Adobe AUDITION 1.5 User Manual page 94

CHAPTER 4
86
Editing Audio
• Waveform View (the default) displays a waveform as a series of positive and negative
peaks. The x-axis (horizontal ruler) represents time, and the y-axis (vertical ruler)
measures spikes, or increased amplitude, in a waveform."
• Spectral View displays a waveform by its frequency components, where the x-axis repre-
sents time and the y-axis (vertical ruler) measures frequency. This view lets you analyze
audio data to see which frequencies are most prevalent. The greater a signal's amplitude
component within a specific frequency range, the brighter the displayed color. Colors
range from dark blue (meaning that the frequencies are very low in amplitude) to bright
yellow (meaning that the frequencies are high in amplitude).
To switch between Waveform View and Spectral View:
Choose View > Waveform View or View > Spectral View. Alternatively, click the Toggle
Between Waveform And Spectral Views button
Adobe Audition lets you customize certain features of Waveform View and Spectral View.
For example, you can show or hide grid lines in Waveform View and change the resolution
in Spectral View. For more information, see "Display options" on page 50.
Changing the vertical scale
In Waveform View, the vertical ruler shows the decibel value of the audio data. However,
you can change the scale of the ruler to Sample Values, Normalized Values, or Percentage.
Note: In Spectral View, the vertical scale is always in hertz (Hz).
To change the scale of the vertical ruler:
Choose View > Vertical Scale Format, and choose the desired scale:
• Sample Values indicates amplitude as the data's exact sample value of the data.
• Normalized Values indicates amplitude on a normalized scale value that ranges from
– 1 to 1.
Percentage indicates amplitude on a percentage scale value that ranges from –100%
•
to 100%.
Decibels indicates amplitude using a decibel scale value that ranges from –Infinity to Zero.
•
Double-click the vertical ruler to cycle through the scales.
in the toolbar.