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User manual for MERUS™ audio amplifier configurator
MA2304DNS/MA2304PNS
DSP audio blocks
5
DSP audio blocks
This section explains each of the DSP flow audio blocks available in detail.
5.1
Biquad block
Figure 41
Biquad block
The biquad audio block is a generic second-order IIR filter for high-pass, low-pass, parametric EQ (peaking),
notch, shelf and custom filters. Parameters such as quality factor, corner frequency and gain can be adjusted. A
typical DSP flow has multiple of these biquad blocks interconnected in cascade.
Double-clicking a biquad block opens a biquad configuration window, as shown below:
Figure 42
Biquad configuration window
Each biquad filter option has its own parameters to choose from. For example, a low-pass filter has the option
to select the filter subtype and its cut-off frequency, while a notch filter has the option to select its frequency
and Q-value.
For all biquad filter options, except bypass and custom, there is the option to invert the phase for that
particular biquad using the "invert phase" control:
User Manual
29
V 1.1
2022-09-12
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