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The 1925 paper [1] of Chester W. Rice and Edward W. Kellogg, fueled by advances in radio and electronics, increased interest in direct radiator loudspeakers. In 1930, A. J. Thuras of Bell Labs patented (US Patent No. 1869178) his "Sound Translating Device" (essentially a vented box) which was evidence of the interest in many types of enclosure design at the time.
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 ...
A rotary woofer is a subwoofer-style loudspeaker which reproduces very-low-frequency content by using a conventional speaker voice coil's motion to change the pitch (angle) of the blades of an impeller rotating at a constant speed. The pitch of the fan blades is controlled by the audio signal presented to the voice coil, and is able to swing ...
What Makes Coligny Beach’s Water So Blue? The sand on Hilton Head Island is bright white, blissfully soft, and very fine, and the water is shallow, especially at low tide.
Shake Shack posted preliminary fourth quarter results that beat expectations, but investors don't seem convinced.Shares of the fast-casual chain fell 6% on Monday after the company reported same ...
Lady Gaga celebrates Super Bowl with 'sports' and 'spells' Gaga also took to social media on Sunday to celebrate Super Bowl 59 with a high-energy dance video.