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Waves, Oscillations & Acoustics

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Waves, Oscillations & Acoustics

Lissajous Figures

Complex geometric curves traced by combining two perpendicular simple harmonic oscillations.

x(t) = A sin(a t + δ), y(t) = B sin(b t) N/A Waves, Oscillations & Acoustics

Longitudinal Wave

A wave in which medium particles oscillate parallel to the direction of wave energy propagation.

s(x,t) = s_max cos(k x - ω t) m Waves, Oscillations & Acoustics

Loudness

The subjective human psychological sensation of sound strength, depending on physical intensity and ear frequency response.

Loudness ∝ log10(I / I0) Sone (or Phon)