(8.D.2.1) SumDiff
- Catherine Spain
Overview
Computes the sum and difference of two signals
Discussion
This module has 2 input pins and 2 output pins. Input pins must have same block size, number of channels, and sample rate. Output pins have same block size, number of channels, and sample rate as input pins.
Output1=(Input1+Input2)/2, Output2=(Input1-Input2)/2.
Note that if we cascade 2 of these modules then outputs of 2nd module are equal to inputs of first module scaled by 0.5
Type Definition
typedef struct _ModuleSumDiff
{
ModuleInstanceDescriptor instance; // Common Audio Weaver module instance structure
} ModuleSumDiffClass;Pins
Input Pins
Name: in1
Description: Audio input
Data type: float
Channel range: Unrestricted
Block size range: Unrestricted
Sample rate range: Unrestricted
Complex support: Real and Complex
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Name: in2
Description: Audio input
Data type: float
Channel range: Unrestricted
Block size range: Unrestricted
Sample rate range: Unrestricted
Complex support: Real and Complex
Output Pins
Name: out1
Description: Audio output
Data type: float
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Name: out2
Description: Audio output
Data type: float
MATLAB Usage
File Name: sum_diff_module.m
M=sum_diff_module(NAME)
Creates a sum/difference module for use with the Audio Weaver
environment.
Arguments:
NAME - name of the module.Â