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2. Crystal earpiece - Wikipedia

   en.wikipedia.org/wiki/Crystal_earpiece

   Their peak use was probably with 1960s era transistor radios and hearing aids. They are not used with modern portable media players due to unacceptable sound quality. The main causes of poor performance with these earpieces are low diaphragm excursion, nonlinearity, in-band resonance and the very short horn shape of the earpiece casing.

3. SoundBite Hearing System - Wikipedia

   en.wikipedia.org/wiki/SoundBite_Hearing_System

   SoundBite Hearing System is a non-surgical bone conduction prosthetic device that transmits sound via the teeth. It is an alternative to surgical bone conduction prosthetic devices, which require surgical implantation into the skull to conduct sound.

4. HIV/AIDS in Nepal - Wikipedia

   en.wikipedia.org/wiki/HIV/AIDS_in_Nepal

   As of December 2007, the Government of Nepal reported 1,610 cases of AIDS and 10,546 HIV infections, which has grown to 13,000 infections by World AIDS Day 2008. [3] UNAIDS estimates from 2007 indicate that approximately 75,000 people in Nepal are HIV-positive, including all age groups. The Government of Nepal's National Center for AIDS & STD ...

5. Bone conduction - Wikipedia

   en.wikipedia.org/wiki/Bone_conduction

   Bone conduction is one reason why a person's voice sounds different to them when it is recorded and played back. Because the skull conducts lower frequencies better than air, people perceive their own voices to be lower and fuller than others do, and a recording of one's own voice frequently sounds higher than one expects (see voice confrontation).

6. Unilateral hearing loss - Wikipedia

   en.wikipedia.org/wiki/Unilateral_hearing_loss

   Profound unilateral hearing loss is a specific type of hearing loss when one ear has no functional hearing ability (91 dB or greater hearing loss). People with profound unilateral hearing loss can only hear in monaural (mono). Profound unilateral hearing loss or single-sided deafness, SSD, makes hearing comprehension very difficult.

7. Auditory hallucination - Wikipedia

   en.wikipedia.org/wiki/Auditory_hallucination

   There are three main categories into which the hearing of talking voices often fall: a person hearing a voice speak one's thoughts, a person hearing one or more voices arguing, or a person hearing a voice narrating their own actions. [4] These three categories do not account for all types of auditory hallucinations. Hallucinations of music also ...