Medical research

A middle-ear microphone

(Medical Xpress) -- Cochlear implants have restored basic hearing to some 220,000 deaf people, yet a microphone and related electronics must be worn outside the head, raising reliability issues, preventing patients from swimming ...

Cardiology

Mobile phones offer heart lifeline

Technology that turns low-cost mobile phones into sophisticated stethoscopes could save thousands of lives in poor countries.

Biomedical technology

Turning hearing aids into noise-canceling devices

People with hearing aids and other assistive listening devices often struggle at crowded events, because the various sources of sound make it difficult to make out any one of them clearly.

Alzheimer's disease & dementia

Agitation and aggression monitoring in dementia

A rapidly aging population means an increased likelihood of the diseases of old age becoming more prevalent and more problematic for those afflicted with such illnesses, their family and carers, and overburdened healthcare ...

Microphone

A microphone (colloquially called a mic or mike; both pronounced /ˈmaɪk/) is an acoustic-to-electric transducer or sensor that converts sound into an electrical signal. In 1877, Emile Berliner invented the first microphone used as a telephone voice transmitter. Microphones are used in many applications such as telephones, tape recorders, karaoke systems, hearing aids, motion picture production, live and recorded audio engineering, FRS radios, megaphones, in radio and television broadcasting and in computers for recording voice, speech recognition, VoIP, and for non-acoustic purposes such as ultrasonic checking or knock sensors.

Most microphones today use electromagnetic induction (dynamic microphone), capacitance change (condenser microphone), piezoelectric generation, or light modulation to produce an electrical voltage signal from mechanical vibration.

This text uses material from Wikipedia, licensed under CC BY-SA