У вашего броузера проблема в совместимости с HTML5
This is an awesome throat singing guide. It really helped me with my tongue position.
http://tarbagan.net/nodo/how/how.html
Finally, after literally years of requests, I present to you a tutorial on how to do the throat bass. It's a phenomenally popular sound that almost every popular beatboxer uses.
I'm not exaggerating my warnings at the start. This is a really hard sound, both in terms of being hard to learn and being physically demanding on your throat. Some beatboxers report bleeding from the throat. I personally just had an extremely hoarse voice for a few days. Do it in moderation.
To make the sound:
-Fake a cough. Hear that raspy sound? That's what you want.
-Draw this sound out and add a vocalization. You should sound like an idiot. This is called "progress."
-Use your tongue and experiment with different levels of pressure to make the sloppy sound not sound sloppy.
I really hope this helps. I'll try make a video showing new techniques and tricks as and when I discover them.
Peace, love, and wubwubwub
-FT