If you, or anyone else reading, is interested in playing around with this stuff, there's an open source program called Praat[0]. I assume it still is the go-to in linguistics for making spectrograms, it was back when I was studying it, at least.
There's probably nicer programs that can do the same thing, aimed at people like musicians, but they won't have the phonetics-specific guides and help online.
There's also a large archive of speech recordings from a wide range of languages hosted by UCLA[1], which you can download and play around with. There might be newer archives now, but I remember this one, because Peter Ladefoged wrote the proverbial book on introductory phonetics.
Linguistics generally aligns quite pro-copyleft, so there will be a lot of freely available stuff online.
[0]: https://praat.org/
[1]: https://archive.phonetics.ucla.edu/
There's probably nicer programs that can do the same thing, aimed at people like musicians, but they won't have the phonetics-specific guides and help online.
There's also a large archive of speech recordings from a wide range of languages hosted by UCLA[1], which you can download and play around with. There might be newer archives now, but I remember this one, because Peter Ladefoged wrote the proverbial book on introductory phonetics.
Linguistics generally aligns quite pro-copyleft, so there will be a lot of freely available stuff online.
[0]: https://praat.org/ [1]: https://archive.phonetics.ucla.edu/