Acoustic Radiator definition of Acoustic Radiator in the Free Online Encyclopedia.

acoustic radiator [ə′küs·tik ′rād·ē‚ād·ər]

(engineering acoustics)

A vibrating surface that produces sound waves, such as a loudspeaker cone or a headphone diaphragm.

Acoustic Radiator

a device for the excitation of sound waves in an elastic medium. An acoustic radiator can be built by using various sound-producing means: vibrations of solids and surfaces in an elastic medium (a string with a sounding board, a plate, a membrane, and so on); vibrations in the air itself (whistles, sirens, organ pipes, or the human vocal apparatus); periodic variations of temperature in the medium (thermophone and ionophone); and so forth.

The most important characteristics of an acoustic radiator are the frequency radiation range, the radiating power, and the directivity (the distribution of the radiated energy in space). Depending on the application of an acoustic radiator, the requirements for these characteristics will be different. A loudspeaker, for instance, should radiate sound in a wide range of frequencies from 30 Hz to 16 kHz and uniformly in all directions; but the acoustic radiator of an ultrasonic flaw detector should produce a narrow directional beam of ultrasonic waves with a single frequency of several MHz. To obtain an acoustic radiator with the required characteristics, computations of its sound field are carried out. However, accurate solutions can be attained only for radiators of the simplest shapes (a pulsating sphere, a vibrating sphere, and so forth) under conditions of small vibration amplitudes of the radiating surface; the great variety of acoustic radiators are reduced to these simple radiator types or combinations thereof.

REFERENCE

Krasil’nikov, V. A. Zvukovye i ul’trazvukovye volny v vozdukhe, vode i tverdykh telakh, 3rd ed. Moscow, 1960.

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No references found	Owens Corning is developing an optimized trim material that will allow the exciter to be mounted directly to a trim panel, with no need for a separate grille or acoustic radiator surface. Rich and full, but not very deep. (WIP) by Sawyer, Christopher A. / Automotive Design & Production	acoustic logging acoustic Mach meter acoustic mass acoustic mass reactance Acoustic Materials acoustic measurement Acoustic Measurements acoustic memory acoustic microscope acoustic mine acoustic mode acoustic navigation acoustic nerve acoustic noise acoustic ocean-current meter acoustic ohm acoustic particle detection acoustic phonon acoustic plaster acoustic position reference system Acoustic Power Acoustic Probe acoustic radar acoustic radiation Acoustic Radiation Pressure Acoustic Radiator Acoustic Radiometer acoustic ratio acoustic reactance acoustic reactance unit acoustic receiver acoustic reciprocity theorem acoustic reflection coefficient acoustic reflectivity acoustic reflex acoustic reflex enclosure acoustic refraction acoustic regeneration Acoustic Resistance acoustic resistance unit acoustic resonance Acoustic Resonator acoustic scattering acoustic seal acoustic shadow acoustic shielding acoustic signal processing acoustic signature acoustic spectrograph acoustic spectrometer acoustic spectrum	Acoustic Position acoustic position reference system Acoustic Positioning and Navigation System acoustic power acoustic power Acoustic Prediction Program Acoustic Probe Acoustic Processing System Acoustic Processor Acoustic Processor Operating Station Acoustic Processor Technical Refresh Acoustic Processor/Tethered Sonar Acoustic Product Request Acoustic Products Division Acoustic Proficiency Trainer acoustic projection Acoustic Projection System Acoustic Protective Measures Acoustic Pulse Reflectometry Acoustic Puncture Assist Device Acoustic Quantification Acoustic radar Acoustic radar acoustic radiation acoustic radiation acoustic radiation acoustic radiation Acoustic Radiation Force Impulse Imaging acoustic radiation pressure acoustic radiation pressure Acoustic Radiator Acoustic radiometer Acoustic Range Finding/Finder Acoustic Range Prediction System Acoustic Rapid COTS Insertion acoustic ratio acoustic reactance acoustic reactance acoustic reactance unit acoustic receiver acoustic reciprocity theorem Acoustic Recording Unit Acoustic Reference Level Plan acoustic reflection coefficient acoustic reflectivity Acoustic reflex Acoustic reflex Acoustic reflex Acoustic reflex Acoustic reflex acoustic reflex enclosure Acoustic Reflex Latency Test acoustic reflex test acoustic reflex test acoustic reflex test acoustic reflex test acoustic reflex test acoustic refraction acoustic regeneration Acoustic Research Acoustic Research Center

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Owens Corning is developing an optimized trim material that will allow the exciter to be mounted directly to a trim panel, with no need for a separate grille or acoustic radiator surface.

Rich and full, but not very deep. (WIP) by Sawyer, Christopher A. / Automotive Design & Production

acoustic logging

acoustic Mach meter

acoustic mass

acoustic mass reactance

Acoustic Materials

acoustic measurement

Acoustic Measurements