2
Version 1.20 Addendum
MULTI-BAND COMPRESSOR/EXPANDER
Included in V1.20 is a multi-band compressor/expander (MBCX) that can be used to improve stereo mixes.
The algorithm used is identical to that released in our QuadComp VST plug-in.
Whilst it is possible to use an ordinary compressor for tightening up and adding punch to a stereo mix, it is
very common that low frequencies can cause ‘pumping’ effects on the overall signal. Alternatively, high
frequency sounds such as cymbal smashes can have an adverse affect on the overall sound. However, by
splitting the signal into four different frequency bands, each frequency can be separately processed.
This is achieved on the QUADCOMP using a series of crossover filters. These filters are constructed as
linear phase FIR filters in order to produce a signal path that is perfectly free of phase errors.
The Multi-Band Compressor/Expander (MBCX) window looks like this:
The first page allows you to set the crossover frequencies for each of the bands. These are set in the
various “XOVER”’ fields. The frequencies available are 50Hz, 80Hz, 125Hz, 200Hz, 320Hz, 500Hz, 800Hz,
1.25kHz, 2kHz, 3.2kHz, 5.0kHz, 8kHz and 12kHz.
NOTE: One frequency cannot be set higher or lower than the adjacent band. For example if the MF
XOVER is set to 800Hz as shown above, LF cannot be set higher than that and you will be able to set
50Hz, 80Hz, 125Hz, 200Hz, 320Hz, 500Hz for the LF. Similarly, in this example, the MF XOVER
cannot be set lower than 200Hz.
The four frequency bands also have a variable slope and these can be set to 6dB, 12dB, 18dB and 24dB
per octave.
The MBCX has a series of presets that can be selected using F5. In the preset page, you can store your
own presets if you want.
It is possible to bypass the MBCX using F6.
To Next Page
Loading...
Need help?
General
