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Science Quickly

Human Ears Can Hear Better-Than-CD Quality (Just Barely)

Science Quickly

Scientific American

Science

4.41.4K Ratings

🗓️ 1 July 2016

⏱️ 3 minutes

🧾️ Download transcript

Summary

Listeners can tell the difference between CD-quality music and better-than-CD quality—but only if they train their ears first. Christopher Intagliata reports. Learn more about your ad choices. Visit megaphone.fm/adchoices

Transcript

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0:00.0

This is Scientific American's 60 Second Science.

0:05.0

I'm Christopher Intagiyata.

0:07.0

Jay-Z's title platform promises listener's CD quality streaming music

0:12.0

in all of its 44.1 kilohertz 16 bit glory.

0:16.0

Much better they say than compressed files like MP3s.

0:20.0

But why stop there?

0:21.0

Neil Young's Pono Music Store sells music that's even better than CD quality.

0:26.5

In a YouTube video for the service, Young compares MP3 listeners to scuba divers,

0:31.6

muddling around on the sea floor.

0:33.0

You know, you're walking around in the murk and there's big fish down there.

0:36.0

That's kind of like listening to an MP3.

0:38.0

CD listeners, they're underwater too.

0:41.0

And the only way to rise to the top, he says,

0:43.8

is to dial up sample rate to over four times that of CD

0:48.0

to 192 kilohertz.

0:50.0

But when you make it to 192, you actually break through the surface and your breathing air,

0:56.0

and the feeling is different. Actually is a visceral relief. You feel good.

1:02.0

But how good? What researchers, record producers, audio files, sound engineers want to know is

1:10.0

is C.D. Compact disc enough.

1:13.0

Joshua Rice, who leads audio engineering research at Queen Mary University of London.

1:17.8

The argument seemed to be never ending.

1:20.4

Rice took a stab at settling the argument with a meta analysis, a study of studies, on whether people can really perceive better than CD quality sound.

...

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