Zooming Using the Mouse
With the mouse, you can change the zoom factor by clicking and dragging or by using the mouse wheel.
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To zoom horizontally, in the wave window or the montage window, position the mouse cursor over the time ruler, click, and drag up or down.
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To zoom horizontally while maintaining the cursor position, position the mouse cursor over the time ruler, press Shift, and drag up or down.
For this, you can also use the mouse wheel. Press Ctrl/Cmd-Shift, point at a waveform, and use the mouse wheel.
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To zoom horizontally around the mouse cursor position using the mouse wheel, press Ctrl/Cmd, point at a waveform, and use the mouse wheel.
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To zoom horizontally around the edit cursor position, press Ctrl/Cmd-Shift, point at a waveform, and use the mouse wheel.
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To zoom vertically using the mouse wheel, press Shift, point at a waveform, and use the mouse wheel.
Audio Editor Only
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To zoom vertically, in the wave window, position the mouse cursor over the level ruler, click, and drag left or right.
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To reset the vertical zoom to 0 dB, double-click the level ruler.
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To set the vertical zoom to the best value, that is, the current minimum and maximum displayed samples, make sure that the level ruler is set to 0 dB, and double-click the level ruler.