Question

Have few short sound effect samples, which play just fine in emulator, but not at all in real iPhone 3GS. Here’s the code, about as-is from Apple SysSound sample:

CFBundleRef mb = CFBundleGetMainBundle ();
CFURLRef soundFileURLRef = CFBundleCopyResourceURL
    (mb, CFSTR("mySound"), CFSTR ("caf"), NULL);

SystemSoundID sid;
AudioServicesCreateSystemSoundID(soundFileURLRef, &sid);
AudioServicesPlaySystemSound(sid);

When using iPhone, I can hear keyclicks and music from iTunes (not trying to use at same time as playing my sound) – but cannot hear my sound at all. Vibra works ok, so even Framework should be set up correctly.

Tried even the SoundEffect.h/m sample code, no change. Used same sound files, but shouldn’t CAF be ok, especially when it plays in emulator?

What can I try next?

Answer 1

Try converting to a different format such as wav or mp3, then play again. If you want to use caf, Make sure you are formatting the caf correctly in Terminal.app:

afconvert -f caff -d ima4 mysound.wav