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filterType=0, Simple pass through with unity gain.
filterType=1, Linear gainGain in dB. [gain].
filterType=2, 1st order Butterworth low pass filter. [freq].
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Code Block |
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typedef struct _ModuleSecondOrderFilterSmoothedCascadeV2 { ModuleInstanceDescriptor instance; // Common Audio Weaver module instance structure INT32 numStages; // Number of cascaded stages of the second order filter. FLOAT32 smoothingTime; // Time constant of the smoothing process. INT32 updateActive; // Specifies whether the filter coefficients are updating (=1) or fixed (=0). FLOAT32 smoothingCoeff; // Smoothing coefficient. This is computed based on the smoothingTime, sample rate, and block size of the module. INT32 bulkParamsUpdate; // State variable to handle bulk changes in parameters. INT32* filterType; // Selects the type of filter that is implemented by the module: Bypass=0, Gain=1, Butter1stLPF=2, Butter2ndLPF=3, Butter1stHPF=4, Butter2ndHPF=5, Allpass1st=6, Allpass2nd=7, Shelf2ndLow=8, Shelf2ndLowQ=9, Shelf2ndHigh=10, Shelf2ndHighQ=11, PeakEQ=12, Notch=13, Bandpass=14, Bessel1stLPF=15, Bessel1stHPF=16, AsymShelf1stLow=17, AsymShelf1stHigh=18, SymShelf1stLow=19, SymShelf1stHigh=20, VariableQLPF=21, VariableQHPF=22 Resonant=23. FLOAT32* freq; // Cutoff frequency of the filter, in Hz. FLOAT32* gain; // Amount of boost or cut to apply, in dB if applicable. FLOAT32* Q; // Specifies the Q of the filter, if applicable. FLOAT32* targetCoeffs; // Matrix of filter target coefficients. The size of the matrix is 5 x numStages. Each column contains the variables for a biquad arranged as [b0; b1; b2; a1; a2]. FLOAT32* currentCoeffs; // Matrix of filter current coefficients. The size of the matrix is 5 x numStages. Each column contains the variables for a biquad arranged as [b0; b1; b2; a1; a2]. FLOAT32* state; // State variables. 2*numChannels per section. void * hardware_specific_struct_pointer; // This is the internal array used for ADI IIR accelerator. Size is determined internally } ModuleSecondOrderFilterSmoothedCascadeV2Class; |
Variables
Properties
Name | Type | Usage | isHidden | Default value | Range | Units |
numStages | int | const | 0 | 2 | 1:1:32 | |
smoothingTime | float | parameter | 0 | 10 | 0:1:1000 | msec |
updateActive | int | parameter | 1 | 1 | 0:1 | |
smoothingCoeff | float | derived | 1 | 0.06449 | Unrestricted | |
bulkParamsUpdate | int | state | 1 | 0 | Unrestricted | |
filterType | int* | parameter | 0 | [1 x 2] | 0:23 | |
freq | float* | parameter | 0 | [1 x 2] | 10:0.1:23990 | Hz |
gain | float* | parameter | 0 | [1 x 2] | -24:0.1:24 | dB |
Q | float* | parameter | 0 | [1 x 2] | 0:0.1:20 | |
targetCoeffs | float* | derived | 0 | [5 x 2] | Unrestricted | |
currentCoeffs | float* | state | 0 | [5 x 2] | Unrestricted | |
state | float* | state | 1 | [2 x 2] | Unrestricted | |
hardware_specific_struct_pointer | void * | state | 1 | Unrestricted |
Pins
Input Pins
Name: in
Description: audio input
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