The most recent version of this page is a draft.
This version is outdated by a newer approved version.This version (13 Nov 2019 13:22) is a draft.
Approvals: 0/1
This version is outdated by a newer approved version.This version (13 Nov 2019 13:22) is a draft.Approvals: 0/1
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Table of Contents
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Down Sampling
Description
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 downsample 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 factor at with the input sample rate will be divided |
| AntiAliasFilter | False | True/False | Enabled/Disabled the antialias filter. If enabled, antialias 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 ? 97:47
resources/tools-software/sigmastudiov2/modules/advanceddsp/downsampling.1573647725.txt.gz · Last modified: 13 Nov 2019 13:22 by Sanjeeva Reddy