Dr Geoff Lindsey | Speech is really SBEECH! @DrGeoffLindsey | Uploaded March 2022 | Updated October 2024, 1 hour ago.
Aspiration is important because UNaspirated /p t k/ can easily sound to English speakers like /b d g/. But there are some contexts in which English DISALLOWS aspiration!

How to DO aspiration:
youtube.com/watch?v=6PSdlctYBsw
youtube.com/watch?v=xe6MIo816jo

I'm no longer taking results from these quizzes, but you can do them for fun here:
englishspeechservices.com/discussed-or-disgust-uk
englishspeechservices.com/discussed-or-disgust-usa

Sblended milkshakes:
sblendedshakes.com

audio clips forvo.com
software audacityteam.org
video clips pixabay.com
music aaron-kenny.com