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SilenceDetectionOnFile method

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Remarks

 

Performs the calculation of silent portions at the start and end of the given sound file: differently from the SilenceDetectionOnPlayerRequest and SilenceDetectionOnPlayer methods, the sound file doesn't need to be loaded inside a player.

 

Supported audio file formats are the same mentioned inside the documentation of the LoadSound method. Video files are not supported by this method.

 

This method doesn't work with sounds with more than 2 channels (5.1 or 7.1) or if the EnableMixingFeatures property has been set to "false".

 

For further details about silence detection management see the How to detect silent portions of sound files tutorial.

 

 

Syntax

 

[Visual Basic]

Public Function SilenceDetectionOnFile (

strPathname as String,

nThresholdInitial as Int32,

nThresholdFinal as Int32,

ByRef nInitialPosition as Int32,

ByRef nFinalPosition as Int32,

ByRef nSoundDuration as Int32

) as enumErrorCodes


 

[C#]

public enumErrorCodes SilenceDetectionOnFile (

string strPathname,

Int32 nThresholdInitial,

Int32 nThresholdFinal,

ref Int32 nInitialPosition,

ref Int32 nFinalPosition,

ref Int32 nSoundDuration

);


 

[C++]

public: enumErrorCodes SilenceDetectionOnFile (

string strPathname,

Int32 nThresholdInitial,

Int32 nThresholdFinal,

Int32 __gc *nInitialPosition,

Int32 __gc *nFinalPosition,

Int32 __gc *nSoundDuration

);


 

 

Parameter

Description

 

 

strPathname

Absolute pathname of the sound file to analyze.

nThresholdInitial

Number representing the silence threshold at the start of the loaded sound: can assume values from 0 (no sound) to 32767 (max volume).

nThresholdFinal

Number representing the silence threshold at the end of the loaded sound: can assume values from 0 (no sound) to 32767 (max volume).

nInitialPosition

Reference that, on return from the method call, will contain the detected position, expressed in milliseconds, where audible sound begins.

nFinalPosition

Reference that, on return from the method call, will contain the detected position, expressed in milliseconds, where audible sound ends.

nSoundDuration

Reference that, on return from the method call, will contain the duration, expressed in milliseconds, of the sound file being analyzed.

 

 

Return value

 

Value

Meaning

 

 

Negative value

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

enumErrorCodes.NOERROR (0)

The method call was successful.