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Archived:Background noise while streaming zero-filled buffers (Known Issue)

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Background noise while streaming zero-filled buffers KIS000656
Overview -
Category Symbian C++
Subcategory Audio
Reported against S60 2nd Edition and FP1, FP2, FP3
S60 3rd Edition and FP1
Date identified May 21, 2007
Symptoms -
Detailed description In some S60 devices the level of background noise may be disturbing when using an audio output stream to play back silence; that is, when the stream is fed with zero-filled buffers.
How to reproduce -
Solution Applications should not implement a ’mute’ functionality by streaming zero-filled  buffers. Instead, the output stream should either be stopped or its volume level should be set to 0.
Note that adjusting the volume is a significantly faster operation than stopping/ restarting the stream.
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