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In electronics, motorboating is a type of low frequency parasitic oscillation (unwanted cyclic variation of the output voltage) that sometimes occurs in audio and radio equipment and often manifests itself as a sound similar to an idling motorboat engine, a "put-put-put", in audio output from speakers or earphones.
When receiving the noise signal, the amplifier and subwoofers responded with sound pressures ranging from 100 dB to 120 dB. The resulting rumble could be felt by audience members as well as heard. [1] For the film Earthquake, Sensurround was activated during the quake scenes to augment the conventional soundtrack. [5]
From about 1900 to the 1950s, the "lowest frequency in practical use" in recordings, broadcasting and music playback was 100 Hz. [9] When sound was developed for motion pictures, the basic RCA sound system was a single 8-inch (20 cm) speaker mounted in straight horn, an approach which was deemed unsatisfactory by Hollywood decisionmakers, who hired Western Electric engineers to develop a ...
The AOL.com video experience serves up the best video content from AOL and around the web, curating informative and entertaining snackable videos.
The Cerwin-Vega brand was split for some time across two companies; Gibson for Cerwin-Vega and CVDA Holdings for Cerwin-Vega Mobile. In both lines their products are mostly known for its woofers and subwoofers capable of delivering high sound level output with comparatively low frequency ranges using comparatively low power input, as well as the red ring commonly found on the surround of many ...
John Williams' music for Earthquake was the second of his trio of scores for large-scale disaster films, having previously scored The Poseidon Adventure and following with The Towering Inferno. [12] Williams scored Earthquake and The Towering Inferno during the summer of 1974, with both scores showing similarities to one another (notably ...
The magnitude 4.7 earthquake just north of Malibu on Thursday morning adds to what scientists say is an unusually active year for moderate earthquakes in Southern California.
The magnitude 4.4 earthquake that rattled Los Angeles on Monday was centered within one of the region's most potentially destructive fault systems, one capable of producing a magnitude 7.5 ...
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