speech amplifier

См. также в других словарях:

• speech amplifier — loudspeaker …   English contemporary dictionary

• Electronic amplifier — A practical amplifier circuit An electronic amplifier is a device for increasing the power of a signal. It does this by taking energy from a power supply and controlling the output to match the input signal shape but with a larger amplitude. In… …   Wikipedia

• Covox Speech Thing — One widely used variant The Covox Speech Thing (also known as Covox plug) was an external audio device attached to the computer to output digital sound. It was composed of the most primitive 8 bit DAC using a resistor ladder and an analogue… …   Wikipedia

• Semiconductor device — Semiconductor devices are electronic components that exploit the electronic properties of semiconductor materials, principally silicon, germanium, and gallium arsenide. Semiconductor devices have replaced thermionic devices (vacuum tubes) in most …   Wikipedia

• History of the transistor — Invention of the transistor= The first patent [patent|US|1745175|Julius Edgar Lilienfeld: Method and apparatus for controlling electric current first filed in Canada on 22.10.1925, describing a device similar to a MESFET] for the field effect… …   Wikipedia

• World Radio Laboratories — World Radio Laboratories, WRL, was a major supplier of amateur radio equipment from the 1950s through the 1970s. WRL was located in Council Bluffs, Iowa, and run by Leo Meyerson W0GFQ and his family.WRL manufactured some of its own products,… …   Wikipedia

• SCR-299 — The SCR 299 was a U.S. Signal Corps mobile military communications unit used during World War II. HistoryThe SCR 299 replaced SCR 197 and SCR 597, and was an effort to give a long range communication advantage to the U.S. Army and its allies. To… …   Wikipedia

• Sound reinforcement system — A sound reinforcement system is an arrangement of microphones, electronic signal processors, amplifiers, and loudspeakers that makes live or pre recorded sounds usually music or speech louder, or that distributes the sound to a larger or more… …   Wikipedia

• Amplificateur electronique — Amplificateur électronique Pour les articles homonymes, voir Amplificateur. Un amplificateur Hi Fi à tubes. Un amplificateur électronique (ou amplifica …   Wikipédia en Français

• Amplificateur Électronique — Pour les articles homonymes, voir Amplificateur. Un amplificateur Hi Fi à tubes. Un amplificateur électronique (ou amplifica …   Wikipédia en Français

• Amplificateur électronique — Pour les articles homonymes, voir Amplificateur. Un amplificateur Hi Fi à tubes. Un amplificateur électronique (ou amplificateur, ou ampli) est un système électronique …   Wikipédia en Français