Upon reading the title, my first thougth was, "goodluck isolating the sound from noisy environment". But then came this "hemi-anechoic chamber" and I was like, "oh, O.K". 😁

Even trees have sound. Nature is beautiful😊

I could listen to Helen speak for hours. Beautiful soul.

Gosh haven't seen this lady for awhile. Love her presentations 😊

this presenter is excellent!!

Very clever using candle flames.

Loved this , Thank you! Have always wondered about how different people respond to sound and the different types and frequencies. To watch some soak in it in calm concert conditions. Some releasing enormous amounts of energy in rock concerts etc Some needing to dance (like me). Some enjoying ASMR. Some not responding at all. It seems it is all quite a physical experience after all.

If only I could listen to my tomato plants to see if they need water. I'd heard trees crackle, but usually it's the branches moving in the wind. I knew how frequency worked from a physical class I took, but it's neat to see how things work. I had a program on my Nintendo 3DS that would allow you to play with a synthesizer and see how the wave form changed. In both the DSi and 3DS systems, you could also record sounds using the built-in microphone, and see the waves. It was neat to see those things as digital images because you can't get all the different qualities in just one simple shape or measurement.

Since then I know it's not my flat anymore it really builds up thoughts about is it or isn't

It's evident that fire has particles that can be applied with momentum 😮😮

if a tree's trunk gurgles and no stethoscope is applied, does it make a sound?

Wegen zu sehr Lebensschutz? Ah thank you so much my love

cool

a cigarette and a powerful car audio system also works for this demonstration 😁

So are the Fußmatte on when I called for the girl above me

Instead of trying to see soundwaves (which are invisible), you could just try to listen to them.

👍

Was she in the Tesseract

Female brian cox

Er macht auf Millitärischen

wouldn't the talking during the "experiment" have caused a disruption?

My not loud speak is on sound that's because

As soon as you go sir mam it trolls again

2:10 "going in and out" 2:16 "vibrating" wow that's 2 too many innuendos for a BBC video. 🤣🤣

There is a myth in India that once a singer had crashed a glass with his voice --- maybe that's true now.

Ywhy im here forrrrrrr r

As you can see hol mich hier raus bin unschuldig mal so rum it is like that what I said I never lied door through

Imagine this guy building up paranoia

I svear 8n the Bibel and my grandpa im not mad at it even if that's the follow up no 8 forgive that let me go

There is something about this presenter that makes me feel like i should keep watching......And I'm gay