typedef struct _ModuleSbKalmanAEC3RefV1
{
    ModuleInstanceDescriptor instance;            // Common Audio Weaver module instance structure
    INT32 maxTaps;                                // Maximum length of the filter
    INT32 numTaps;                                // Current length of the filter
    FLOAT32 V;                                    // Adaptation constant
    FLOAT32 smoothingTime;                        // Time constant of the smoothing process.
    FLOAT32 A;                                    // Smoothing factor
    FLOAT32 p0;                                   // Starting value for covariance estimate
    INT32 enableRNS;                              // Enable residual noise suppression
    INT32 firstRun;                               // First run for setting P from p0 on startup
    FLOAT32 FFTSize;                              // FFT Size used for WOLA (WOLA numBins)
    INT32 stateIndex;                             // Circular buffer index. [0 numTaps-1]
    INT32 logicInputsEnabled;                     // track if reset input pins are enabled
    INT32 enableW2Output;                         // tracker for rns weight output enable
    INT32 enableWOutput;                          // tracker for aec weight output enable
    INT32 enablePVOutput;                         // tracker for rns weight output enable
    INT32 scratchIndex;                           // tracker for which pin scratch is on
    INT32 RNS_numPoints;                          // Number of values in the lookup table. The total table size is [maxPoints 2].
    INT32 RNS_order;                              // Order of the interpolation. This can be either 2 (for linear) or 4 (for pchip).
    FLOAT32* WW1;                                 // Adaptive filter coefficients.
    FLOAT32* P;                                   // Real estimation error covariance matrix.
    FLOAT32* PXTerm;                              // Estimation error covariance matrix - the off-diagonal terms.
    FLOAT32* CC;                                  // Complex state variables (previous inputs).
    FLOAT32* corrC;                               // Stores all the correlation between reference signals per bin and tap - diagonal part. Real number.
    FLOAT32* corrCXTerm;                          // Correlation between ref channels - the off-diagonal terms.
    FLOAT32* W2;                                  // Residual noise suppression weights.
    FLOAT32* RNS_table;                           // Lookup table. The first row is the X values and the second row is the Y values.
    FLOAT32* RNS_polyCoeffs;                      // Interpolation coefficients returned by the grid control.
} ModuleSbKalmanAEC3RefV1Class;