Apple Logic Express 7 - Manual (Page 23)

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Equalizer
This chapter covers all Logic equalization effects.
Equalizers allow you to increase or decrease the level of
selected components in the overall audio spectrum.
Logic’s built-in equalizers include the Channel EQ, Silver EQ, DJ EQ, High/Low Pass
Filters, High/Low Cut EQ, Parametric EQ and High/Low Shelving EQ plug-ins.
Channel EQ
The extremely high-quality Channel EQ offers four frequency bands.
EQ Parameters
The Band Type buttons above the display activate the Channel EQ’s bands individually;
inactive bands do not use any computer resources.
Band 1 is a lowpass filter and band 4 is a highpass filter.
Note: The Q-parameter of band 1 and band 4 will have no effect when using a slope of
6 dB/Oct.
Bands 2 and3 are bandpass filters.