SPX File

What are SPX files and how to open them

Are you having problems opening a SPX file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a SPX file?

SPX files have multiple uses, and Speex-encoded Audio is one of them. Read more about the other uses further down the page.

Speex-encoded Audio File

These files are Speex audio files. What is special about .spx is that it is a file format that is free of any patent restrictions since it is BSD licensed.

An audio file encoded and compressed in Speex will typically have the .spx file suffix on its name. Speex is primarily used for speech. It is an open-source software library used in many different audio creation and conversion products.

There are many speech audio formats, but most of them are proprietary and, not to miss, expensive. And in the past, many utilized speech audio files to broadcast previous news and messages and to place speech on video games. However, because these formats are proprietary and expensive, many smaller development studios could not afford them. To solve this, the Speex project was created. This project aims to provide a free format that can be used by everybody.

Speex has now largely been replaced by the Opus format.

How to open SPX files

We have identified four SPX openers that are compatible with this specific type of SPX file.

Programs that open Speex-encoded Audio files

Last updated: December 21, 2022

More file formats using the SPX extension

Through our research of SPX files, we know that the following formats exist. However, we have not yet analyzed them in detail.

  • Spectrum 512 Extended Bitmap

Various apps that use files with this extension

These apps are known to open certain types of SPX files. Remember, different programs may use SPX files for different purposes, so you may need to try out a few of them to be able to open your specific file.

KMPlayerKMPlayerVerified
K-Lite Mega Codec PackK-Lite Mega Codec PackVerified
MixPadMixPadUser submitted
MplayerMplayerUser submitted
MPC-HCMPC-HCUser submitted
WavePadWavePadUser submitted
TS PlayerTS PlayerUser submitted
GOM PlayerGOM PlayerUser submitted
GuPlayerGuPlayerUser submitted
Microsoft Windows Media PlayerMicrosoft Windows Media PlayerUser submitted

Help us help others

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