Polycom SR12 Speaker System User Manual


 
Customizing SoundStructure Designs
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following table.
These band edges are exactly between the center frequencies. At the band
edges, the gain of the equalizer band is half the gain (in dB) at the center fre-
quency. Adjacent bands in the graphic equalizer bleed over into each other
and affect each others' total gain which can increase the amount of time a user
must spend adjusting the equalizer to arrive at a desired frequency response.
The graphic equalizer provides a gain compensation control that corrects the
gain settings of each band to provide the desired gain specified by the user at
each center frequency.
Delay
The delay processing allows the designer to add from 0 to 1000 milliseconds of
delay on the output channels. While the delay is set in milliseconds in the user
interface, it can be manually set through the command API in samples where
each sample represents 1/48 of a millisecond.
Center Freq (Hz) 1 octave band 2/3 octave band 1/3 octave band
20 0
25 0 1
32 0 2
40 1 3
50 4
63 1 2 5
80 6
100 3 7
125 2 8
160 4 9
200 10
250 3 5 11
315 12
400 6 13
500 4 14
630 7 15
800 16
1,000 5 8 17
1,250 18
1,600 9 19
2,000 6 20
2,500 10 21
3,150 22
4,000 7 11 23
5,000 24
6,300 12 25
8,000 8 26
10,000 13 27
12,500 28
16,000 9 14 29
20,000 30