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This version is outdated by a newer approved version.This version (10 Feb 2021 13:06) was approved by Sanjeeva Reddy.
This version is outdated by a newer approved version.This version (10 Feb 2021 13:06) was approved by Sanjeeva Reddy.This is an old revision of the document!
Table of Contents
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Signal Envelope
Description
The Signal Envelope block measures the rms average value of the input signals.Holds the signal level for time specified in Hold Control(ms) before starting increase/decrease the output signal level,when there is a change in input signal level.
Targets Supported
| Name | ADSP-214xx(Sample) | ADSP-214xx(Block) | ADSP-215xx/ADSP-SC5xx(Sample) | ADSP-215xx/ADSP-SC5xx(Block) |
|---|---|---|---|---|
| Signal Envelope | Yes | Yes | Yes | Yes |
Pins
Input
| Name | Type | Description |
|---|---|---|
| Input | Audio | Input channel |
Output
| Name | Type | Description |
|---|---|---|
| Output | Audio | Output channel |
Configurable Parameters
| GUI Parameter Name | Default Value | Range | Function Description |
|---|---|---|---|
| RmsTC | 120 | 1 to 10000 | Controls the time constant (TC) in dB/second that is used for calculating the RMS input value. The time constant determines how rapidly the compressor will respond to input signal level changes, e.g. the “Attack” time. |
| Hold | 0 | 0 to 2000 | Controls the time (ms)the envelope maintains the output level before it starts decreasing as the input level decreases |
| Decay(NA for Ext Decay) | 10 | 1 to 10000 | Controls the rate at which envelope signal decreases in response to the decrease in the input signal |
DSP Parameters
| Parameter Name | Description | ADSP-214xx/SC5xx/215xx |
|---|---|---|
| RmsTC | Controls the time constant (TC) in dB/second that is used for calculating the RMS input value. | Float |
| Hold | Controls the time (ms)the envelope maintains the output level before it starts decreasing as the input level decreases | Float |
| Decay | Controls the rate at which envelope signal decreases in response to the decrease in the input signal | Float |
DSP Parameter Computation
RmsTC = Abs(1 - 10^(RmsTC/(10 * Sampling Rate)
Hold = (int) Sampling Rate * Hold/1000
Decay = 1/10^(Decay * 2 /(10 * Sampling Rate))
resources/tools-software/sigmastudiov2/modules/dynamicsprocessors/signalenvelope.1582778656.txt.gz · Last modified: 27 Feb 2020 05:44 by Krithika Manchale