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  2. Geometrical acoustics - Wikipedia

    en.wikipedia.org/wiki/Geometrical_acoustics

    Geometrical acoustics does not take into account such important wave effects as diffraction. However, it provides a very good approximation when the wavelength is very small compared to the characteristic dimensions of inhomogeneous inclusions through which the sound propagates.

  3. Sound energy - Wikipedia

    en.wikipedia.org/wiki/Sound_energy

    However, this range is an average and will slightly change from individual to individual. Sound waves that have frequencies below 16 Hz are called infrasoniciis and those above 20 kHz are called ultrasonic. Sound is a mechanical wave and as such consists physically in oscillatory elastic compression and in oscillatory displacement of a fluid.

  4. Wiggers diagram - Wikipedia

    en.wikipedia.org/wiki/Wiggers_diagram

    P=P wave, PR=PR interval, QRS=QRS complex, QT=QT interval, ST=ST segment, T=T wave Wiggers with jugular venous waveform Wiggers diagram with mechanical (echo), electrical (ECG), and aortic pressure (catheter) waveforms, together with an in-ear dynamic pressure waveform measured using a novel infrasonic hemodynography technology, for a patient ...

  5. Soundwave - Wikipedia

    en.wikipedia.org/wiki/Soundwave

    Download as PDF; Printable version; In other projects Wikidata item; ... Soundwave or Sound Wave may refer to: Sound, a vibration that propagates as an acoustic wave;

  6. Absorption (acoustics) - Wikipedia

    en.wikipedia.org/wiki/Absorption_(acoustics)

    The fraction of sound absorbed is governed by the acoustic impedances of both media and is a function of frequency and the incident angle. [2] Size and shape can influence the sound wave's behavior if they interact with its wavelength, giving rise to wave phenomena such as standing waves and diffraction.

  7. Acoustic theory - Wikipedia

    en.wikipedia.org/wiki/Acoustic_theory

    Acoustic theory is a scientific field that relates to the description of sound waves.It derives from fluid dynamics.See acoustics for the engineering approach.. For sound waves of any magnitude of a disturbance in velocity, pressure, and density we have

  8. Acoustic wave - Wikipedia

    en.wikipedia.org/wiki/Acoustic_wave

    An acoustic wave is a mechanical wave that transmits energy through the movements of atoms and molecules. Acoustic waves transmit through fluids in a longitudinal manner (movement of particles are parallel to the direction of propagation of the wave); in contrast to electromagnetic waves that transmit in transverse manner (movement of particles at a right angle to the direction of propagation ...

  9. Isotropic radiator - Wikipedia

    en.wikipedia.org/wiki/Isotropic_radiator

    An isotropic sound radiator is a theoretical loudspeaker radiating equal sound volume in all directions. Since sound waves are longitudinal waves , a coherent isotropic sound radiator is feasible; an example is a pulsing spherical membrane or diaphragm, whose surface expands and contracts radially with time, pushing on the air.

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