This version (18 May 2021 08:58) was approved by John Joseph.The Previously approved version (15 Jan 2021 10:59) is available.
Table of Contents
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Peak Compressor
Description
The Peak Compressor block computes the peak level of the input signal, if peak of the signal is more than the threshold level, signal level immediately changes to new peak level and if the peak level is below the threshold level, it slowly reaches the new peak level by accounting to the hold and decay time.
Variants
- Peak Compressor
- Peak Compressor with Gain Out
Targets Supported
| Name | ADSP-214xx | ADSP-215xx/SC5xx | ADAU145x/146x |
|---|---|---|---|
| ——————————————————-- | —————————- | ——————————-- | —————————- |
| Peak Compressor | B/S | B/S | S |
| Peak Compressor with Gain Out | NA | NA | S |
Pins
Input
| Name | Type | Description |
|---|---|---|
| ————————————— | —————————— | ———————————————— |
| Input1 | Audio | Input channel1 |
Output
| Name | Type | Description |
|---|---|---|
| ————————————— | —————————— | ———————————————— |
| Output1 | Audio | Output channel1 |
Configurable Parameters
| GUI Parameter Name | Default Value | Range | Function Description |
|---|---|---|---|
| ———————————————- | —————————- | ————————————- | —————————————————————- |
| Hold | 0 ms | 0 to 2000 ms | Controls the time (in ms) the compressor maintains its current output gain setting before it starts decreasing as the input level decrease. |
| Decay | 10 dB/s | 0 to 10000 dB/s | Controls the rate at which the compressor gain decreases in response to decrease in the input signal level, e.g. the “Release” time. |
| SoftKnee | False | True/False | Soft-knee lets the compressor ease into action, making a less-abrupt change from unprocessed signal to compressed signal. If it is not activated, the default is hard-knee behavior, in which compression rate reduces or increases abruptly with the threshold level |
| Table | All values are 1 by default | - | Table values are the output to input gain level points |
| IsDBps | True | True/False | Enable /Disable the Control Decay to be either in dB or linear scale |
| NumChannels | 1 | 1 to 20 | Number of input and/or output channels. Change in this value requires re-compilation |
DSP Parameters
| Parameter Name | Description | ADSP-214xx/SC5xx/215xx | ADAU145x/146x |
|---|---|---|---|
| —————————— | —————————————— | ——————————————- | ———————————————- |
| Hold | Hold value | Float | 8.24 format |
| Decay | Decay value | Float | 8.24 format |
| Table | Table values | Float | 8.24 format |
DSP Parameter Computation
Decay = (20000/Decay)/(FS + 0.0000001) (When Decay is in dBps) or Decay/(FS + 0.0000001) (When Decay is in linear)
Hold = FS * Hold/1000
Where FS is the sampling rate
resources/tools-software/sigmastudiov2/modules/dynamicsprocessors/peakcompressor.txt · Last modified: 12 May 2021 09:35 by John Joseph