# Sensory Neuroscience: Hearing and speech/Sound/key terms

### Parameters for describing sound

Wavelength
the distance between the endpoints of a cycle (two peaks, for example)
usually measured in cm
Frequency
number of oscillations in one second
frequency is a physical property in the world, but pitch is the mental experience of that property (the "highness" of a sound)
usually measured in Hz
Period
time required for one oscillation
usually measured in ms

$f=\frac{1}{T}$
$\lambda=\frac{c}{f}$

Amplitude
the magnitude of change in the pressure over one oscillation
Impedence
the reluctance with which the medium can be forced into oscillation

Last modified on 8 February 2009, at 02:43