##  [Ansys Sound for developers](/docs/sound) 

## Overview

Ansys Sound™ post-processing sound design software allow engineers to analyze and optimize their product noise using desired sound quality criteria and listening tests. Innovative time-frequency analysis and processing functions are available for isolating and modifying sound components and assessing the influence of sounds on human perception. Ansys Sound software reproduce the 3D sound in simulators and vehicles, including tools to tune active sound (In Car Entertainment) or electric vehicles (EVs). For more information, see the [Ansys Sound product page](https://www.ansys.com/products/acoustics-analysis/ansys-sound).

The **Ansys Sound APIs** empower you to easily perform the following tasks:

- **Active Sound Design for Electric Vehicles** (ASDforEV) software: Send the vehicle parameters to the **ASDforEV** application using Open Sound Control (OSC) messages over User Datagram Protocol (UDP).
- **Car Sound Simulator** (CSS) software: Send the driving parameters to the **CSS** application to the application using OSC messages over UDP.
- **Virtual Reality Sound** (VRS) software: Send source configuration and control updates to the **VRS** application using OSC messages over UDP.

The **PyAnsys Sound** **library** lets you use the main features of Ansys Sound software to perform the postprocessing and analysis of sounds and vibrations in **Python**. This library is based on [PyDPF-Core](https://dpf.docs.pyansys.com/version/stable/) and the DPF Sound plugin. It is a Python wrapper that implements classes on top of DPF Sound operators.





 



## OS and supported languages

**Ansys Sound APIs** for **ASDforEV**, **CSS**, and **VRS** software rely on the OSC protocol, which is delivered over UDP. This means that these APIs are independent of the operating system and language, even if **Ansys Sound** is supported only on **Windows**.

The **PyAnsys Sound library** is available for **Windows** and **Linux** in Python. Note that the DPF server and DPF Sound plugin must run under Windows, and the client (the API) can be used from both Linux and Windows.





 



 

 

 



## Documentation

###### ASDforEV API

Remotely control the vehicle parameters for ASD for EV software.

[2026 R1](/docs/asdforev-api-2026-r1/index.md)

[Previous](/docs/sound/previous)





 

 



###### CSS API

Remotely control the driving parameters for CSS software.

[2026 R1](</docs/car-sound-simulator-api-2026-r1/index.md >)

[Previous](/docs/sound/previous)





 

 



###### VRS API

Remotely control VRS software.

[2026 R1](/docs/vr-sound-api-2026-r1/index.md)

[Previous](/docs/sound/previous)





 

 



 

 

 



###### PyAnsys Sound (open source)

The PyAnsys Sound library lets you use the main features of Ansys Sound software to perform the postprocessing and analysis of sounds and vibrations in Python.

[View docs](https://sound.docs.pyansys.com/version/stable/)





 

 



 

 

 



 

 

 



## Related projects

When using the **Ansys** **Sound APIs**, you can perform further development with the APIs and libraries of these Ansys products:





 



###### Mechanical





 

<https://developer.ansys.com/docs/mechanical>

 

 



###### Fluent





 

<https://www.ansys.com/products/fluids/ansys-fluent>

 

 



###### DPF





 

<https://developer.ansys.com/docs/dpf>

 

 



###### Motion





 

<https://developer.ansys.com/docs/motion>