FFT size
Monitor: Output

252

Right-click the sonogram and choose Show Position from the shortcut menu to toggle the display of ToolTips. The setting for each sonogram in a stereo file is independent.

If you want to display the nearest musical note equivalent of the cursor position in a ToolTip, right-click the sonogram and choose Show Notes from the shortcut menu:

Use the cursor to display musical note equivalent

Right-click the Spectrum Analysis window and choose Show Statistics from the shortcut menu to toggle the display of the Statistics area at the bottom of the Spectrum Analysis window.

Updating a sonogram

A sonogram updates in the same method as a spectrum graph. For more information, see Updating a spectrum graph on page 249.

Monitoring an input and output source

Click the Real Time Monitoring button () to turn real-time spectrum analysis on or off. Click the down arrow next to the button and choose Monitor: Input to monitor the device selected in the Record drop-down list on the Wave tab of the Preferences dialog (to access the Preferences dialog, choose Preferences from the Options menu).

Real-time output monitoring is not available in sonogram display mode. When you click the down arrow

next to the button and choosefrom the menu, a cursor is displayed in the sonogram to indicate the play position.

Tuning a sonogram

It is frequently necessary to experiment with the control parameters in the Spectrum Settings dialog to produce the best possible sonogram. For more information, see Adjusting Spectrum Analysis settings on page 253.

Improving the graph’s contrast

To improve the contrast of the sonogram, decrease the frequency and amplitude ranges as much as possible.

Smoothing the graph’s display

If the graph appears too pixelated, raise the Set sonogram resolution value to 200.

Improving the frequency resolution

For greater frequency resolution, choose a higher value from the FFT size drop-down list.

Reducing the processing time

To reduce processing time, decrease the Set sonogram resolution value and/or choose a lower value from the drop-down list.

USING SPECTRUM ANALYSIS

CHP. 17