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Hello,

I'm working with a Teensy 4.0 with the USB as AUDIO (USB_AUDIO in usb_desc.h) trying to update the descriptors (final goal to increase the number of output channels), and I'm struggling to...

Playing audio with the Teensy (4.0) as a USB audio interface works well with VLC (or Spotify) when using the USB_AUDIO interface, but not the USB_MIDI_AUDIO_SERIAL one (no sound at all).

Playing...

Hi Felipe, I'll PM you!

On my side I managed to get it "working" with 4 channels, but I'm getting some crackling which I haven't figured out yet.

So if anyone more experienced would like to spend one hour debugging with...

Great thanks Jay!

On my side I managed to get it "working" with 4 channels, but I'm getting some crackling which I haven't figured out yet.

So if anyone more experienced would like to spend one...

If someone who understands could explain what the bitwise operations do in the following function.... e.g why "left & 0x02"?!
Thanks!


static void copy_to_buffers(const uint32_t *src, int16_t...

Hi, if anyone wants to collaborate on the multi channels side of this I've opened a new thread for a similar project, see...

Hi folks,

I'd like to update the USB audio for Teensy 4 to handle more than 2 channels (starting with 4 but eventually 8) which it only currently supports, so that I can play 4/8 different...

I found the fader_table in data_waveforms.c and updated with sine mapping instead, works much better now (see below).

Let me know if you have other ideas.


const int16_t fader_table[257] = {...

Hi :cool:

I'm trying to achieve some "natural sounding" cross fading between 2 speakers, with the aim of keeping the volume constant during the fading.

For example:

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In the loop:

Hi Teensy folks,

I'm experiencing the same issue trying to read multiple wave files simultaneously, and I'm considering 2 alternatives to overcome the problems that seemed caused by the SD...

Thanks Mark, I also think it's most likely a driver issue.
However I don't know how the USB interface is created by the Teensy and how it provides the data transfer, and I wonder if there could be a...

Hello,

I'd like to use the Teensy as a USB Audio interface for a microphone, and I've made some tests with the Audio board and this simple design:

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It works fine but the latency is...

Sorry but I have another question, I tried to look in the forum but didn't find the asnwer.
When I use Teensy as a usb microphone on Windows, there is a delay that is more important than when I use...

Brilliant, Thanks Paul :)

Hello,

I'm new with Teensy and I want to create a USB audio interface, I purchased the Teensy 3.2 and the Audio board as it seemed at the time that the USB audio was not supported on Teensy 4.
...