5:33pm

Sun July 6, 2014
Brain Candy

NPR Listeners Show A Keen Ear For Temperature

Originally published on Mon July 7, 2014 9:23 am

Transcript

KELLY MCEVERS, HOST:

Yesterday on the show, we played a couple of sounds for you.

(SOUNDBITE OF WATER POURING)

MCEVERS: One is the sound of hot water being poured into a glass, the other is of cold water being poured into an identical glass. We asked you to go on our website and tell us whether you could tell which was which. And a lot of you took us up on it - like 30,000 of you. And 80 percent of you guessed that this...

(SOUNDBITE OF WATER POURING)

MCEVERS: ...Was cold water. You were right. This...

(SOUNDBITE OF WATER POURING)

MCEVERS: ...Of course is hot water. Ninety-one percent of you got that one right. Our poll was based on a larger experiment that found nearly all people surveyed could tell the difference between hot and cold by sound alone. The firm behind the experiment hopes to use the findings to make better sounds for ads, for example, to make a cold beer sound colder by accentuating the high-pitched ping at the end of the pour. Cold water is more viscous, or sticky, than hot water. That's what makes that high pitched ringing, and it's what tells your brain - this glass of water is cold - before you even take a sip. Transcript provided by NPR, Copyright NPR.