Adding a kazoo effect

[Trebor]

@pszkraba

This might seem like a strange request, but I teach English as a second language and one of the best methods to teach rhythm and intonation is to hum the words through a kazoo. This allows the student to hear the pattern without being distracted by the words.

similar question … Removing words from speech, and maintaining the tone

“envelope follower” is another possibility, but the result would be monotone, (whereas kazoo can vary in pitch)

Envelope (waves)