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Bob Heil developed lines of radio headsets and components. [1] In 1982 Heil Sound introduced their HC Series elements, specifically the HC-4 and HC-5, which allowed the non-DSP transmitters of the time to produce different sounding audio by changing microphone elements. The most recent is the HC-6, which is used in many of their current ...
In 1973 he invented the Heil Talk Box, which was used by musicians such as Peter Frampton, Joe Walsh and Richie Sambora. [4] In 2007, he was invited to exhibit at the Rock and Roll Hall of Fame. [1] [5] Heil was also an innovator in the field of amateur radio, and manufactured microphones and satellite dishes for broadcasters and live sound ...
Heil Sound; JZ Microphones; Lauten Audio; Line 6; Manley Laboratories; M-Audio; ... The following is a list of defunct microphone manufacturers with articles. Aiwa ...
It used a 30-watt driver and was released to the mass music market in early 1969, two years before Bob Heil's talk box became widely available. The Bag is claimed to have been designed by Doug Forbes, [ 13 ] [ 14 ] who states that exactly the same concept (speaker attached to a plastic tube and inserted into the mouth) had previously been ...
Active noise-cancelling headphones use a microphone, amplifier, and speaker to pick up, amplify, and play ambient noise in phase-reversed form; this to some extent cancels out unwanted noise from the environment without affecting the desired sound source, which is not picked up and reversed by the microphone. They require a power source ...
Electret materials have been known since the 1920s and were proposed as condenser microphone elements several times, but they were considered impractical until the foil electret type was invented at Bell Laboratories in 1961 by Gerhard Sessler and James West, using a thin metallized Teflon foil.
In past decades, ESS of California produced a series of hybrid loudspeakers using such tweeters, along with conventional woofers, referring to them as Heil transducers after their inventor, Oskar Heil. They are capable of considerable output levels and are rather more sturdy than electrostatics or ribbons, but have similar low-mass moving elements.
Although initially they could not get the resonant cavity microphone to work reliably, several products involving passive elements (PEs) were developed for the CIA as a result of the research. In 1965, the NRP finally got a reliably working pulsed cavity resonator, but by that time the CIA was no longer interested in passive devices, largely ...
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