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This is because an engine's cyclic nature makes analysis and noise cancellation easier to apply. Modern mobile phones use a multi-microphone design to cancel out ambient noise from the speech signal. Sound is captured from the microphone(s) furthest from the mouth (the noise signal(s)) and from the one closest to the mouth (the desired signal).
Most of the amplifiers produced by ACC were solid-state, but a few models later in production were valve amps. The company is remembered in particular for its Acoustic 361 bass stack, consisting of an Acoustic 360 bass pre-amplifier and one or two Acoustic 361 W-bins, each featuring a built-in 200-watt RMS power amplifier and a rear-facing 18" Cerwin-Vega loudspeaker.
The GV1400 Cavalcade was a Suzuki luxury touring motorcycle available from 1985 to 1988 in North America. It was available in Europe until 1991. It was available in Europe until 1991. There were three model lines, the GT, LX, and LXE.
The noise properties of valves at audio frequencies can be modelled well by a perfect noiseless valve having a source of voltage noise in series with the grid. For the EF86 low-noise audio pentode valve, for example, this voltage noise is specified (see e.g., the Valvo, Telefunken or Philips data sheets) as 2 microvolts integrated over a ...
There are two variations of the "Delta Blues" model, the Delta Blues with one fifteen-inch speaker or two ten-inch speakers. They use 12AX7 preamp tubes, EL84 power tubes, and have spring reverb tanks. From 1994 to 1997, a 15 watts amp with a 10 inches speaker was also produced, the Peavey Classic 20.
The first commercially produced amplifier with distortion of 0.1% was the LEAK Type 15 "Point One" of 1945, using KT66 vacuum tubes (valves) connected as triodes, with 26 dB feedback over 4 stages including the output transformer. In 1948 LEAK produced the TL/12 which was also rated at 0.1% but featured improved performance with 26 dB over 3 ...