(8.D.2.3) BufferDown
- Catherine Spain
Overview
Buffers the input into smaller block sizes. Non-overlapping
Discussion
This module is the interface between large block processing and small block processing. The module breaks up large blocks of data into smaller blocks. The larger blocks are executed in a lower priority thread compared to the smaller blocks. The module works on any 32-bit data type including integer, fract32, and floating-point.
The argument OUTBLOCKSIZE determines the blockSize of the output pin. If OUTBLOCKSIZE is positive, then the output blockSize equals OUTBLOCKSIZE. If OUTBLOCKSIZE is negative, then the output blockSize equals the input blockSize divided by (-OUTBLOCKSIZE). Note, not all targets support this. Check the target documentation to see how many levels of audio processing are supported.
Type Definition
-Not Shown-
Variables
Properties
Name | Type | Usage | isHidden | Default value | Range | Units |
outBlockSize | int | const | 0 | -1 | Unrestricted | Â |
Pins
Input Pins
Name: in
Description: audio input
Data type: {float, int, fract32}
Channel range: Unrestricted
Block size range: Unrestricted
Sample rate range: Unrestricted
Complex support: Real and Complex
Output Pins
Name: out
Description: audio output
Data type: {float, int, fract32}
MATLAB Usage
File Name: buffer_down_subsystem.m
SYS=buffer_down_subsystem(NAME, OUTBLOCKSIZE)
Create a module which buffers data into a smaller block size. The buffering
is non-overlapping and the downstream processing occurs at a higher block
rate. Arguments:
NAME - name of the module.
OUTBLOCKSIZE - specifies the blockSize of the output pin. If
OUTBLOCKSIZE is positive, then the output blockSize equals
OUTBLOCKSIZE. If OUTBLOCKSIZE is negative, then the output blockSize
equals the input blockSize times (-OUTBLOCKSIZE).Â