- Extension
- .sph
- .tta
- Format
- Binary
- Binary
- Category
- Audio
- Audio
- Developer
- NIST
- True Audio Software
- Description
- 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.
- Audio file compressed with the Free Lossless True Audio codec (TTA); supports compression of multichannel 8, 16, and 24-bit .WAV data; compresses the original audio data with compression ratios of 30-70 percent.
- MIME Type
- audio/x-nist-sph
- audio/x-tta