The most recent version of this page is a draft.
This version is outdated by a newer approved version.This version (05 Jun 2020 08:52) is a draft.
Approvals: 0/1
This version is outdated by a newer approved version.This version (05 Jun 2020 08:52) is a draft.Approvals: 0/1
This is an old revision of the document!
Table of Contents
Click here to return to the AdvancedDSP page
Down Sampling
Description
The Down Sampling module is mainly used to get the input samples to a lower the process and sampling rate. For example the bass portion of the audio need not to 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-samples the input accordingly.
Targets Supported
| Name | ADSP-214xx(Sample) | ADSP-214xx(Block) | ADSP-215xx/ADSP-SC5xx(Sample) | ADSP-215xx/ADSP-SC5xx(Block) |
|---|---|---|---|---|
| DownSampler | No | No | No | Yes |
Pins
Input
| Name | Type | Description |
|---|---|---|
| Input | Audio | Input channel |
Output
| Name | Type | Description |
|---|---|---|
| Output | Audio | Down sampled output |
Configurable Parameters
| GUI Parameter Name | Default | Range | Function Description |
|---|---|---|---|
| Factor | 2 | 2,4,8,16,32 | The input sample rate will be divided by Factor |
| AntiAliasFilter | False | True/False | Enabled/Disabled the anti-alias filter. If enabled, anti-alias filter will be applied before DownSampling the signal |
DSP Parameters
| Name | Description | ADSP-214xx/215xx/SC5xx |
|---|---|---|
| Factor | The factor at with the input sample rate will be divided | Float |
| NFilterTaps | Number of antialiasing filter coefficients | Float |
| FIRCoeffs | coefficients | Float |
DSP Parameter Computation
NFilterTaps = Factor >= 16 ? 97:49
resources/tools-software/sigmastudiov2/modules/advanceddsp/downsampling.1591339966.txt.gz · Last modified: 05 Jun 2020 08:52 by Nikhin Shetty