Huazhong University of Science and Technology
Visual Sound Instrument (Version 3.2)
Signal Menu
a). Read
Open signal from a windows WAV sound file.
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b).Save
Save signal to a windows WAV sound file, or a text data file.
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c).Recording
Control a 16bit sound card to record a signal.
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c).Recording Parameters
Set recording parameters, as shown below.
Sample frequency usualy is 8000/11025/22050/44100/..
Sample length is time of 1024, 1024/2048/.../204000.
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c).Signal Generator
Control a inner signal generator to produce digital signal.
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d)Generate Parameters
Set inner signal generator parameters.
Signal type include:.

> Sine wave
> White noise
> Square wave
> Trigon wave
> Saw wave
> Pulse signal
> Beat wave

Par1=Amplitude, Par2=Frequency, Par3=Phase
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e)Playing
Playing signal from sound card.
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f)Playing Parameters
Set playing parameters, as shown below.
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g)Exit
Exit the program.
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[Return]
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2004.1.10