From the Edit menu, choose Tool, and then choose Magnify from the submenu (or click the Magnify Tool button on the toolbar) to select the Magnify tool.

Use the Magnify tool to zoom in to a region without losing your selection. Drag the mouse over an area to zoom in. A dotted rectangle is drawn around the area and will magnify the area when the mouse button is released.

While holding the left mouse button, click the right mouse button to toggle through the three magnification modes:

• Zoom Time only: magnifies horizontally without changing the vertical level of the data window.

• Zoom Level only: magnifies vertically without changing horizontal zoom level of the data window.

• Time/Zoom Level: magnifies horizontally and vertically.

Zooming incrementally

To zoom in and out in time by small increments, press the Up Arrow/Down Arrow keys or use the Zoom buttons on the lower right-hand side of the data window:

Zooming in fully

From the View menu, choose Zoom Time, and then choose In Full from the submenu (or press Ctrl+Up Arrow) to maximize the horizontal magnification to 24:1 (24 pixels per sample).

Zooming out fully

From the View menu, choose Zoom Time, and then choose Out Full from the submenu (or press Ctrl+Down Arrow) to zoom out to the lowest magnification so that the entire sound file will fit on the screen.

Zooming incrementally

To zoom in and out vertically by small increments, click the Level Zoom In/Out buttons, or click and drag the area between the buttons to zoom quickly.

Zooming out fully

From the View menu, choose Zoom Level, and then choose Out Full from the submenu to zoom out vertically to allow viewing of the entire amplitude range. This command also centers the centerline.

Zooming to fit the waveform to the window

From the View menu, choose Zoom Level, and then choose Window from the submenu to zoom in or out vertically to the maximum zoom ratio that allows you to view the entire waveform. This command also moves the centerline if the maximum positive and negative peaks are different.

From the View menu, choose Zoom Time or Zoom Level, and then choose Selection from the submenu to maximize the current selection vertically and horizontally.

The Selection command calculates the maximum zoom factor for the size of a selection area, draws the data at this zoom factor, and centers the selection in the data window.

TIP Press Ctrl+Up Arrow (when a selection is active) or double-click the Level Ruler.

When using the Event tool , you can zoom to the selected event.

Right-click the event and choose Zoom Event from the shortcut menu (or press Ctrl+Up Arrow). The event is zoomed to fit the width of the data window.

From the View menu, choose Zoom Time, and then choose Normal from the submenu to zoom out to the default zoom ratio. If the entire sound file can fit in the window at a closer magnification, zoom normal will only zoom out to that ratio.

To change the default for the Normal zoom ratio, go to the Display tab in the Preferences dialog.

You can define two custom zoom ratios to quickly adjust your magnification to frequently used settings.

Defining custom zoom ratios

1. From the Options menu, choose Preferences.

2. Select the Display tab.

3. Choose the zoom ratios you want to use from the Custom zoom ratio 1 and Custom zoom ratio 2 drop-down lists.

Displaying custom zoom ratios

Perform any of the following actions to display your custom zoom ratios:

• Click the Custom Zoom 1 or Custom Zoom 2 button on the Navigation toolbar.

• Press 1 or 2 on your numeric keypad.

• From the View menu, choose Zoom Time, and then choose a Custom Zoom command from the submenu.

• Right-click in a data window, choose Zoom from the shortcut menu, and then choose a Custom Zoom command from the submenu.