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Tests?

"Say two sound sources: A and B, both generated pure tones above 20 kHz at frequency f(A) and f(B), respectively. For most people, if you play one source at time, they will not be able to hear. Now if you play two sources A and B at same time, then they one can hear."

This is a plausible hypothesis. Do you know if tests like this have actually been published? It would be interesting to know how loud the test signals need to be to provoke sufficient non-linear distortion in the ear for audibility of the beat tone.

If you try tests like this, take care not to burn out your tweeters in a quest to hear something. This kept me from trying the test at any significant volume level, so I was not able to hear any beat tones, except when I artificially introduced them by mixing the two tones in one channel and deliberately introducing distortion using SoundForge.

Tony Lauck

"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar


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  • Tests? - Tony Lauck 12:15:15 03/24/09 (1)

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