dsp::BiQuad Struct Reference

Transposed form 2 Bi-Quad construct for FIR/IIR filters. More...

#include <biquad.hpp>

Classes
struct	Coeffs
	Filter coefficients. More...

Public Types
typedef struct dsp::BiQuad::Coeffs	Coeffs
	Filter coefficients.

Public Member Functions
	BiQuad (void)
	Default constructor.
void	flush (void)
	Flush internal delays.
float	process_so (const float xn)
	Second order processing of one sample. More...
float	process_fo (const float xn)
	First order processing of one sample. More...
float	process (const float xn)
	Default processing function (second order) More...

Public Attributes
Coeffs	mCoeffs
	Coefficients for the Bi-Quad construct.
float	mZ1
float	mZ2

Detailed Description

Transposed form 2 Bi-Quad construct for FIR/IIR filters.

Definition at line 54 of file biquad.hpp.

Member Function Documentation

process()

float dsp::BiQuad::process ( const float  xn )

inline

Default processing function (second order)

Parameters

xn	Input sample

Returns

Output sample

Definition at line 399 of file biquad.hpp.

                                  {
      return process_so(xn);
    }

process_fo()

float dsp::BiQuad::process_fo ( const float  xn )

inline

First order processing of one sample.

Parameters

xn	Input sample

Returns

Output sample

Definition at line 384 of file biquad.hpp.

                                     {
      float acc = mCoeffs.ff0 * xn + mZ1;
      mZ1 = mCoeffs.ff1 * xn;
      mZ1 -= mCoeffs.fb1 * acc;
      return acc;
    }

process_so()

float dsp::BiQuad::process_so ( const float  xn )

inline

Second order processing of one sample.

Parameters

xn	Input sample

Returns

Output sample

Definition at line 367 of file biquad.hpp.

                                     {
      float acc = mCoeffs.ff0 * xn + mZ1;
      mZ1 = mCoeffs.ff1 * xn + mZ2;
      mZ2 = mCoeffs.ff2 * xn;
      mZ1 -= mCoeffs.fb1 * acc;
      mZ2 -= mCoeffs.fb2 * acc;
      return acc;
    }

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The documentation for this struct was generated from the following file:

• /home/etienne/Documents/_projects/logue-sdk/logue-sdk-alt/platform/nutekt-digital/inc/dsp/biquad.hpp