Apple Soundtrack Pro - Manual (Page 165)

Chapter 7 Working in the Waveform Editor 165
To set the volume level of the inserted noise:
m In the Noise Generator dialog, drag the Volume slider left or right to set the noise level.
You can also type a level (in decibels) in the Volume field.
Inserting a Waveform
When you choose Process > Insert, then choose Waveform from the Insert submenu,
the Wave Generator dialog appears. You can set the type of waveform to insert, set the
length of the inserted waveform, choose the format for setting the waveform length
(any of the Time Ruler Units formats), and set the volume of the inserted waveform.
The inserted waveform can be a sine, sawtooth, square, or triangle wave.
To choose the type of waveform to insert:
m In the Wave Generator dialog, choose the type of waveform from the Waveform Type
pop-up menu.
To set the frequency of the inserted waveform:
m In the Wave Generator dialog, drag the Frequency slider left or right to set the
frequency. You can also type a frequency (in Hertz) in the Frequency field.
To set the length of the inserted waveform:
1 In the Wave Generator dialog, choose the format you want to use from the Duration
pop-up menu.
2 In the Duration value slider, do one of the following:
 Click the left arrow to shorten the length of the inserted waveform, or click the right
arrow to increase the length.
 Click the center of the value slider, then drag the slider that appears left or right to
change the length of the inserted waveform.
 Click the value in the value slider, then type a new value.
3 Click OK.