File Extension Library

.SPH File Extension

  • Developer by: NIST
  • Category: Audio Files
  • Format: Binary

What is an .SPH file?

.SPH file extension is created by NIST. .SPH has been classified as Audio Files. The format of .SPH file is Binary.

.SPH is NIST SPHERE Audio File

Waveform audio file created in the NIST SPHERE format, which is often used in speech recognition research; often contains a recording of a person speaking; can be provided as input to speech recognition systems.

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.

List of all softwares that can open the NIST SPHERE Audio File
File Type 2:

MikuMikuDance Sphere Mapping File

Developer by: MikuMikuDance Category: Raster Image Files Format: Binary

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.

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."

List of all softwares that can open the MikuMikuDance Sphere Mapping File

How to Open .SPH file on different platforms

Open .SPH File on Windows

  • Right-click a .SPH
  • Left-click "Open With" > "Choose another app"
  • Select the program that opens .SPH file and Select check box "Always use this app to open .SPH files" Press "Ok"

Open .SPH File on Mac

  • Right-click (or Ctrl + Left-click) the .SPH file
  • Click "Open With" > "Other.."
  • Then choose another program from the app list and press "Open"
  • Select check box "Turn on" for "Always open in app"

Open .SPH File on Linux

Right click on the .SPH file, choose "Open with" and select a program from the list above

Open .SPH File on iPhone

Select a file. If you don't see an application to open the .SPH file, tap "Share" and choose the right app.
Method 2
Save the file. Then open the app «Files». Touch and hold the file, then release your finger. You will see a black menu bar. After that tap "Share" and select an application.

Open .SPH File on Android

Tap the Settings icon on an Android smartphone, then select «Applications». Click the Settings icon in the upper right corner of the screen, to change the default apps.
If you want to open, edit, save or even convert .SPH files on Android, then your best bet is to download one of the dedicated apps available on Google Play.

How to fix problems with .SPH files

  1. You need to update the application that you normally use to open .SPH files. Only the latest version of the software supports the current .SPH file format
  2. You need to check the .SPH file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)