Arduino 1.8.10 & Teensyduino 1.49b3: no audio library yet?

Status
Not open for further replies.

PaulS

Well-known member
Just did a fresh install of Arduino 1.8.10 & Teensyduino 1.49b3.
Selected Teensy 4.0. And then tried to select "Audio".

screenshot.png

Did I miss somehow that the Audio library is not yet supported on Teensy 4?

Thanks,
Paul
 
My guess that USB Audio output is not yet done...

From the B2 release notes:
Add Teensy 4.0 USB MIDI, Keyboard, Mouse, Joystick
My guess is the port of the Audio stuff might be a little more complex.
 
My guess is the port of the Audio stuff might be a little more complex.

Yes, indeed. Isochronous rate feedback used for asynchronous mode audio uses a 3 byte format when running at 12 Mbit speed, and a different 4 byte format for 480 Mbit speed. Frame timing is also different, 1 ms at 12 Mbit versus 125 us at 480 Mbit.

Currently all the existing USB audio code is written for the USB controller in the older chips and designed only for 12 Mbit speed.
 
Status
Not open for further replies.
Back
Top