What is an SPH File?
An SPH file usually contains a sound recording of a human in the NIST SPHERE format. These can then be used in speech recognition software as well. The SPH file is in a waveform format that has a 16 kHz sampling rate and uses 16-bit linear PCM.
Unlike many other audio formats, SPH files are not that common, therefore can only be played using a handful of programs.
Download SPH Sample Files
Continue to download .SPH sample files from below that are available in different sizes and audio lengths.