Technical data

DOC-01-TELAS-CRG-4 ASTi ACE Studio Components Reference Guide Rev.M
118 Copyright © 2014 Advanced Simulation Technology inc.
7.4. MultiFilter
Summary: Expanded version of the Audio/Filter component. The MultiFilter has a
variety of basic filter types and the ability to specify the filter order.
Description: A signal is filtered by one of the basic filter types described below.
Off: No filtering occurs. OutGain affects OutSignal amplitude.
LowPass: Basic LowPass filter; frequency content below the specified frequency is
passed through and content above is attenuated.
HighPass: Basic HighPass filter; frequency content below the specified frequency
is attenuated and content above is passed through.
BandPass: Basic BandPass filter; frequency content ranging from StartBand to
EndBand is passed through, content outside of this range is attenuated.
BandPassUnityGain: Same as the BandPass filter except that the amplitude of the
BandPassFilter is scaled by 1/QFactor resulting in a 0 dB peak gain, whereas the
normal BandPassFilter has a peak gain of Q.
Notch: Basic Notch filter; frequency content at the specified frequency is
attenuated.
AllPass: Basic AllPass filter; no frequency is attenuated.
PeakingEQ: Basic Peak filter; frequency content near the specified frequency is
boosted or attenuated by the Gain_dB control.
LowShelf: Basic LowShelf filter; frequency content below the specified frequency
is boosted or attenuated by the Gain_dB control.
HighShelf: Basic HighShelf filter; frequency content above the specified frequency
is boosted or attenuated by the Gain_dB control.
If the filter is not ‘Enabled’ the incoming InSignal is passed through unprocessed
but potentially modified by the OutGain control. Ensure OutGain results in 1.0 and
Enable or FilterType results in False or Off, respectively, for a true bypass of the
component.
Audio Inputs
InSignal
Type Default Value
audio n/a
Description: The signal to be filtered. This input should be linked
into the component from somewhere else in the model.
Control Inputs
Enable
Type Default Value
boolean True
Description: This control determines if the signal is filtered. If this
control results in False the signal is not filtered but the OutGain
control is still applied.
Modifier: XOR
Modifier_default: False
Frequency
Type Default Value
float32 1.0
Description: This control specifies frequency in Hertz. For the
BandPass, BandPassUnityGain, and PeakingEQ filters this control
specifies the center frequency of the passband. For the Notch filter
this control specifies the center frequency of the stopband. For the
LowPass and HighPass filters this control specifies the corner (-3
dB) frequency. For the LowShelf and HighShelf filters this control
specifies the midpoint frequency. The range of this control is [20,
24000).
Modifier: Multiply
Modifier_default: 500