This command sets or queries all of the parameters for the parametric equalizer (EQ) filters on input
channels 1-4, A-D, and T . Each channel has five bands of parametric EQ that can be independently
controlled.
The input parametric EQ filter parameters can be set individually via the
PEQIT, PEQIF, PEQIB, PEQIG,
PEQIS, and PEQIE commands. The output parametric EQ filter parameters can be set simultaneously via the
PEQOA command or individually with the PEQOT, PEQOF, PEQOB, PEQOG, PEQOS, and PEQOE commands.
When using this command, you must specify all of the following parameters.
Description Value Range Units
Channel 1-4, A-D, T N/A
Band 1-5 N/A
Filter Type 1-5
1 = parametric filter
2 = low shelf
3 = high shelf
4 = lowpass
5 = highpass
6 = Linkwitz-Riley lowpass
7 = Linkwitz-Riley highpass
Frequency 20 - 20000 Hz
Bandwidth 5 - 200 1/100th octave
Gain -20 - 20 dB
Slope
1 - 1.2 * Gain for shelving filters, 12 or 24 for Linkwitz-Riley
filters
dB per octave
Enable 0 - 1
0 = filter disabled
1 = filter enabled
The paramters are specified in the order shown and are separated by commas. The wildcard character, *,
may not be used for any of the parameters listed above. If an attempt is made to set one of the parameters
outside the valid range, the command will fail and return an error message of ERROR#002.
Not all of the parameters are valid for each of the filter types. The following table shows which parameters
are used in each of the filter types.
Filter Type Bandwidth Frequency Gain Slope
Parametric (1) Yes Yes Yes No
Low Shelf (2) No Yes Yes Yes
High Shelf (3) No Yes Yes Yes
Lowpass (4) No Yes No No
Highpass (5) No Yes No No
Linkwitz-Riley Lowpass (6) No Yes No Yes
Linkwitz-Riley Highpass (7) No Yes No Yes
When a parameter is invalid for a given filter type, the parametric EQ commands will still set that parameter,
however its value will not be used for filter computations. This valid/invalid parameter information above is
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