## On this page

  

 

 # sound:compute fluctuation strength

 Last update: 31.07.2026 

**Version: 0.0.0**

## Description

Compute the fluctuation strength of a signal based on the master thesis of A. Sontacchi, entitled 'Entwicklung eines Modulkonzeptes fur die psychoakustische Gerauschanalyse unter MATLAB' (Technischen Universitat Graz, 1998, pp 1-112).

## Inputs

InputNameExpected type(s)Description**Pin 0**   
Requiredinput\_signal[`field`](../../core-concepts/dpf-types.md#field)Input signal in Pa on which to compute fluctuation strength.## Outputs

OutputNameExpected type(s)Description**Pin 0**output\_fluctuation\_strength[`double`](../../core-concepts/dpf-types.md#standard-types)Fluctuation strength in vacil.**Pin 1**output\_specific\_fluctuation\_strength[`field`](../../core-concepts/dpf-types.md#field)Specific fluctuation strength in vacil, that is, the fluctuation strength values over Bark band indexes.## Configurations

NameExpected type(s)Default valueDescription**mutex**[`bool`](../../core-concepts/dpf-types.md#standard-types)falseIf this option is set to true, the shared memory is prevented from being simultaneously accessed by multiple threads.## Scripting

**Category**: sound

**Plugin**: sound

**Scripting name**: None

**Full name**: None

**Internal name**: compute\_fluctuation\_strength

**License**: avrxp\_snd\_level1

## Changelog

- Version 0.0.0: Initial release.