Class daisysp::NlFilt¶

ClassList > daisysp > NlFilt

Public Functions¶

Type	Name
void	Init ()
void	ProcessBlock (float * in, float * out, size_t size)
void	SetA (float a)
void	SetB (float b)
void	SetC (float C)
void	SetCoefficients (float a, float b, float d, float C, float L)
void	SetD (float d)
void	SetL (float L)

Non-linear filter The four 5-coefficients: a, b, d, C, and L are used to configure different filter types.

Structure for Dobson/Fitch nonlinear filter

Revised Formula from Risto Holopainen 12 Mar 2004

Y{n} =tanh(a Y{n-1} + b Y{n-2} + d Y^2{n-L} + X{n} - C)

Though traditional filter types can be made, the effect will always respond differently to different input.

void daisysp::NlFilt::Init ()

Initializes the NlFilt object.

void daisysp::NlFilt::ProcessBlock (
    float * in,
    float * out,
    size_t size
)

Process the array pointed to by *in and updates the output to *out; This works on a block of audio at once, the size of which is set with the size.

inline void daisysp::NlFilt::SetA (
    float a
)

Set Coefficient a

inline void daisysp::NlFilt::SetB (
    float b
)

Set Coefficient b

inline void daisysp::NlFilt::SetC (
    float C
)

Set Coefficient C

inline void daisysp::NlFilt::SetCoefficients (
    float a,
    float b,
    float d,
    float C,
    float L
)

inputs these are the five coefficients for the filter.

inline void daisysp::NlFilt::SetD (
    float d
)

Set Coefficient d

inline void daisysp::NlFilt::SetL (
    float L
)

Set Coefficient L

The documentation for this class was generated from the following file external-docs/DaisySP/DaisySP-LGPL/Source/Filters/nlfilt.h