#include <Butterworth.h>
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void | setup (double sampleRate, double cutoffFrequency, double gainDb) |
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void | setup (int reqOrder, double sampleRate, double cutoffFrequency, double gainDb) |
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void | setupN (double cutoffFrequency, double gainDb) |
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void | setupN (int reqOrder, double cutoffFrequency, double gainDb) |
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void | reset () |
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void | setup (const double(&sosCoefficients)[MaxStages][6]) |
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Sample | filter (const Sample in) |
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const Cascade::Storage | getCascadeStorage () |
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template<int FilterOrder = 4, class StateType = DirectFormII>
struct Iir::Butterworth::LowShelf< FilterOrder, StateType >
Butterworth low shelf filter: below the cutoff it has a specified gain and above the cutoff the gain is 0 dB.
- Parameters
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FilterOrder | Reserves memory for a filter of the order FilterOrder |
StateType | The filter topology: DirectFormI, DirectFormII, ... |
◆ setup() [1/2]
template<int FilterOrder = 4, class StateType = DirectFormII>
Calculates the coefficients with the filter order provided by the instantiation
- Parameters
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sampleRate | Sampling rate |
cutoffFrequency | Cutoff |
gainDb | Gain in dB of the filter in the passband |
◆ setup() [2/2]
template<int FilterOrder = 4, class StateType = DirectFormII>
void Iir::Butterworth::LowShelf< FilterOrder, StateType >::setup |
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int |
reqOrder, |
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double |
sampleRate, |
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double |
cutoffFrequency, |
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double |
gainDb |
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inline |
Calculates the coefficients
- Parameters
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reqOrder | The actual order which can be less than the instantiated one |
sampleRate | Sampling rate |
cutoffFrequency | Cutoff |
gainDb | Gain in dB of the filter in the passband |
◆ setupN() [1/2]
template<int FilterOrder = 4, class StateType = DirectFormII>
Calculates the coefficients with the filter order provided by the instantiation
- Parameters
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cutoffFrequency | Normalised cutoff frequency (0..1/2) |
gainDb | Gain in dB of the filter in the passband |
◆ setupN() [2/2]
template<int FilterOrder = 4, class StateType = DirectFormII>
Calculates the coefficients
- Parameters
-
reqOrder | The actual order which can be less than the instantiated one |
cutoffFrequency | Normalised cutoff frequency (0..1/2) |
gainDb | Gain in dB of the filter in the passband |
The documentation for this struct was generated from the following file: