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Thread: playSdWave -> Short glitch on start while playing another sound file.

  1. #1
    Junior Member
    Join Date
    Apr 2015
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    17

    playSdWave -> Short glitch on start while playing another sound file.

    Hello,
    I'm experimenting with teensy audio shield and I hear short glitch on start of playing from SD card while I was playing another file.
    Is there a quick fix for this problem?
    Thank you.
    Byungjun

  2. #2
    What SD card are you using? Good concurrent playback requires a good SD card. I have been using Lexar 1000x 32GB and playing 3-4 samples concurrently is possible. The Lexar 1800x cards would be even better, but they're expensive.

    Also, I would recommend Greiman's SDFat library and using SDIO and DMA if possible. SDIO and DMA support haven't been added for Teensy 4 yet though.

  3. #3
    Junior Member
    Join Date
    Apr 2015
    Posts
    17
    Quote Originally Posted by wcalvert View Post
    What SD card are you using? Good concurrent playback requires a good SD card. I have been using Lexar 1000x 32GB and playing 3-4 samples concurrently is possible. The Lexar 1800x cards would be even better, but they're expensive.

    Also, I would recommend Greiman's SDFat library and using SDIO and DMA if possible. SDIO and DMA support haven't been added for Teensy 4 yet though.
    Than you for your comments.
    I'm using SanDisk Ultra under PJRC recommendation, down at the below page.
    https://www.pjrc.com/store/teensy3_audio.html
    I'll try Lexar 1000x 32GB and Greiman's SDFat library.
    Thank you again for your help.

    Best, Byungjun

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