Canon POWERSHOT S2 IS User Manual page 132

- Recorded Length
11.025kHz 8.000kHz
Start-up Sound 1.0 sec. or less 1.3 sec. or less
Operation Sound 0.3 sec. or less 0.4 sec. or less
Self-TimerSound 2.0 sec. or less 2.0 sec. or less
Shutter Sound 0.3 sec. or less 0.4 sec. or less
Any data types other than those described above cannot be used with this
camera.
An example of this function is to record "Say Cheese" as a self-timer
sound so that the camera will replay this sound 2 seconds before the
photo is taken. You could also record cheerful music to bring out the
natural smiles of your subjects, or so they can strike a pose fitting the
music.
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