What is the difference between .wv and .sph?
- Extension
 - .wv
 - .sph
 
- Format
 - Binary
 - Binary
 
- Category
 - Audio
 - Audio
 
- Developer
 - WavPack
 - NIST
 
- Description
 - Audio file compressed using WavPack Hybrid Lossless Compression; supports both lossy and lossless compression, which produces high-quality compressed files; the compression ratio is typically between 30% and 70%.
 - 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.
 
- MIME Type
 - audio/x-wavpack
 - audio/x-nist-sph
 
- Sample
 - sample.wv
 - sample.sph
 
- Wikipedia
 - .wv on Wikipedia
 - .sph on Wikipedia