Microphone

A microphone is an electromechanical device designed to convert sound into an electrical audio signal.
==Description==
A microphone converts an acoustic consisting of alternating high and low air pressure travelling through the air into a . To do this it uses some kind of pressure or movement sensor. The simplest kind of microphone is actually very similar in construction to an .
The analog audio signal can be fed into a computer's sound card where it is amplified and sampled to convert it into a digital waveform for storage or transmission.. 2002-11-04. This process is known as audio digitization.
==History==
The first device to digitize audio into a Macintosh computer was the MacRecorder, developed in 1985 by students of the University of California, Berkeley.BMUG and MacRecorder, 32by32. 1985-09-19. Starting in October 1990, the Macintosh LC and IIsi were introduced with the Apple Microphone and a built-in microphone port to digitize audio signals, at first only in 8-bit sound.Sound beginning for a well-spoken 'pizza box' by David Frith, The Sydney Morning Herald. 1990-10-22. The Macintosh Quadra 840AV was introduced in July 1993 with the Apple PlainTalk Microphone and built-in capability to record and play back 16-bit stereo sound at up to 48KHz.Quadra 840av, Low End Mac. 1993-07-29. In February 1997, the PowerBook 3400c was introduced with the first built-in PlainTalk microphone.Macintosh PowerBook 3400c, Apple Matters. Accessed 2021-10-08.
==References==
==See also==
*SimpleSound, software from Apple to record audio in classic Mac OS.
*Voice Memos, software from Apple to record audio in iOS and macOS
==External links==
* at Wikipedia
Category:Components
Category:Terms