miniDSP Flex - Page 70

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Band Pass Filter (Low+High)
Frequency (Hz)
Output Level (dB)
20,000
10,000
5,000
2,000
1000
500
100
50
20
10
-20
5
0
-5
-10
-15
-30
-25
Output 1
Output 2
Output 3
Output 4
Output 5
Output 6
Output 7
Output 8
200
Click to hide
channels
The crossover settings of channels 1, 2 and 3 can be changed by using the channel selection buttons at the top of the
window to jump between them. As long as you stay on these channels, the set of hidden channels stays the same.
However, if you switch to a hidden channel, that channel then becomes visible. (For example, if you switch to channel
6, then channels 1, 2, 3 and 6 will be visible.)
Advanced mode
The crossover block on each output channel has eight biquads. In Basic mode, four are allocated to the high pass lter
and four to the low pass lter. In Advanced mode, however, the eight biquads are all specied by their coecients, in
the following format:
These biquads can be used for almost innite exibility (within the limits of eight biquads). For example, you could use
two biquads for a fourth-order high pass lter, and the remaining six for parametric EQ.
biquad1,
b0=0.998191200483864,
b1=-1.9950521500467384,
b2=0.996920046761057,
a1=1.9950521500467384,
a2=-0.9951112472449212,
biquad2,
b0=0.999640139948623,
b1=-1.9981670485581222,
b2=0.9985489719847982,
a1=1.9981670485581222,
a2=-0.9981891119334211,
biquad3,
..
biquad4,
..
biquad8,
b0=1.0010192374642126,
b1=-1.9950555192569264,
b2=0.9940580112181501,
a1=1.995060938714333,
a2=-0.9950718292249559