Acoustics and Psychoacoustics

Figure 2.6: Low to high frequencies wavelength

Octave

An increase of an octave is a doubling of frequency

Terminology includes

harmonics, subharmonics, resonant frequencies

Resonance

the natural rate of vibration of a mass.

This frequency is the frequency at which the mass most easily is set into vibration and at which the magnitude of vibration is greatest and decays most slowly

Resonant frequency

The following scenario is an example of what?:

when a drinking glass is shattered by a particular musical note, it is affected by its resonant frequency. If that amplitude of the frequency becomes great enough, the glass will distort and shatter

resonant frequency

Which wave is analyzed in terms of its sinusoidal components?

Complex wave

Fourier analysis

Analyzing a complex wave in terms of its sinusoidal components

Fundamental Frequency

The lowest frequency within a complex wave

Periodic sounds

complex sounds that repeat over time

Aperiodic sounds

vary randomly over time and do not have fundamental frequencies

_ sounds are perceived as nosie

aperiodic