Adobe AUDITION 1.5 User Manual page 138

CHAPTER 5
130
Enhancing and Restoring Audio
To use the Dynamic EQ effect:
1 Select an audio range (Edit View) or track (Multitrack View).
In the Effects tab of the Organizer window, expand Filters, and double-click Dynamic EQ.
2
Set the desired options.
3
Using the FFT Filter effect (Edit View only)
The graphic nature of the FFT (Fast Fourier Transform) Filter effect makes it easy to draw
curves or notches that reject or boost specific frequencies. This effect can produce broad
band-pass filters such as high- and low-pass filters (to maintain high and low frequencies,
respectively), narrow band-pass filters (to simulate the sound of a telephone call), or notch
filters (to eliminate very narrow frequency bands). The noise level of the FFT Filter effect
is lower than that of 16-bit samples, so it introduces no noise when processing audio at
16-bit resolution or lower.
FFT Filter graph (De-Esser preset)
produce better results than processing at lower resolutions, especially if you perform more than
one transform on the audio.
Dynamic EQ is especially effective as a real-time effect in Multitrack View, where you
can use clip envelopes to adjust the Gain, Frequency, and Q parameters.
For more information, search for "Dynamic EQ options" in Help.
For optimal results, filter 32-bit samples. If the source audio is 8-bit or 16-bit, convert
it to 32-bit first, and after you filter it, convert it back to 8-bit with dithering. You'll