Copyright © 2008-2018 MultiMedia Soft

SoundComposer.ItemNoiseAdd method

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Remarks

 

Adds a noise generator element to the audio stream previously created through the SoundComposer.SessionInit method.

 

For further details about sound composing see the the SoundComposerMan class and the How to compose a sound tutorial.

 

 

Syntax

 

[Visual Basic]

Public Function ItemNoiseAdd (

strFriendlyName as String,

nChannel as Int16,

nNoiseType as enumSoundGenNoiseTypes,

fReserved as Single,

fAmplitude as Single,

nDurationMs as Int32,

nOffsetMs as Int32,

ByRef nUniqueId as Int32

) as enumErrorCodes


 

[C#]

public enumErrorCodes ItemNoiseAdd (

string strFriendlyName,

Int16 nChannel,

enumSoundGenNoiseTypes nNoiseType,

float fReserved,

float fAmplitude,

Int32 nDurationMs,

Int32 nOffsetMs,

ref Int32 nUniqueId

);


 

[C++]

public: enumErrorCodes ItemNoiseAdd (

string strFriendlyName,

Int16 nChannel,

enumSoundGenNoiseTypes nNoiseType,

float fReserved,

float fAmplitude,

Int32 nDurationMs,

Int32 nOffsetMs,

Int32 __gc  *nUniqueId

);


 

Parameter

Description

 

 

strFriendlyName

Friendly name of the item

nChannel

Channel of the audio stream that will reproduce the item: can be a value between 0 and the number of channels of the audio stream created through the SoundComposer.SessionInit method.

nNoiseType

Type of noise.

Supported values are the following:

Mnemonic Value

Value

Meaning

SOUNDGEN_NOISE_TYPE_WHITE

0

White noise

SOUNDGEN_NOISE_TYPE_PINK

1

Pink noise

SOUNDGEN_NOISE_TYPE_BROWN

2

Brown noise

fReserved

Reserved for future uses, set this parameter to 0

fAmplitude

Noise amplitude.

- value 0.0 means that sound volume is muted

- values higher than 0.0 and smaller than 1.0 attenuate the sound volume

- value 1.0 sets the sound at full volume

- values higher than 1.0 amplify the sound volume

nDurationMs

Duration of the noise expressed in milliseconds

nOffsetMs

Offset of the noise, expressed in milliseconds, respect to the beginning of the audio stream.

nUniqueId

Reference to a value that, on return from the method call, will contain the unique identifier of the newly added element: this unique identifier will be used in order to invoke further methods related to the use of this specific element:

 

- SoundComposer.ItemNoiseTypeGet to obtain the current type of noise

- SoundComposer.ItemNoiseTypeSet to modify the type of noise

 

- SoundComposer.ItemAmplitudeGet to obtain the amplitude of the item

- SoundComposer.ItemAmplitudeSet to modify the amplitude of the item

- SoundComposer.ItemChannelGet to obtain the channel of of the audio stream that will reproduce the item

- SoundComposer.ItemChannelSet to modify the channel of of the audio stream that will reproduce the item

- SoundComposer.ItemRemove to remove the item from the sound composition

- SoundComposer.ItemDurationGet to obtain the duration, expressed in milliseconds, of the item

- SoundComposer.ItemDurationSet to modify the duration, expressed in milliseconds, of the item

- SoundComposer.ItemOffsetGet to obtain the offset, expressed in milliseconds, of the item respect to the beginning of the audio stream

- SoundComposer.ItemOffsetSet to modify the offset, expressed in milliseconds, of the item respect to the beginning of the audio stream

- SoundComposer.ItemTypeGet to obtain the item's type

- SoundComposer.ItemFriendlyNameGet to obtain the friendly name of the item

- SoundComposer.ItemFriendlyNameSet to modify the friendly name of the item

 

 

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.