[FFmpeg-user] delay time in live ultrasound converter

[Michael Koch]

Am 18.04.2020 um 16:52 schrieb Michael Glenn Williams:
> The subject line about ultrasound caught me eye on this thread that woke up
> from last year.
> Can anyone tell us what the original interest in ffmpeg and ultrasound is?

Well, you can use FFmpeg to convert ultrasound to lower frequencies, for 
example if you want to hear bats. I have described that in my book, see 
chapters 3.14 and 3.19 (but the chapter numbers may change in future)
www.astro-electronic.de/FFmpeg_Book.pdf

Michael