FIRLoadingFract32

Overview

Simulates loading of fir fract32 filter

Discussion

This module is used for CPU load testing purposes and implements a large number of fixed point FIR filter taps. At instantiation time, you specify MAXNUMTAPS - the maximum number of filter taps that you would like to simulate. Then at run-time you can vary the number of filter taps running from 1 to MAXNUMTAPS. This makes the CPU work harder since more filter taps are running. Internally, the module uses a fract32 FIR module to implement the filtering.

Note that if the filter is connected to a multichannel input, then the module implements numChannels * numTaps filters. That is, the number of filters is scaled by the number of channels processed.

Module Pack

Advanced

ClassID

classID = 1275

Type Definition

typedef struct _ModuleFIRLoadingFract32
{
ModuleInstanceDescriptor instance;            // Common Audio Weaver module instance structure
INT32 maxTaps;                                // Maximum FIR filter taps that can be run
INT32 numTaps;                                // Number of FIR filter taps currently running
awe_modFIRFract32Instance *filt; // FIR fract32 filter} ModuleFIRLoadingFract32Class;

Variables

Properties

Name	Type	Usage	isHidden	Default Value	Range	Units
maxTaps	int	const	0	1000	1:1000
numTaps	int	parameter	0	1	1:1000

Pins

Input Pins


Name	in
Description	Audio Input
Data type	fract32
Channel range	Unrestricted
Block size range	Unrestricted
Sample rate range	Unrestricted
Complex support	Real

Output Pins


Name	out
Description	Audio output
Data Type	fract32

Matlab Usage

File Name: fir_loading_fract32_module.m 
 M = fir_loading_fract32_module(NAME, MAXNUMTAPS) 
 Module which simulates the loading of MAXNUMTAPS fir fract32 module.  The 
 module is used for profiling and demonstrations of the computational 
 capabilities of processors.  Arguments: 
    NAME - name of the module. 
    MAXNUMTAPS - maximum taps that will be tried (this is used for 
        memory allocation and is set to 10000 by default).