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RecordedSound.TrimSilence method

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Requests to edit the recorded sound deleting the given sound range.


For further details about recorded sound methods refer to the RecordedSound class section.

For further details see the How to perform a recording session section.





[Visual Basic]

Public Function TrimSilence (

nSilenceThreshold as Int16

) as enumErrorCodes



public enumErrorCodes TrimSilence (

Int16 nSilenceThreshold




public: enumErrorCodes TrimSilence (

Int16 nSilenceThreshold








Number representing the silence threshold referred to the volume level. Supported values are expressed with a linear volume in the range from 0 to 32767. If for example you should set a value of 800, any portion of sound having a volume level lower than 800 would be considered as silent.

In case you should need to set a threshold value expressed in dB, before setting this parameter you could convert the value in dB into a linear value through the following formula (C syntax):


ValueLinear = 32767 * pow (10, ValueInDB/20);


In case you should need to define different thresholds for the initial and final portions of the recorded sound, use the RecordedSound.TrimSilenceEnhanced method.



Return value






Negative value

An error occurred. Check the LastError property value in order to see the last error.

enumErrorCodes.ERR_NOERROR (0)

The method call was successful.