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This version (10 Feb 2021 13:07) was approved by Sanjeeva Reddy.
This version (10 Feb 2021 13:07) was approved by Sanjeeva Reddy.This is an old revision of the document!
Table of Contents
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RMS Table
Description
The RMS Table takes an input signal and outputs the interpolated mapped value of the signal, relative to the table, depending on the calculated rms input. The block uses rms average values and maps them to the user-selectable table values, employing linear interpolation in between table values.
Usage
To edit the table values click on the showtable button and it will open the RMS Table Editor window to configure the table values.
Targets Supported
| Name | ADSP-214xx(Sample) | ADSP-214xx(Block) | ADSP-215xx/ADSP-SC5xx(Sample) | ADSP-215xx/ADSP-SC5xx(Block) |
|---|---|---|---|---|
| RMS Table | Yes | Yes | Yes | Yes |
Pins
Input
| Input0 | Audio | Input Channel 0 |
Output
| Output0 | Control | Output channel 0 |
Configurable Parameters
| GUI Parameter Name | Default Value | Range | Function Description |
|---|---|---|---|
| RmsTC | 70 dB/s | 10 to 10000 dB/s | Controls the time constant used for calculating the RMS value. This determines how rapidly the gain will adapt to changes in the input level; this is also called the attack time. |
| Hold | 0 ms | 0 to 2000 ms | Controls the time the RMS average holds its current output setting before it detects a lower value and starts ramping down. |
| Decay | 4 dB/s | 0 to 20 dB/s | Controls the rate at which the output signal returns to a lower detected level. Decay is responsible for releasing the signal at a given rate. This is also referred to as the release time. |
| TableValues | User-configurable values |
DSP Parameters
| Parameter Name | Description | ADSP-214xx/SC5xx/215xx |
|---|---|---|
| RmsTC | Controls the time constant used for calculating the RMS value. This determines how rapidly the gain will adapt to changes in the input level; this is also called the attack time. | Float |
| Hold | Controls the time the RMS average holds its current output setting before it detects a lower value and starts ramping down. | Float |
| Decay | Controls the rate at which the output signal returns to a lower detected level. Decay is responsible for releasing the signal at a given rate. This is also referred to as the release time. | Float |
| TableValues | Table Values | Float |
DSP Parameter Computation
RmsTC = Abs(1-(10)^(RmsTC/(10*(FS+0.000001) )))
Hold= Hold*FS /1000
Decay = Decay/ (FS + 0.000001)
/srv/wiki.analog.com/data/pages/resources/tools-software/sigmastudiov2/modules/basic/rmstable.txt · Last modified: 12 May 2021 17:00 by Nikhin Shetty