Insert - Noise

Use this command to insert noise.

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Amplitude

Determines the amplitude (level) of the noise. Drag the slider or enter the new value in the Amplitude box to change the amplitude.

Sound Length

Determines how long the noise you are inserting should last. Use the dropdown list on the right to change the unit of measurement.
When you choose Effect - Insert - Noise with a range of waveform selected, the length of the selection is displayed in the Sound Length box. If you change the value in the Sound Length, the waveform selection will be replaced with the specified length of noise.