This version is outdated by a newer approved version.
This version (06 Oct 2017 14:59) was approved by Venkatesan Krishnamoorthy.The Previously approved version (21 Dec 2016 11:22) is available.
This version (06 Oct 2017 14:59) was approved by Venkatesan Krishnamoorthy.The Previously approved version (21 Dec 2016 11:22) is available.This is an old revision of the document!
Table of Contents
Down Sampling
Click here to return to the Multi-rate processing section.
The down sampling module is mainly used to get the input samples to a lower sampling rate and process.For example the bass portion of the audio need not be processed at higher sampling rates as the frequencies associated with bass are low.
This module takes the downsample factor from the GUI parameters and down sample the input accordingly.
Input Pins
| Name | Format [int/dec] - [control/audio] | Function Description |
|---|---|---|
| Pin 0: Input | decimal- audio | Input Signal to be down-sampled. |
Output Pins
| Name | Format [int/dec] - [control/audio] | Function Description |
|---|---|---|
| Pin 0: Output | decimal - audio | Downsampled Output |
Grow Algorithm
The module can be grown upto 8 channels. All the input signals are downsampled by the same downsample rate.
Configurations
The downsample factor can be changed by combo box.
| GUI Control Name | Default Value | Range | Function Description |
|---|---|---|---|
| Downsample Factor | 2 | 2,3,4,6,8,16 | The factor at with the input sample rate will be divided |
| LPF | Checked | Checked/Unchecked | If checked, an anti aliasing filter will be applied before downsampling the signal |
Change in GUI configuration needs a recompilation of the schematic.
DSP Parameter Information
None
Supported ICs
- ADAU145x
resources/tools-software/sigmastudio/toolbox/multirateprocessing/downsampling.1494591693.txt.gz · Last modified: 12 May 2017 14:21 by Suhasini Raghuram