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2. Personal sound amplification product - Wikipedia

   en.wikipedia.org/wiki/Personal_sound...

   PSAP amplifiers are usually small simple devices. They amplify sounds and deliver the result to the ear (s) of the user. The main components are a microphone, amplifier, speaker, volume controller and power source. The microphone captures the sound (pressure) waves and converts them to an electric signal. The amplifier (an electronic circuit ...

3. History of hearing aids - Wikipedia

   en.wikipedia.org/wiki/History_of_hearing_aids

   History of hearing aids. Madame de Meuron with ear trumpet. The first hearing aid was created in the 17th century. The movement toward modern hearing aids began with the creation of the telephone, and the first electric hearing aid was created in 1898. By the late 20th century, the digital hearing aid was distributed to the public commercially.

4. Amplifier - Wikipedia

   en.wikipedia.org/wiki/Amplifier

   Amplifier. A McIntosh stereo audio amplifier with output power of 50 watts per channel used in home component audio systems in the 1970s. [1] Amplification means increasing the amplitude (voltage or current) of a time-varying signal by a given factor, as shown here. The graph shows the input (blue) and output voltage (red) of an ideal linear ...

5. 6 surprising signs of hearing loss - AOL

   www.aol.com/6-surprising-signs-hearing-loss...

   Watch for these lesser-known red flags of possible hearing loss. 1. You need to take naps. “Hearing loss is exhausting,” says Medwetsky. When you’re not hearing all the important speech ...

6. Audio induction loop - Wikipedia

   en.wikipedia.org/wiki/Audio_induction_loop

   Audio induction loop systems, also called audio-frequency induction loops (AFILs) or hearing loops, are an assistive listening technology for individuals with reduced ranges of hearing. [2] A hearing loop consists of one or more physical loops of cable which are placed around a designated area, usually a room or a building.

7. Clipping (audio) - Wikipedia

   en.wikipedia.org/wiki/Clipping_(audio)

   Clipping (audio) The altered peaks and troughs of the sine wave form displayed on this oscilloscope indicate the signal has been "clipped." Clipping is a form of waveform distortion that occurs when an amplifier is overdriven and attempts to deliver an output voltage or current beyond its maximum capability. Driving an amplifier into clipping ...