acoustic wave

Pressure traveling through

An acoustic wave is a pressure disturbance that travels through a medium—air, water, or solid material—transferring energy without permanently displacing matter.

Sound is the most familiar example: vibrations compress and expand the medium in patterns our ears interpret as noise, speech, or music.

Acoustic waves from the explosion rattled windows a mile away.

physics

propagation

Act of spreading widely

medium · longitudinal · transverse · interference · diffraction · refraction · reflection · attenuation · dispersion · Hertz

sonar

echo

Reflected sound wave

depth sounding · submarine · hydrophone · transducer · pulse · detection · ranging · bathymetry · fish finder · reflection

resonance

harmonics

Frequencies above the fundamental

impedance · coupling · cavity · feedback · sustain · bandwidth · natural frequency · overtone · fundamental · antinode

propagation

transmission

Sending of information

medium · air · water · solid · speed of sound · Mach · ray · beam · directivity · coupling

music

pitch

Frequency of sound

  • toneQuality of sound
  • timbreSound's distinctive character
  • harmonyAgreement or musical blend

melody · note · chord · octave · volume · dynamics · tuning · instrument · vibrato · overtone

Opposites
wave propagation medium

acoustic waveelectromagnetic wave

Self-propagating field oscillation

light wave · electromagnetic radiation · radio wave · microwave · X-ray

perceptibility

acoustic waveultrasound

Inaudible high-frequency waves

infrasound · silence

Family

wave, waves, waving, waver, waved, acoustic, acoustics, waveform, waveguide

Familiarity
Top 500,000
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