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SPH File - What is an .sph file and how do I open it?
Learn about .SPH files and view a list of programs that open them.
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Overview
What is an SPH file? An SPH file is a waveform audio file created in the NIST SPHERE format, which is often used in speech recognition research. It usually contains a recording of a person speaking. SPH files can be provided as input to speech recognition systems.
More Information SPHERE waveforms use 16-bit linear PCM and a 16KHz sample rate. They have a 1024 byte human-readable header that uses ASCII text formatting. NOTE: SPH files can be converted to the .WAV format using a utility called sph_convert or SoX.
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DeveloperMikuMikuDance
Popularity3.5 | 4 Votes
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.SPH File Extension
2 file types use the .sph file extension.
NIST SPHERE Audio File
| Developer | NIST |
| Popularity |
3.8 | 10 Votes |
NEW: Open your .SPH file online with File Helper . View Online
What is an SPH file?
An SPH file is a waveform audio file created in the NIST SPHERE format, which is often used in speech recognition research. It usually contains a recording of a person speaking. SPH files can be provided as input to speech recognition systems.
More Information
SPHERE waveforms use 16-bit linear PCM and a 16KHz sample rate. They have a 1024 byte human-readable header that uses ASCII text formatting.
NOTE: SPH files can be converted to the .WAV format using a utility called sph_convert or SoX.
How to open an SPH file
Because SPH files are uncommon, most popular media players cannot play them. However, you can play SPH audio in VLC media player , and you can convert SPH files to a more usable audio format using FFmpeg or SoX .
Programs that open SPH files
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Platform
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X
Windows
File Viewer Plus
—
Get it from Microsoft
Free +
VideoLAN VLC media player
Free
SoX
Free
FFmpeg
Free
Mac
VideoLAN VLC media player
Free
SoX
Free
FFmpeg
Free
Linux
VideoLAN VLC media player
Free
SoX
Free
FFmpeg
Free
Web
FileHelper.com
Free
Category: Audio Files
Updated: September 15, 2020
MikuMikuDance Sphere Mapping File
| Developer | MikuMikuDance |
| Popularity |
3.5 | 4 Votes |
3D model effects file used by MikuMikuDance, a game where players control vocaloid virtual dancing characters; contains a .BMP image but uses the ".sph" extension instead; can used for adding a shiny look to 3D model features such as hair or clothes.
More Information
SPH files may also incorporate transparency (e.g., .PNG or .TGA images), but they are most commonly created from non-transparent bitmap images.
NOTE: To create a SPH file, draw a bitmap (".bmp") image with any graphics editor and rename the file extension to ".sph."
Programs that open or reference SPH files
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MikuMikuDance
Free
Category: Raster Image Files
Updated: April 3, 2012