Overview

Provides fractional delay

Discussion

This subsystem implements a delay module which provides a fractional delay. This can be achieved by cacading the delay module and a fir filter which is designed to provide the fractional delay of 0.0to 1.0. Filter will have own set of coefficients for each fractional value which are calculated at design time.

Type Definition

typedef struct _ModuleFractionalDelayV2Fract32
{
    ModuleInstanceDescriptor instance;            // Common Audio Weaver module instance structure
    INT32 maxDelay;                               // Maximum delay, in samples. The size of the delay buffer is maxDelay*numChannels.
    FLOAT32 floatCurrentDelay;                    // total delay
    awe_modDelayInstance *ConstantDelay; // Time delay in which the delay is specified in samples
    awe_modFIRFract32Instance *FIRmodule; // FIR fract32 filter
} ModuleFractionalDelayV2Fract32Class;

Variables

Properties

Name	Type	Usage	isHidden	Default value	Range	Units
maxDelay	int	const	0	300	Unrestricted	samples
floatCurrentDelay	float	parameter	0	20	20:321	Samples

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

Scratch Pins

Channel count: 1

Block size: 32

Sample rate: 48000

MATLAB Usage

File Name: fractional_delay_v2_module.m

 Create a subsystem that implements fractional delay module
   ARGUMENTS:
   NAME - name of the module.
   MAXDELAY - maximum delay provided by the module.