Adobe 65009626 User Guide - Page 50

Stretch time and shift pitch

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USING SOUNDBOOTH CS4 46 Editing and repairing audio files Appropriate frequency and sensitivity settings depend upon audio content. Experiment with different settings while viewing displayed beats in the Editor panel. Tempo-Based Detection Adjusts beat placement to better reflect rhythmic, musical patterns. Beats in the Editor panel To display beats as simple lines without orange semicircles, deselect Use Gradients in the Appearance preferences. (See "Change interface brightness and colors" on page 15.) Stretch time and shift pitch With time-stretching, you can perfectly fit voice-overs or other audio to the length of a video scene or web animation. Independently, you can apply pitch-shifting adjustments that range from subtle enhancements to extremely high or low effects. 1 In the Editor panel, select the desired audio. 2 Choose Processes > Change Pitch And Timing. 3 Drag the Time Stretch or Pitch Shift sliders to adjust processed audio relative to existing audio. (For example, to shrink audio to half its current duration, specify a Timestretch value of 50%.) The Current and New Duration values show length before and after time-stretching. If you need a specific length, change the New value. 4 To more accurately adjust a solo performance, select Solo Instrument Or Voice. 5 To adjust the timbre of instruments and voices, maintaining realism during pitch shifts, select Preserve Speech Characteristics. If realism isn't desirable (for example, if you want to exaggerate the sound of pitch shifts), deselect this option. 6 Click Preview, and adjust settings as needed. To compare processed and original audio, click the power button . 7 When you achieve the best-sounding results, click OK to process the audio file. See also "Select time ranges" on page 36 Updated 15 July 2009

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46
USING SOUNDBOOTH CS4
Editing and repairing audio files
Appropriate frequency and sensitivity settings depend upon audio content. Experiment with different settings
while viewing displayed beats in the Editor panel.
Tempo-Based Detection
Adjusts beat placement to better reflect rhythmic, musical patterns.
Beats in the Editor panel
To display beats as simple lines without orange semicircles, deselect Use Gradients in the Appearance preferences. (See
“
Change interface brightness and colors
” on page
15.)
Stretch time and shift pitch
With time-stretching, you can perfectly fit voice-overs or other audio to the length of a video scene or web animation.
Independently, you can apply pitch-shifting adjustments that range from subtle enhancements to extremely high or
low effects.
1
In the Editor panel, select the desired audio.
2
Choose Processes > Change Pitch And Timing.
3
Drag the Time Stretch or Pitch Shift sliders to adjust processed audio relative to existing audio. (For example, to
shrink audio to half its current duration, specify a Timestretch value of 50%.)
The Current and New Duration values show length before and after time-stretching. If you need a specific length,
change the New value.
4
To more accurately adjust a solo performance, select Solo Instrument Or Voice.
5
To adjust the timbre of instruments and voices, maintaining realism during pitch shifts, select Preserve Speech
Characteristics. If realism isn’t desirable (for example, if you want to exaggerate the sound of pitch shifts), deselect
this option.
6
Click Preview, and adjust settings as needed. To compare processed and original audio, click the power button
.
7
When you achieve the best-sounding results, click OK to process the audio file.
See also
“
Select time ranges
” on page
36
Updated 15 July 2009