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SoundGenerator.WaveToneGenerate method

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Remarks

 

Generates and load into the editor a wave tone audio stream.

 

For further details about sound generation see the SoundGenerator object and the How to generate wave tones, noises, DTMF tones and text to speech tutorial.

 

 

Syntax

 

[Visual Basic]

control.SoundGenerator.WaveToneGenerate (

nWaveType as enumSoundGenWaveTypes,

nSampleRate as Long,

nChannels as Integer,

fFrequency as Single,

fAmplitude as Single,

nDurationMs as Long,

nFadeInMs as Long,

nFadeOutMs as Long

) as enumErrorCodes


 

[C++]

short control.SoundGenerator.WaveToneGenerate (

short nWaveType,

long nSampleRate,

short nChannels,

float fFrequency,

float fAmplitude,

long nDurationMs,

long nFadeInMs,

long nFadeOutMs

);


 

 

Parameter

Description

 

 

nWaveType

Type of wave tone.

Supported values are the following:

Mnemonic Value

Value

Meaning

SOUNDGEN_WAVE_TYPE_SINE

0

Sine wave

SOUNDGEN_WAVE_TYPE_SQUARE

1

Square wave

SOUNDGEN_WAVE_TYPE_SAWTOOTH

2

Sawtooth wave

SOUNDGEN_WAVE_TYPE_SAWTOOTH_NEGATIVE

3

Negative sawtooth wave

SOUNDGEN_WAVE_TYPE_TRIANGLE

4

Triangle wave

nSampleRate

Sample rate of the stream, e.g. 44100

nChannels

Number of channels of the audio stream.

Supported values are the following:

Value

Meaning

1

Mono audio stream

2

Stereo audio stream

4

3.1 audio stream

6

5.1 audio stream

8

7.1 audio stream

fFrequency

Wave tone frequency expressed in Hertz

fAmplitude

Wave tone amplitude.

- value 0.0 means that sound volume is muted

- values higher than 0.0 and lower 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 wave tone expressed in milliseconds.

nFadeInMs

Duration of the fade-in at the beginning of the wave tone expressed in milliseconds. Set this value to 0 if you don't need to apply a fade-in at the beginning of the audio stream.

nFadeOutMs

Duration of the fade-out at the end of the wave tone expressed in milliseconds. Set this value to 0 if you don't need to apply a fade-out at the end of the audio stream.

 

 

Return value

 

Value

Meaning

 

 

Negative value

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

enumErrorCodes.ERR_NOERROR (0)

The method call was successful.