Open SPH files with File Viewer Plus
Do you need to open an SPH file?
File Viewer Plus can open SPH (NIST SPHERE Audio) files and provides various playback options. You can convert SPH files to other formats, as well, such as MP3 and MPEG-4 (M4A).
Play SPH files with our intuitive audio player. Try File Viewer Plus for free today!
What is an .SPH file?
SPH files are audio files saved in the NIST SPHERE (SPH) format, which stores speech recordings along with detailed header information about the audio data. Unlike more common consumer formats, such as MP3 or AAC, SPH files are typically uncompressed or use simple compression methods, preserving the original voice data for accurate analysis. Researchers, speech scientists, and developers commonly use the format in speech recognition, linguistics, and acoustic research projects.
You may encounter SPH files when working with speech datasets, evaluating voice recognition systems, or accessing archives created for government or academic research. File Viewer Plus can play SPH files and convert the audio to MP3 or M4A formats at various bitrates and frequencies.
Alternate file extensions: .nist
Learn more about SPH files at FileInfo.com →About File Viewer Plus
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