Praat is a scientific tool for those studying linguistics that can analyze spectrograms.
It supports speech synthesis, including articulatory synthesis. It also creates high-quality images of data suitable for publication.
This freeware is user-friendly since it has basic programmable scripting language and corresponds with other programs.
With it, it’s possible to export a loaded audio file into WAV, AIFF, AIFC, NIST, or FLAC format, as well as to a raw 16, 24, or 32-bit raw endian file.
Praat is a powerful audio analysis tool that will give linguists a high degree of control over spectrographs.