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Acoustic location
Videos
Acoustic location is a method of determining the position of an object or sound source by using sound waves. Location can take place in gases, liquids, and in solids.
Pre-World War II photograph of Japanese Emperor Shōwa (Hirohito) inspecting military acoustic locators mounted on 4-wheel carriages
Pre-World War II photograph of Japanese Emperor Shōwa (Hirohito) inspecting military acoustic locators mounted on 4-wheel carriages
Sound location equipment in Germany, 1939. It consists of four acoustic horns, a horizontal pair and a vertical pair, connected by rubber tubes to ste
Sound location equipment in Germany, 1939. It consists of four acoustic horns, a horizontal pair and a vertical pair, connected by rubber tubes to stethoscope-type earphones worn by the two technicians left and right. The stereo earphones enabled one technician to determine the direction and the other the elevation of the aircraft.
A three-dimensional echo-sounding representation of a canyon under the Red Sea by survey vessel HMS Enterprise
A three-dimensional echo-sounding representation of a canyon under the Red Sea by survey vessel HMS Enterprise
Acoustic mirror
Videos
An acoustic mirror is a passive device used to reflect and focus sound waves. Parabolic acoustic mirrors are widely used in parabolic microphones to pick up sound from great distances, employed in sur
Acoustic location
…Both of these techniques, when used in water, are known as sonar; passive sonar and active sonar are both widely used. Acoustic mirrors and dishes, when using microphones, are a means of passive acoustic localization, but when using speakers are a means of active localization. Typically, more than…
4.5-metre-high (14 ft 9 in) WW1 concrete acoustic mirror near Kilnsea Grange, East Yorkshire, UK. The pipe which held the "collector head" (microphone
4.5-metre-high (14 ft 9 in) WW1 concrete acoustic mirror near Kilnsea Grange, East Yorkshire, UK. The pipe which held the "collector head" (microphone) can be seen in front of the structure.
Acoustic mirrors at RAF Denge
Acoustic mirrors at RAF Denge
A parabolic whispering dish that is part of an installation at Jodrell Bank Observatory
A parabolic whispering dish that is part of an installation at Jodrell Bank Observatory
A pair of smaller acoustic mirrors in a park in Muiderberg
A pair of smaller acoustic mirrors in a park in Muiderberg