This is happening to me on Ubuntu MATE 20.04.1 with Firefox 84.0.
Like this user on Ask Ubuntu, I too have disabled media.webspeech.synth and uninstalled all speech-dispatcher apps, and still have this issue.
https://askubuntu.com/questions/1240696/how-do-i-fix-garbled-audio-on-certain-web-sites-firefox
After seeing he has no answers, came here to file a bug, found this.
This is happening to me on Ubuntu MATE 20.04.1 with Firefox 84.0.
Like this user on Ask Ubuntu, I too have disabled media.webspeech .synth and uninstalled all speech-dispatcher apps, and still have this issue.
https:/ /askubuntu. com/questions/ 1240696/ how-do- i-fix-garbled- audio-on- certain- web-sites- firefox
After seeing he has no answers, came here to file a bug, found this.