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Effects.PitchApply method

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Applies a Pitch change to the given portion of sound under editing. A pitch change will affect sound pitch or key, without affecting the sound tempo or playback rate so the sound duration won't be altered.


A successful call to this method will fire the SoundEditStarted event followed by a number of SoundEditPerc events and finally by the SoundEditDone event.


For further details about methods related to the use of special effects refer to the Effects COM object.





[Visual Basic]

control.Effects.PitchApply (

nStartPosition as Long,

nEndPosition as Long,

fPitch as Single

) as enumErrorCodes



short control.Effects.PitchApply (

long nStartPosition,

long nEndPosition,

float fPitch









Start position, expressed in milliseconds, of the affected sound range.


End position, expressed in milliseconds, of the affected sound range.. If set to -1 the end position will be set to the end of the sound.


Pitch increment/decrement expressed in semitones. Supported values are from -50 to 50.



Return value






Negative value

An error occurred (see the LastError property for further error details)

enumErrorCodes.ERR_NOERROR (0)

The method call was successful.