A pure tone at has a sound pressure level of re

PHYSICS · Multi-part · Fermi University Physics · Oscillations, Waves & Acoustics · Biophysics & Medical Physics · Bioelectricity, the senses and the physics of the body

Forces, Machines and Signals, Ch Hearing: from air pressure to a gated channel

Problem

A pure tone at

500\,\mathrm{Hz}

has a sound pressure level of

40\,\mathrm{dB}

20\,\mathrm{\mu Pa}

. Take the specific acoustic impedance of air as

Z = 413\,\mathrm{Pa\,s\,m^{-1}}

. ((a)) Find the rms sound pressure. ((b)) Find the intensity. ((c)) Find the rms particle displacement at the eardrum.

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