To provide feedback (audible mouse clicks, spoken alert messages)
n
As an alternative to text for the visually impaired
n
Use high-quality sound. Poor audio gives an immediate negative impression.
n
Conserve file space. Calculate sound file sizes. Choose the most efficient sound
format.
n
Lower sample rates and sizes for speech.
n
Consider MIDI sources.
n
Consider compression options such as MP3.
n
Consider the playback environment.
n
Public vs. private use
n
Quality of synthesizers for MIDI sound
n
Compatibility of sound formats with playback hardware and software
n
Give users control:
n
over volume
n
to stop or start play
n
Avoid excessive use of sound—sound can be more tiring for users than images ...
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