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.

Type Definition

typedef struct _ModuleRepWinOverlap
{
    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
    FLOAT32* window;                              // Window coefficients
    FLOAT32* state;                               // State variable array
} ModuleRepWinOverlapClass;

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: float

MATLAB Usage

File Name: replicate_window_overlap_module.m

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