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Adjusting and Verifying Audio with DSP
22
Instruction Manual – BCS Basic Control Structure Protocol
Adjusting Equalization Bands
BCS commands can be used to adjust the gain of each EQ band for each output to a specific decibel
level. Each equalization band is identified by its center frequency and spans one octave (see the chart
below for frequency to band number correspondence). The bands are set for a flat response at the factory.
The adjustment range is -12 dB to +12 dB.
Multiple bands can be entered in the same command by including spaces or commas between the
EQ band numbers. When adjusting multiple bands in the same command, an “
E
” and a list of the bands
is entered first, followed by a “
G
” and a list of the corresponding gain settings. The number of gain
settings must be equal to the number of bands.
To adjust equalization bands for an output:
1.
Enter the following command string. Replace the “
#
”s with the output number(s) and equalization
band number(s) and replace the “
^^^
” with the decibel level.
CO#E#G^^^T
Equalization Bands Example (with visual representation below)
EQ Band Frequency
32 Hz 64 Hz 125 Hz 250 Hz 500 Hz 1 kHz 2 kHz 4 kHz 8 kHz 16 kHz
EQ Band (BCS)
Number
1
2
3
4
5
6
7
8
9
10
BCS Command
Action
CO3E2 5 6 7 9G80 10 -60 40 60T
Adjusts the gain of EQ band 2 to 8 dB, band 5 to 1 dB,
band 6 to -6 dB, band 7 to 4 dB, and band 9 to 6 dB for
Output 3
FIG. 1
Visual representation of equalizing output example