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  1. USB_MIDI_AUDIO_SERIAL interface not working with some software (e.g VLC)

    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...
  2. Hi Felipe, I'll PM you!

    Hi Felipe, I'll PM you!
  3. On my side I managed to get it "working" with 4...

    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...
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    Great thanks Jay! On my side I managed to get...

    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...
  5. If someone who understands could explain what the...

    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...
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    Hi, if anyone wants to collaborate on the multi...

    Hi, if anyone wants to collaborate on the multi channels side of this I've opened a new thread for a similar project, see...
  7. USB interface for multi channel outputs, not just stereo

    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...
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    I found the fader_table in data_waveforms.c and...

    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] = {...
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    Natural cross fading with fader component

    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:
  10. Hi Teensy folks, I'm experiencing the same...

    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...
  11. Thanks Mark, I also think it's most likely a...

    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...
  12. Teensy as USB Audio interface for Mic / Line in

    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:

    23630

    It works fine but the latency is...
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    Sorry but I have another question, I tried to...

    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...
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    Brilliant, Thanks Paul :)

    Brilliant, Thanks Paul :)
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    USB Audio for Teensy 4

    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.
    ...
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