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136: Raise Your Voice 



La la la laaaaaaaaaa~ We explore the world of voice and speech. Learn about the history of "the robot voice" and the crazy machines that made synthesized speech possible, we turn into Munchkins and find out why helium makes your voice squeaky, famous speeches every pub trivia team needs to know, and how to speak Australian!

ALSO: Congrats Rob!

RUNTIME: 51 minutes 44 seconds

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Featured Interlude Music:

"Voices Carry" by 'Til Tuesday  Amazon | iTunes 


References (6)

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Reader Comments (6)

After hearing your helium voice experiment on this episode, you might be curious to learn about sulfur hexafluoride. As a physics graduate student, we would do outreach demonstrations to various groups, and one demo was speaking after inhaling helium. The follow-up to that was inhaling sulfur hexafluoride and speaking, which lowers the pitch of the speaker's voice. I first heard this done by a female graduate student who had a rather high pitched voice, and it was remarkable how low her voice got. And since sulfur hexafluoride is denser than air, we were instructed to bend at the waist to get gravity's help getting it out of our lungs after the demo, although I imagine it would work its way out eventually.

Here's a video.

November 29, 2014 | Unregistered CommenterChris G

Oh no.....That was the WORST Aussie accent ever :P
We don't all talk that way... :-/ he he..

December 2, 2014 | Unregistered CommenterDarryn..

Hey, I'm a long-time listener to the show. I just wanted to tell you how impressed I was with how you handled the 'is helium dangerous' issue. You know that you have a lot of younger listeners, and I really liked how you explained what the dangers were in a sensible and respectful way. You didn't talk down to your younger listeners, and you didn't pretend that breathing helium wasn't a fun thing to do. But you gave them all the facts so they could make the right choices themselves. Nice work!

December 5, 2014 | Unregistered CommenterMills

Nice show! Seconding Darryn though. I'm Australian and if I head someone speaking like that I would probably ask them where they hailed from!

December 8, 2014 | Unregistered CommenterJared

I got such a good information on this topic it’s a very interesting one. You made a good site and I have found a similar website,
please check this one sulfur hexafluoride visit the site to know more about coopersenviro.

December 12, 2018 | Unregistered CommenterPrince Arora

I got such a good information on this topic it’s a very interesting one. You made a good site and I have found a similar website,
please check this one transformer removal visit the site to know more about coopersenviro.

April 22, 2019 | Unregistered CommenterPrince Arora

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