Copyright © 2008-2018 MultiMedia Soft

SoundComposer.ItemSoundFileDurationStretch method

Previous pageReturn to chapter overviewNext page



Stretches the duration of the sound file by modifying its tempo and without changing the original pitch. After the time stretch, the updated duration can be obtained through the SoundComposer.ItemSoundFileDurationGet method.


The tempo change algorithm is always applied to the full sound file: a call to this method will return an error if the loading range should have been modified through the SoundComposer.ItemSoundFileLoadRangeSet method.


This setting is ignored when more than one loop is requested through the SoundComposer.ItemSoundFileLoopSet method.


For further details about sound composing see the the SoundComposer object and the How to compose a sound tutorial.





[Visual Basic]

control.SoundComposer.ItemSoundFileDurationStretch (

nUniqueId as Long,

nDurationMs as Long

) as enumErrorCodes



short control.SoundComposer.ItemSoundFileDurationStretch (

long nUniqueId,

long nDurationMs








The unique identifier of the sound file item previously returned by the call to one of the following methods: SoundComposer.ItemSoundFileAdd, SoundComposer.ItemSoundFileMemoryAdd, SoundComposer.ItemSoundFileRawAdd, SoundComposer.ItemSoundFileMemoryRawAdd, SoundComposer.ItemSoundFileFromEditorAdd,or SoundComposer.ItemSoundFileFromRecorderAdd.


The modified duration expressed in milliseconds



Return value






Negative value

An error occurred, check the LastError property value in order to get the error code

enumErrorCodes.ERR_NOERROR (0)

The method call was successful