9

Table Of Contents
Logic Express includes a bundle of specialized effects and utilities designed to address
tasks often encountered during audio production. As examples of where these processors
can help: Denoiser eliminates or reduces noise below a threshold level. Enhance Timing
enhances the timing of audio recordings. Exciter can add life to your recordings by
generating artificial high frequency components. Grooveshifter enabes you to create
rhythmic variations in your recordings. SubBass generates an artificial bass signal that is
derived from the incoming signal.
This chapter covers the following:
Denoiser (p. 181)
Enhance Timing (p. 183)
Exciter (p. 184)
Grooveshifter (p. 185)
Speech Enhancer (p. 187)
SubBass (p. 188)
Denoiser
The Denoiser eliminates or reduces any noise below a threshold volume level. The Denoiser
uses fast Fourier transform (FFT) analysis to recognize frequency bands of lower volume
and less complex harmonic structure. It then reduces these low-level, less complex bands
to the appropriate dB level. See Denoiser Main Parameters.
If you use the Denoiser too aggressively, however, the algorithm produces artifacts, which
are usually less desirable than the existing noise. If using the Denoiser produces these
artifacts, you can use the three Smoothing knobs to reduce or eliminate them. See Denoiser
Smoothing Parameters.
To use the Denoiser
1 Locate a section of the audio where only noise is audible, and set the Threshold value so
that only signals at, or below, this level are filtered out.
181
Specialized Effects and Utilities
12