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3. Click the Off button
4. Set the cut-off frequency.
5. Select the HPF low-cut algorithm type (or select None):
Bessel – A linear filter with maximum linear phase response. It is often used in audio
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crossover systems.
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Link R (Linkwitz-Riley) – An Infinite Impulse Response (IIR) filter used in audio
crossovers. Consists of a parallel combination of low-pass and high-pass. The filters
are usually designed by cascading two Butterworth filters, each of which has a -3dB
gain at the cut-off frequency. The resulting Link-R filter has a -6dB gain at the cut-off
frequency.
Butter (Butterworth) –
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the passband.
6. Select the HPF slope (24, 18, 12 or 6dB/Oct) – set the filter drop-off per octave from the
filter frequency.
HPF parameters are adjusted.
AFM-20DSP – Processing Audio Signals
. The HPF module turns on
Figure 29: Processing View – HPF Module
Designed to have a frequency response as flat as possible in
Kramer Electronics Ltd.
.
29
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