Apple Soundtrack Pro 3 - Manual (Page 228)

• Analysis Window pop-up menu: To display the audio file in Frequency Spectrum view,
part of the audio data for each given point in time is analyzed. Each method of analysis
represents a slightly different compromise between frequency resolution and spectral
leakage. You can choose between several different analysis methods, called analysis
windows, used to display the frequency spectrum in Frequency Spectrum view.
• Window Size pop-up menu: The number of samples used for Frequency Spectrum view.
This parameter trades off frequency resolution for time resolution. Smaller window
sizes are more accurate timewise, but smear frequency information across adjacent
frequencies (vertical lines, or transients, appear sharper). Larger window sizes provide
a more accurate frequency display, but will smear things horizontally (horizontal lines
appear sharper, but transients are smeared).
• Frequency Scale buttons: Use Frequency Scale to switch between linear display (in which
harmonics appear evenly spaced) and logarithmic display (in which octaves appear
evenly spaced).
• Color pop-up menu and gradient slider: Use the menu and slider to customize the gradient
for Frequency Spectrum view.
• Reset button: Resets all controls to their default values.
To open the Spectrum View HUD
1 Turn on Frequency Spectrum view.
2 Do one of the following:
• Choose View > File Editor Display > Show Spectrum Controls.
• Control-click the spectrum display, then choose Show Spectrum Controls from the
shortcut menu.
Adjusting the Frequency Spectrum View with the Shortcut Menu
You can also Control-click the Frequency Spectrum view to change the settings.
To show the frequency spectrum on a logarithmic scale
µ
Control-click the Sample ruler along the left edge of the display, then choose Logarithmic
from the shortcut menu.
To show the frequency spectrum on a linear scale
µ
Control-click the Sample ruler along the left edge of the display, then choose Linear from
the shortcut menu.
To display the audio file in Frequency Spectrum view, part of the audio data for each
given point in time is analyzed. Each method of analysis represents a slightly different
compromise between frequency resolution and spectral leakage. You can choose between
several different analysis methods, called analysis windows, used to display the frequency
spectrum in Frequency Spectrum view.
228 Chapter 8 Working in the File Editor