taken just the first very simple step...I've passed audio from the Line input to Headphone output. Even on such a simple task, though, one learns important things. For anyone else that is interested, pictures and example code are here:

http://openaudio.blogspot.com/2016/10/teensy-audio-board-first-audio.html



Next up will be to use the USB audio interface. Then, I'll document my self-noise measurements and the transition to the Teensy 3.6. It'll be a fun voyage!

Does anyone else have their own "getting started" story to share?

Chip

 

[chipaudette]

While doing my line-in testing above, I saw that Teensy had the capability to do audio over USB. That's pretty dang amazing. So I gave it a try. If you've never done it before, and need a few pointers, you can see my experience here:

http://openaudio.blogspot.com/2016/10/teensy-audio-over-usb.html


Does anyone else have experience using the USB link? What cool things have you done with it?

Chip

 

[GremlinWrangler]

Been a number of effect pedals around, first time I've seen USB-USB. Some design notes for an effects pedal:
https://learn.sparkfun.com/tutorials/proto-pedal-example-programmable-digital-pedal

Main thing is to make sure you allocate enough memory if you add effects, and avoid mixing things that add to more than 1 and hard clipping.