| Issue |
Europhysics News
Volume 46, Number 1, January-February 2015
|
|
|---|---|---|
| Page(s) | 27 - 31 | |
| DOI | https://doi.org/10.1051/epn/2015105 | |
| Published online | 26 February 2015 | |
Hearing overcome uncertainty relation and measure duration of ultrashort pulses
1
The H. Niewodniczański Institute of Nuclear Physics, PAN, ul. Radzikowskiego 152, 31-342 Kraków, Poland
2
Cracow University of Technology, Institute of Physics, ul. Podchorążych 1, 30-084 Kraków, Poland
E-mail address: Marcin.Majka@ifj.edu.pl
The human hearing sense is an astonishingly effective signal processor. Recent experiments [1, 2, 3] suggest that it is even capable of overcoming limitations implied by the time-frequency uncertainty relation. The latter, mostly known from quantum mechanics, requires that the product of uncertainties in time and frequency, Δt∙Δf , cannot be smaller than the limiting value Δt∙Δf = (1/4π), which holds when the signal is a harmonically oscillating function with a Gaussian envelope.
© European Physical Society, EDP Sciences, 2015
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