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Musical acoustics deals with the way in which we hear and perceive musical sound, the instruments that produce it, and even the structure of melody and harmony.
The use of acoustic energy to "see" or detect objects underwater is analogous to the use of radar for detecting objects in air.
Acoustic signals are used to detect the presence and location of commercially valuable fish, to map the sea floor to determine the safest "avenues" for supertankers, and to explore the Earth's geological formations or search for oil deposits beneath the ocean floor.
Proper acoustic treatment can transform a muddy sounding room, having poor midrange definition and erratic bass response, into one that sounds clear and tight, and is a pleasure to work and listen in.
These MiniTraps (commercial acoustic panels) were installed under the peaked ceiling in the author's home recording studio to avoid focusing sound in the room to the area under the peak.
Acoustic treatment as described in this article goes a long way toward eliminating response-skewing reflections, and with a properly treated room, equalization may not be worth the effort and expense.