Overview

Outputs a constant DC value with optional input control pin to scale DC value.

Discussion

The DC Source module has an internal variable holding one data value. The module continuously fills the output wire with the internal data value. This module also has optional input control pin to scale the internal data value. The output blockSize and sample rate can be specified. If not specified, the values are taken from the system input.

Type Definition

typedef struct _ModuleDCSourceV2
{
    ModuleInstanceDescriptor instance;            // Common Audio Weaver module instance structure
    FLOAT32 value;                                // Data Value
} ModuleDCSourceV2Class;

Variables

Properties

Name	Type	Usage	isHidden	Default value	Range	Units
value	float	parameter	0	1	-20:20

Pins

Output Pins

Name: control

Description: Input control signal

Data type: float

Channel range: Unrestricted

Block size range: Unrestricted

Sample rate range: Unrestricted

Complex support: Real

Output Pins

Name: out

Description: output data

Data type: float

MATLAB Usage

File Name: dc_source_v2_module.m

 M=dc_source_v2_module(NAME, NUMCHANNELS, BLOCKSIZE, SAMPLERATE, CONTROLPIN)
 Creates a source module that allows you to inject DC test data into
 the audio processing layout. Also has optional input control pin to scale
 the data value to be written on ooutput pin.
 
 Arguments:
    NAME - name of the module.
    NUMCHANNELS - number of interleaved channels in each output pin.
    BLOCKSIZE - number of samples per output channel.
    SAMPLERATE - sample rate of the output signal, in Hz.
    CONTROLPIN - boolean to add control input pin or not.