miniDSP Ltd, Hong Kong /
/ Features and specifications subject to change without prior notice
36
8.9.5
Converting PEQ to FIR
Generating an FIR filter is a sophisticated operation. Since FIR filters cannot be changed in real time for
subjective auditioning, one approach is to use PEQ to first figure out the headphone correction, then convert the
PEQ settings to an FIR. If desired, additional phase compensation can be implemented at the same time.
For an example, we will use the same EQ shown on page 29. In
, use the Paragraphic Gain EQ feature:
1.
Set filter bank 01 to proportional Q, minimum phase:
2.
Enter the parameters for each PEAK type filter:
3.
If you have LOW_SHELF or HIGH_SHELF filters, set an additional bank or banks of filters to
type “
shelving
low
” and “shelving high
,
”
minimum phase. For example:
4.
Set the number of taps that you have allocated to your filter banks (the other parameters shown here
can be left at the defaults):
