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  • chipaudette's Avatar
    Yesterday, 09:37 PM
    I can no longer get the USB Audio to work at any sample rate (in Audacity)...neither 44100 nor 96000. I've tried different USB ports and I've tried rebooting. I've tried enable/disable in Windows Device Manager. ...
    22 replies | 344 view(s)
  • chipaudette's Avatar
    Yesterday, 11:43 AM
    Cool about the I2S classes! Yes, I'm using Teensy 4.1. Chip
    22 replies | 344 view(s)
  • chipaudette's Avatar
    Yesterday, 11:40 AM
    So I don't need to do anything to tell the I2S classes that the sample rate is different than 44100? The classes use AUDIO_SAMPLE_RATE to set the mult/div parameters correctly? Chip
    22 replies | 344 view(s)
  • chipaudette's Avatar
    07-27-2021, 10:23 PM
    I just tried at 44.1kHz by recording audio from my Tympan via USB to the PC. I used the microphones on-board the Tympan and talked into them. I recorded the audio on the PC in Audacity. I confirmed that 44100 Hz...
    22 replies | 344 view(s)
  • chipaudette's Avatar
    07-27-2021, 09:11 PM
    chipaudette replied to a thread WaveplayerEx in Audio Projects
    Sweet! This is probably old news since you appear to have it working, but... With the Tympan_Library, I write 4-channel WAV files all the time. I always use 16-bit int, but I do a variety of sample...
    38 replies | 540 view(s)
  • chipaudette's Avatar
    07-27-2021, 12:52 AM
    I got sidetracked debugging an unrelated Bluetooth issue today. I didn't get to do any USB trials.
    22 replies | 344 view(s)
  • chipaudette's Avatar
    07-25-2021, 07:58 PM
    Thanks! Btw, high sample rates might not be relevant for audible audio but the high sample rates are very helpful when exploring ultrasound (mice, rats, bats) or when delightfully mis-using the audio library for...
    22 replies | 344 view(s)
  • chipaudette's Avatar
    07-25-2021, 06:41 PM
    Hi Frank, I need my hand held a bit on this. I'm only used to installing the core stuff from the Teensyduino installer. To try your stuff, do I need to download your whole repo and drop it on top of the current...
    22 replies | 344 view(s)
  • chipaudette's Avatar
    07-05-2021, 10:11 PM
    Installed Arduino 1.8.15 and then installed TD 1.54. no installation problems. I compiled a complex sketch for T4.1 (Tympan RevE) using my floating point audio library which uses a the new SD functionality. So...
    46 replies | 2501 view(s)
  • chipaudette's Avatar
    06-30-2021, 12:51 AM
    Since someone brought up MTP, it'd be great if the Teensyduino's experimental MTP support could be switched to a real Serial (per the MTP library's readme) rather than the emulated serial that comes with the earlier...
    65 replies | 1671 view(s)
  • chipaudette's Avatar
    06-21-2021, 12:34 AM
    I forgot to mention that I did a blog post discussing my latency measurements and the impact of these different system settings. You might be interested: http://openaudio.blogspot.com/search/label/latency Chip
    7 replies | 458 view(s)
  • chipaudette's Avatar
    06-21-2021, 12:32 AM
    Some of us have done extensions to the audio library in order to support floating point math, instead of just the fixed point math used by the Teensy audio library. In some of these libraries, the sample rate and block...
    7 replies | 458 view(s)
  • chipaudette's Avatar
    06-11-2021, 05:43 PM
    And I can vouch for Blackaddr's Teensy-based Guitar Audio Shield. It's fun!
    6 replies | 418 view(s)
  • chipaudette's Avatar
    06-11-2021, 01:14 AM
    There are several other folks who have done this, so you could look at their solutions. The OpenAudio library and Tympan_Library both derive from my way of extending the teensy audio system to floating point. Here...
    6 replies | 418 view(s)
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USB Audio samplerates added Yesterday 09:37 PM
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10-18-2015