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Analog Technology

Analog Wave


Definition :

An analog signal is one in which a base carrier's alternating current frequency is modified in some way, such as by amplifying the strength of the signal or varying the frequency, in order to add information to the signal.


An analog signal can be represented as a series of sine wave s. The term originated because the modulation of the carrier wave is analogous to the fluctuations of the human voice or other sound that is being transmitted.


A nominally continuous electrical signal that varies in amplitude or frequency in response to changes in sound, light, heat, position, or pressure.

Analog Processing:


Analog technology has been around for decades. It's not that complicated a concept and it's fairly inexpensive to use.


It is the process of taking an audio or video signal (in most cases, the human voice) and translating it into electronic pulses.


Analog Hearing Aid:

An analog hearing aid employs miniature devices, such as microphones, amplifiers, and resistors to alter an acoustic signal (a sound) electronically. The altered signal is then converted back to a sound wave and played into the ear canal.



  • Analog aids can be quite sophisticated and have many important features, so thery may still be good options for many people with hearing loss.
  • Analog aids may still be very suitable solutions for many peoples' hearing aid needs.
  • Least expensive type of hearing aid today.
  • Some are programmable for different environments and can be programmed for changing levels of hearing loss.
  • Make sounds loder but not discriminate among them.


  • Analog is not very good, they whistle with all the background noises it picks up, its impossible to communicate with someone in a noisy place!
  • Analog aids don't typically have as many adjustments or settings, but if fit well, they can be a very good hearing aids.
  • Analog system has noise i.e. random variations. As the signals copied and re-copied or transmitted over long distances these random variations become dominant.

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