Hearing overcome uncertainty relation and measure duration of ultrashort pulses
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