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

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[[Category:Known Issue]][[Category:Symbian C++]][[Category:Audio]][[Category:S60 2nd Edition]][[Category:S60 3rd Edition]][[Category:S60 3rd Edition, Feature Pack 1]]
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[[Category:Known Issue]][[Category:Symbian C++]][[Category:Audio]][[Category:S60 2nd Edition (initial release)]][[Category:S60 3rd Edition (initial release)]][[Category:S60 3rd Edition FP1]]
{{KBKI}}
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|id=KIS000656
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|platform=S60 2nd Edition and FP1, FP2, FP3<br>S60 3rd Edition and FP1
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|devices=
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|category=Symbian C<nowiki>++</nowiki>
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|subcategory=Audio
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|creationdate=May 21, 2007
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|keywords=
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|platform= S60 2nd Edition and FP1, FP2, FP3<br>S60 3rd Edition and FP1
|capabilities=<!-- Capabilities required (e.g. Location, NetworkServices.) -->
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|devicecompatability= <!-- Compatible devices (e.g.: All* (must have GPS) ) -->
|author=[[User:Technical writer 1]]
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<!-- The following are not in current metadata -->
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|subcategory= Audio
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==Solution==
 
==Solution==
Applications should not implement a <nowiki>’</nowiki>mute<nowiki>’</nowiki> functionality by streaming zero-filled &nbsp;buffers. Instead, the output stream should either be stopped or its volume level should be set to 0.<br>Note that adjusting the volume is a significantly faster operation than stopping/ restarting the stream.
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Applications should not implement a 'mute' functionality by streaming zero-filled &nbsp;buffers. Instead, the output stream should either be stopped or its volume level should be set to 0.<br>Note that adjusting the volume is a significantly faster operation than stopping/ restarting the stream.

Revision as of 03:09, 16 March 2012

Article Metadata
Compatibility
Platform(s): S60 2nd Edition and FP1, FP2, FP3
S60 3rd Edition and FP1
S60 3rd Edition FP1
S60 3rd Edition (initial release)
S60 2nd Edition (initial release)
Article
Created: User:Technical writer 1 (21 May 2007)
Last edited: hamishwillee (16 Mar 2012)

Archived.pngArchived: This article is archived because it is not considered relevant for third-party developers creating commercial solutions today. If you think this article is still relevant, let us know by adding the template {{ReviewForRemovalFromArchive|user=~~~~|write your reason here}}.

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.

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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