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

[byungjun]

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

[wcalvert]

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.

[byungjun]

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