Processes and normalizes FFT data. More...

#include <FFTFilter.h>

Collaboration diagram for FFTFilter:

Public Member Functions
	FFTFilter ()
	Constructs an `FFTFilter` instance with default configurations.

float	GetOutput ()
	Retrieves the current filtered and normalized output value.

float	Filter (float value)
	Filters and normalizes the input value for FFT data processing.

Private Attributes
RunningAverageFilter< 20 >	minKF = RunningAverageFilter<20>(0.05f)
	Running average filter for baseline normalization.

float	outputValue = 0.0f
	Stores the most recent filtered output value.

Detailed Description

Processes and normalizes FFT data.

The FFTFilter applies a running average filter to FFT input values, removes a baseline minimum value, and normalizes the output for stability and usability in other FFT-based functionalities.

Definition at line 26 of file FFTFilter.h.

Constructor & Destructor Documentation

◆ FFTFilter()

FFTFilter ( )

Constructs an FFTFilter instance with default configurations.

Definition at line 3 of file FFTFilter.cpp.

Member Function Documentation

◆ Filter()

float Filter ( float value )

Filters and normalizes the input value for FFT data processing.

Parameters

value The current FFT input value.

Returns: The filtered and normalized FFT value.

Definition at line 9 of file FFTFilter.cpp.

References Mathematics::Constrain(), RunningAverageFilter< memory >::Filter(), minKF, and outputValue.

Referenced by MicrophoneFourier::Update(), and MicrophoneFourier::UpdateDMA().

◆ GetOutput()

float GetOutput ( )

Retrieves the current filtered and normalized output value.

Returns: The most recent filtered output value.

Definition at line 5 of file FFTFilter.cpp.

References outputValue.

Member Data Documentation

◆ minKF

RunningAverageFilter<20> minKF = RunningAverageFilter<20>(0.05f)

private

Running average filter for baseline normalization.

Definition at line 28 of file FFTFilter.h.

Referenced by Filter().

◆ outputValue

float outputValue = 0.0f

private

Stores the most recent filtered output value.

Definition at line 29 of file FFTFilter.h.

Referenced by Filter(), and GetOutput().

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

Public Member Functions

Private Attributes