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A preamplifier (preamp) is an electronic amplifier that prepares a small electrical signal for further amplification or processing. They are typically used to amplify signals from microphones, instr...

How does an amplifier work? - Explain that Stuff


May 8, 2015 ... Amplifiers are the tiny components in hearing aids that make voices sound louder . They're also the gadgets in radios that boost faraway signals ...

ESP Amplifier Basics - How Audio Amps Work - Elliott Sound Products


Apr 6, 2005 ... Learn the basics of how audio amplifiers work. ... I will explain the basic amplifying elements, namely valves (vacuum tubes), bipolar transistors ...

How do we Hear? [Noisy Planet] - National Institutes of Health


Apr 3, 2014 ... The bones in your middle ear amplify, or increase, the sound vibrations and send them to the cochlea, a snail-shaped structure filled with fluid, ...

Amplify - definition of amplify by The Free Dictionary


Define amplify. amplify synonyms, amplify pronunciation, amplify translation, ... use) to increase the loudness of (sound), esp. by mechanical or electronic means . .... 2. go into detail, develop, explain, expand, supplement, elaborate, augment,  ...

Basic questions about transistor amplification - Electrical ...


Jan 5, 2012 ... Can anyone explain how a transistor can amplify voltage or current? According to ... Say for example, I want to amplify a sound wave. I whisper ...

Speakers Definition - The Tech Terms Computer Dictionary


Feb 27, 2010 ... Analog speakers simply amplify the analog electromagnetic waves into sound waves. Since sound waves are produced in analog form, digital ...

Principle of amplification - AstroSurf


Principle of amplification - Electronic tubes and transistors. ... very weak signal extracted from a CD reader or a tuner you can easily generate a deafening sound .

What is amplification factor (gain)? - Definition from WhatIs.com


But there is a limit to the amplification that can be attained this way. When amplifiers are cascaded, the later circuits receive noise at their inputs along with the ...

What is amplifier? - Definition from WhatIs.com


An amplifier is an electronic device that increases the voltage, current, ... are used in wireless communications and broadcasting, and in audio equipment of all ...

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How do hearing aids work? - Explain that Stuff


Apr 24, 2016 ... A hearing aid is simply an electronic sound amplifier. You've seen people on stage speak into a microphone and have their voices hugely ...

Refraction of Sound - HyperPhysics


But bending of sound waves does occur and is an interesting phenomena in ... But refraction can add some additional sound, effectively amplifying the sound.

The Difference Between Gain, Volume, Level, And Loudness | Off ...


This could be the increase in the raw signal from your guitar or microphone ... More specifically we use SPL (sound pressure level) to describe sound waves.