Overview

DC Blocking Filter

Discussion

DC Blocking filter. The module supports multi-channel

Type Definition

typedef struct _ModuleDcBlock
{
    ModuleInstanceDescriptor instance;            // Common Audio Weaver module instance structure
    FLOAT32 fc;                                   // Cut on freq for highpass filter
    FLOAT32 coeff;                                // coefficents for dc blocking filter.
    FLOAT32* filterStates;                        // State variable, 1 per channel
} ModuleDcBlockClass;

Variables

Properties

Name	Type	Usage	isHidden	Default value	Range	Units
fc	float	parameter	0	0.1	0:20	Hz
coeff	float	derived	1	-1	Unrestricted
filterStates	float*	state	1	[1 x 1]	Unrestricted

Pins

Input Pins

Name: in

Description: Input signal

Data type: float

Channel range: Unrestricted

Block size range: Unrestricted

Sample rate range: Unrestricted

Complex support: Real and Complex

Output Pins

Name: out

Description: Filterd Output signal

Data type: float

MATLAB Usage

File Name: dc_block_module.m

 M = dc_block_module(NAME)
 Implements a 1st order DC blocking filter.
 Arguments:
 NAME - name of the module

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(8.D.2.2 ) DcBlock

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