Wave shield plays some wav files but not all, any idea ?

Hello guys,

Here is my situation :
I've made an audio installation for an outside happening, it's detecting motion and plays sounds with a random (code from mchobby with 6 sounds). The code compilation is good so it seems to come from the wave files. For the moment some of my sounds are recognized and played but some others are not.. I verified the files, I tried to do new exports, I tried different softwares (Audacity, Itunes, Garage Band)..

Equipement :

Arduino Uno
Wave Shield Kit (+ 4GB SDHC (FAT32))
Pir Sensor
9v powerbox

Details of my all my wav files :

22050HZ
16-bits
Mono

For information I work on Mac system.

Does anyone has an idea ?

Thanks a lot by advance for helping !

Bebopeuloula

Do the file names follow the 8.3 naming convention?

have you tried other files (with same name).. or same file with new name?

WAV format covers many sample sizes and rates - check that all the files are the right sort.

Sorry, I can't help as I do not own a Wave shield. I decided it was cheaper to just buy an Arduino Due for $12 from AliExpress and when combined with $3 SD card adapter it can play WAV files at higher quality without requiring a WAV shield. Of course it does require some wiring and the audio signal still needs amplification. (I just used a cheap PC speaker/amp)

This may not have any effect, but try changing the SD format to MS-DOS Fat16 instead of 32, and hit the reset button on the shield. Am new to all of this but have been tinkering with a similar situation- good luck!