Adobe 22011292 - Audition - PC Using Instruction page 91

USING ADOBE AUDITION
Effects reference
The real-time restoration effects above, which are available in both the Waveform and Multitrack editors, quickly
address common audio problems. For unusually noisy audio, however, consider using offline, process effects unique
to the Waveform Editor, such as Hiss Reduction and Noise Reduction.
A
Selecting various types of noise in Spectral Display
A. Hiss B. Crackle C. Rumble
More Help topics
"About the spectral display" on page 36
"Edit audio clips from Adobe Premiere Pro CS5.5 or After
Noise Reduction effect (Waveform Editor only)
The Noise Reduction/Restoration > Noise Reduction effect dramatically reduces background and broadband noise
with a minimal reduction in signal quality. This effect can remove a combination of noise, including tape hiss,
microphone background noise, power-line hum, or any noise that is constant throughout a waveform.
The proper amount of noise reduction depends upon the type of background noise and the acceptable loss in quality
for the remaining signal. In general, you can increase the signal-to-noise ratio by 5 to 20 dB and retain high audio
quality.
To achieve the best results with the Noise Reduction effect, apply it to audio with no DC offset. With a DC offset, this
effect may introduce clicks in quiet passages. (To remove a DC offset, choose Favorites > Repair DC Offset.)
A
B
Evaluating and adjusting noise with the Noise Reduction graph:
A. Drag control points to vary reduction in different frequency ranges B. Low amplitude noise. C. High amplitude noise D. Threshold below
which noise reduction occurs.
B
Effects" on page 128
C
D
Last updated 2/16/2012
C
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