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ToneTester is a Mac application that tests hearing. Specifically, it looks for offsets in how each of a person's ears hears pitch (the formal term for this is "binaural diplacusis" or "interaural pitch difference"). To use it, you adjust a slider until your ears hear the same pitch, and then ToneTester tells you the actual pitch difference.

What's New

First release


Mac OS X 10.2 or later

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ToneTester User Discussion

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blaiddwyn Member IconComment+0

generates alternating left-right tones, rather than continuous tones (producing binaural beats) which i had rather expected... great idea though - give it a twirl

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Version 1.0
matt21 Member IconReview+7

Wow! Just discovered I consistently hear a semi-tone higher in my right ear. I'm a musician and I had no idea. I know it's my ears and not ToneTester because switching headphones around made no difference in the results. Weird, man.

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Version 1.0
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> 5 1


Current Version (1.x)


Downloads 3,686
Version Downloads 2,604
License Free
Date 09 Dec 2005
Platform OS X / PPC 32 / Intel 32
Price Free
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