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Audio Amplifier takes a small signal and increases

by:Yatai     2020-05-19
All frequencies must be amplified by the same factor to avoid change of waveform and off course the quality of sound. An efficient amplifier should multiply the amplitudes of all frequencies by the same waveform factor in order to give better output. If by chance different amplitudes of frequencies get multiplied then it may lead to many distortions. It should be made sure that amplifier provides enough power to boost loudspeakers, as otherwise the amplifiers are considered the most uncomplicated element of a sound system. A major difference between analog amplifier and digital amplifier is that in the analog type of amplifier the power is released from its output to the loudspeakers in sync with incoming audio waveform. Whereas digital amplifiers use high-frequency switching circuitry to modulate the output devices. There are many types of amplifiers available in the market e.g. power amplifiers, tube amplifiers etc. Power amplifiers have only single set of inputs and one pair of level controls; to match the amplifier to the rest of the system. The tube amplifiers which are used mostly in the musical instruments are basically different from other hi-fi or stereo amplifiers. The stereo equipment with in-built stereo amplifier should be as completely free from distortion. On the other hand Musical instrument amplifiers have always distortions but their basic settings are set by musicians to make the sound more expressive. A tube amp works in a different way as here the signals are more distorted before clipping than any other solid state amplifier. Its distortion increases slowly, and then more fast as the amp begins to clip. Solid state amplifier on the other hand works differently. Its working is opposite as the signal is non-distorting up to the point that it clips. Amplifiers are basically important components of speakers. All the electronic equipment's such as TV, computers and CD players use speaker to produce the sound. It would be interesting to know that sound is transmitted through air particles which in-turn form a pulse. Our ears pick up these fluctuations in air and later these signals are converted to electrical signals and transmitted to our brain.
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