# Class TButterworthLP

Description | Hierarchy | Fields | Methods | Properties

## Unit

DDspButterworthFilter

## Declaration

`type TButterworthLP = class(TButterworthFilter)`

## Description

no description available, TButterworthFilter description follows

-$DEFINE Debug

## Hierarchy

- TObject
- TFilter
- TIIRFilter
- TButterworthFilter
- TButterworthLP

## Overview

### Methods

| `constructor Create; override;`
| `procedure CalculateCoefficients; override;`
| `function ProcessSample(const Input:Double):Double; override;`
| `function MagnitudeSquared(Frequency:Double):Double; override;`
| `function Phase(Frequency: Double): Double; override;`

## Description

### Methods

| `constructor Create; override;`

| `procedure CalculateCoefficients; override;`

| `function ProcessSample(const Input:Double):Double; override;`

| `function MagnitudeSquared(Frequency:Double):Double; override;`

| `function Phase(Frequency: Double): Double; override;`

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