Overview

Replicates, windows, and overlap adds signals

Discussion

This module forms part of the synthesis bank of a filterbank and typically follows the inverse FFT. The module replicates the input N times where N = (window length) / (ifftSize). The replicated signal is multiplied by the window and the result is added to a state buffer. The first OLEN samples of the state buffer are output and then the state buffer is left shifted by OLEN samples.

This module operates on fract32 data.

Type Definition

typedef struct _ModuleRepWinOverlapFract32
{
    ModuleInstanceDescriptor instance;            // Common Audio Weaver module instance structure
    INT32 winLen;                                 // Length of the window
    INT32 repCount;                               // Number of times to replicate the input prior to applying the window
    fract32* window;                              // Window coefficients
    fract32* state;                               // State variable array
} ModuleRepWinOverlapFract32Class;

Variables

Properties

Pins

Input Pins

Name: in

Description: audio input

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Sample rate range: Unrestricted

Complex support: Real

Output Pins

Name: out

Description: audio output

Data type: fract32

MATLAB Usage

File Name: replicate_window_overlap_fract32_module.m

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