Comments on: Combination Tones and the Non-Linearities of the Human Ear. http://www.earslap.com/doodle/combination-tones-and-the-non-linearities-of-the-human-ear Fri, 03 Feb 2012 06:55:42 -0800 hourly 1 By: Nick http://www.earslap.com/doodle/combination-tones-and-the-non-linearities-of-the-human-ear/comment-page-1#comment-3258 Nick Tue, 06 Sep 2011 02:10:47 +0000 http://www.earslap.com/?p=318#comment-3258 Absolutely fantastic! I love it! Absolutely fantastic! I love it!

]]> By: Juan Manuel http://www.earslap.com/doodle/combination-tones-and-the-non-linearities-of-the-human-ear/comment-page-1#comment-2702 Juan Manuel Sat, 16 Jul 2011 06:20:06 +0000 http://www.earslap.com/?p=318#comment-2702 Excellent! Looking for some examples of this phenomenon and found great ones! Excellent! Looking for some examples of this phenomenon and found great ones!

]]> By: Akkie http://www.earslap.com/doodle/combination-tones-and-the-non-linearities-of-the-human-ear/comment-page-1#comment-2155 Akkie Sun, 08 May 2011 16:50:28 +0000 http://www.earslap.com/?p=318#comment-2155 OOI! shit! That hurt! omg ._: auuh OOI! shit! That hurt! omg ._: auuh

]]> By: Batuhan http://www.earslap.com/doodle/combination-tones-and-the-non-linearities-of-the-human-ear/comment-page-1#comment-1985 Batuhan Sat, 30 Apr 2011 08:53:46 +0000 http://www.earslap.com/?p=318#comment-1985 Hi David, it is because the effect is there when each tone is provided by a different speaker. The examples above are in stereo, and each speaker plays a single tone. If you turn down your left sound monitor for example, you will hear one tone from your right speaker. If you turn down right only, you will hear a single tone from the left. If both are on, you will hear three tones. You can also record the output with a mic and observe the spectrogram though I've never tried it. Actually if I know correctly, most of the combination tones you hear are emiitted by your ears physically (that is if your ers are healthy, this is called otoacoustic emission). I've read that doctors use special microphones attached to your ear to capture these combination tones emitted from the ear to see if your ear is physically ok in some way. http://en.wikipedia.org/wiki/Otoacoustic_emission Hi David, it is because the effect is there when each tone is provided by a different speaker. The examples above are in stereo, and each speaker plays a single tone. If you turn down your left sound monitor for example, you will hear one tone from your right speaker. If you turn down right only, you will hear a single tone from the left. If both are on, you will hear three tones.

You can also record the output with a mic and observe the spectrogram though I’ve never tried it.

Actually if I know correctly, most of the combination tones you hear are emiitted by your ears physically (that is if your ers are healthy, this is called otoacoustic emission). I’ve read that doctors use special microphones attached to your ear to capture these combination tones emitted from the ear to see if your ear is physically ok in some way.

http://en.wikipedia.org/wiki/Otoacoustic_emission

]]> By: David http://www.earslap.com/doodle/combination-tones-and-the-non-linearities-of-the-human-ear/comment-page-1#comment-1982 David Sat, 30 Apr 2011 06:47:47 +0000 http://www.earslap.com/?p=318#comment-1982 How do you know that the nonlinearity is in the ear/brain, and not in the sound card or speakers? How do you know that the nonlinearity is in the ear/brain, and not in the sound card or speakers?

]]> By: Travis http://www.earslap.com/doodle/combination-tones-and-the-non-linearities-of-the-human-ear/comment-page-1#comment-1821 Travis Tue, 26 Apr 2011 15:59:50 +0000 http://www.earslap.com/?p=318#comment-1821 I was not able to hear it until I turned it up quite loud. It's almost painful to hear. I was not able to hear it until I turned it up quite loud. It’s almost painful to hear.

]]> By: Navayauvana dās http://www.earslap.com/doodle/combination-tones-and-the-non-linearities-of-the-human-ear/comment-page-1#comment-1708 Navayauvana dās Sun, 24 Apr 2011 10:13:05 +0000 http://www.earslap.com/?p=318#comment-1708 Very cool demo. Thanks for putting in the work to put this together. Much appreciated! Very cool demo. Thanks for putting in the work to put this together. Much appreciated!

]]> By: Andy http://www.earslap.com/doodle/combination-tones-and-the-non-linearities-of-the-human-ear/comment-page-1#comment-1608 Andy Fri, 22 Apr 2011 03:19:21 +0000 http://www.earslap.com/?p=318#comment-1608 Very nice, i had to listen to it twice before hearing Ode to Joy. Very nice, i had to listen to it twice before hearing Ode to Joy.

]]> By: Dimitri http://www.earslap.com/doodle/combination-tones-and-the-non-linearities-of-the-human-ear/comment-page-1#comment-1120 Dimitri Mon, 18 Apr 2011 01:19:50 +0000 http://www.earslap.com/?p=318#comment-1120 Great example. Even though I think my head hurts a bit now lol Great example. Even though I think my head hurts a bit now lol

]]> By: Joe http://www.earslap.com/doodle/combination-tones-and-the-non-linearities-of-the-human-ear/comment-page-1#comment-1020 Joe Sun, 17 Apr 2011 17:03:42 +0000 http://www.earslap.com/?p=318#comment-1020 Very cool post. Have known about these difference tones for a while but this was an awesome demonstration Very cool post. Have known about these difference tones for a while but this was an awesome demonstration

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