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 # sound:compute loudness ISO 532-2

 Last update: 31.07.2026 

**Version: 0.0.0**

## Description

Compute binaural and monaural loudness according to the ISO532-2 standard.

## Inputs

InputNameExpected type(s)Description**Pin 0**   
Requiredinput\_signal[`field`](../../core-concepts/dpf-types.md#field), [`fields_container`](../../core-concepts/dpf-types.md#fields-container)Input signal in Pa on which to compute loudness. If signal is a FieldsContainer, it must contain exactly two Fields.**Pin 1**field\_type[`string`](../../core-concepts/dpf-types.md#standard-types)Field type associated with the recording conditions.  
  
Supported values:  
  
\* Free  
\* Diffuse  
  
Default: Free**Pin 2**recording\_type[`string`](../../core-concepts/dpf-types.md#standard-types)Recording system used to measure the input signal.  
  
Supported values:  
  
\* **Mic**: Single microphone  
\* **Head**: Head and torso simulator  
  
Default: Mic## Outputs

OutputNameExpected type(s)Description**Pin 0**output\_binaural\_loudness\_sone[`double`](../../core-concepts/dpf-types.md#standard-types)Binaural loudness in sone.**Pin 1**output\_binaural\_loudness\_phon[`double`](../../core-concepts/dpf-types.md#standard-types)Binaural loudness level in phon.**Pin 2**output\_monaural\_loudness\_sone[`vector<double>`](../../core-concepts/dpf-types.md#standard-types)Monaural loudness (left and right) in sone.**Pin 3**output\_monaural\_loudness\_phon[`vector<double>`](../../core-concepts/dpf-types.md#standard-types)Monaural loudness (left and right) level in phon.**Pin 4**output\_binaural\_specific\_loudness[`field`](../../core-concepts/dpf-types.md#field)Binaural specific loudness in sone/Cam.**Pin 5**output\_monaural\_specific\_loudness[`fields_container`](../../core-concepts/dpf-types.md#fields-container)Monaural specific loudness (left and right) in sone/Cam.## 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\_loudness\_iso532\_2

**License**: avrxp\_snd\_level1

## Changelog

- Version 0.0.0: Initial release.