FIRFilter< N, T > Class Template Reference

#include <Filters/FIRFilter.hpp>

Detailed Description

template<uint8_t N, class T = float>
class FIRFilter< N, T >

Finite Impulse Response filter implementation.

Implements the following difference equation:

\[ y[n] = \sum_{i=0}^{N-1} b_i \cdot x[n-i] \]

Definition at line 18 of file FIRFilter.hpp.

Collaboration diagram for FIRFilter< N, T >:

Public Member Functions
	FIRFilter (const AH::Array< T, N > &coefficients)
	Construct a new FIR Filter object. More...
T	operator() (T input)
	Update the internal state with the new input \( x[n] \) and return the new output \( y[n] \). More...

Private Attributes
uint8_t	index_b = 0
AH::Array< T, N >	x = {}
AH::Array< T, 2 *N - 1 >	coefficients

Constructor & Destructor Documentation

FIRFilter()

FIRFilter ( const AH::Array< T, N > &  coefficients )

inline

Construct a new FIR Filter object.

The coefficients \( b \) can be derived from the transfer function:

\[ H(z) = b_0 + b_1 z^{-1} + \ldots + b_{N_b} z ^{-N_b} \]

Parameters

coefficients

The coefficients of the transfer function numerator.

Definition at line 32 of file FIRFilter.hpp.

Member Function Documentation

operator()()

T operator() ( T  input )

inline

Update the internal state with the new input \( x[n] \) and return the new output \( y[n] \).

Parameters

input

The new input \( x[n] \).

Returns

The new output \( y[n] \).

Definition at line 45 of file FIRFilter.hpp.

Member Data Documentation

index_b

uint8_t index_b = 0

private

Definition at line 66 of file FIRFilter.hpp.

x

AH::Array<T, N> x = {}

private

Definition at line 67 of file FIRFilter.hpp.

coefficients

AH::Array<T, 2 * N - 1> coefficients

private

Definition at line 68 of file FIRFilter.hpp.

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

• FIRFilter.hpp