Adobe 22011292 User Manual - Page 54

Analyze frequency range, Frequency Analysis options

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USING ADOBE AUDITION 50 Editing audio files 2 Right-click the Phase Meter panel, and choose channels from the Channel and Compare To menus. 3 In Editor panel, select a range if desired, and start playback. In the Phase Meter, audio to the left is more out of phase, while audio to the right is more in phase. -1.0 reflects total phase cancellation, while 1.0 reflects identical audio content in each channel. To customize meter appearance, right-click them, and select Show Color Gradient or Show LED Meters. Analyze frequency range You can use the Frequency Analysis panel to identify problematic frequency bands, which you can then correct with a filter effect. 1 Choose Window > Frequency Analysis. 2 In the Editor panel, click a time point, select a range, or start playback. 3 In the Frequency Analysis panel, view frequency along the horizontal axis, and amplitude along the vertical axis. If you selected a range, Adobe Audition analyzes only the center point. To analyze the overall frequency of the range, click Scan Selection. Frequency Analysis options Scale Displays the frequency scale either logarithmically (reflecting human hearing) or linearly (providing more detail for upper frequencies). Copy All Graph Data Copies a text report of the frequency data to the system clipboard. Hold buttons Let you take up to eight frequency snapshots as a waveform is playing. The frequency outline (which is rendered in the same color as the button clicked) is frozen on the graph and overlaid on other frequency outlines. To clear a frozen frequency outline, click its corresponding Hold button again. Display Changes the graph display. Choose one of the following styles: • Lines Displays amplitude at each frequency with simple lines. By default, the left channel is green; the right is blue. • Area Also displays lines for amplitude, but fills the area beneath the lines in a solid color, and smooths out amplitude differences in the same area. • Bars Shows the effect of analysis resolution by splitting the display into rectangular segments. The higher the FFT size, the greater the analysis resolution, and the narrower the bars. Top Channel Determines which channel of a stereo or surround file appears over others in the graph. To combine displayed channels, choose Average. Scan or Scan Selection Scans the entire file or selection, and displays average frequency data in the graph. (By default, the graph displays data from the center point of files and selections.) Advanced options FFT Size Specifies the Fast Fourier Transform size. Higher FFT sizes report frequency data more accurately but they require longer processing times. Window Determines the Fast Fourier transform shape. These functions are listed in order from narrowest to widest. Narrower functions include fewer surrounding frequencies but less precisely reflect center frequencies. Wider functions include more surrounding frequencies but more precisely reflect center frequencies. The Hamming and Blackman options provide excellent overall results. Last updated 2/16/2012

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50
USING ADOBE AUDITION
Editing audio files
Last updated 2/16/2012
2
Right-click the Phase Meter panel, and choose channels from the Channel and Compare To menus.
3
In Editor panel, select a range if desired, and start playback.
In the Phase Meter, audio to the left is more out of phase, while audio to the right is more in phase. -1.0 reflects total
phase cancellation, while 1.0 reflects identical audio content in each channel.
To customize meter appearance, right-click them, and select Show Color Gradient or Show LED Meters.
Analyze frequency range
You can use the Frequency Analysis panel to identify problematic frequency bands, which you can then correct with
a filter effect.
1
Choose Window
> Frequency Analysis.
2
In the Editor panel, click a time point, select a range, or start playback.
3
In the Frequency Analysis panel, view frequency along the horizontal axis, and amplitude along the vertical axis.
If you selected a range, Adobe Audition analyzes only the center point. To analyze the overall frequency of the range,
click Scan Selection.
Frequency Analysis options
Scale
Displays the frequency scale either logarithmically (reflecting human hearing) or linearly (providing more detail
for upper frequencies).
Copy All Graph Data
Copies a text report of the frequency data to the system clipboard.
Hold buttons
Let you take up to eight frequency snapshots as a waveform is playing. The frequency outline (which is
rendered in the same color as the button clicked) is frozen on the graph and overlaid on other frequency outlines. To
clear a frozen frequency outline, click its corresponding Hold button again.
Display
Changes the graph display. Choose one of the following styles:
•
Lines
Displays amplitude at each frequency with simple lines. By default, the left channel is green; the right is blue.
•
Area
Also displays lines for amplitude, but fills the area beneath the lines in a solid color, and smooths out
amplitude differences in the same area.
•
Bars
Shows the effect of analysis resolution by splitting the display into rectangular segments. The higher the FFT
size, the greater the analysis resolution, and the narrower the bars.
Top Channel
Determines which channel of a stereo or surround file appears over others in the graph. To combine
displayed channels, choose Average.
Scan or Scan Selection
Scans the entire file or selection, and displays average frequency data in the graph. (By default,
the graph displays data from the center point of files and selections.)
Advanced options
FFT Size
Specifies the Fast Fourier Transform size. Higher FFT sizes report frequency data more accurately but they
require longer processing times.
Window
Determines the Fast Fourier transform shape. These functions are listed in order from narrowest to widest.
Narrower functions include fewer surrounding frequencies but less precisely reflect center frequencies. Wider
functions include more surrounding frequencies but more precisely reflect center frequencies. The Hamming and
Blackman options provide excellent overall results.