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

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Article Metadata

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Compatibility

Platform(s): S60 2nd Edition (initial release) and FP1, FP2, FP3
S60 3rd Edition (initial release) and FP1

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Article

Created: User:Technical writer 1 (21 May 2007)

Last edited: hamishwillee (16 Mar 2012)

Description

In some S60 2nd and 3rd Edition 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.

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.