Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
mems microphone ppt

Microphone, microphone or microphone in common parlance(/maɪk/),  an acoustic to electric transducer or sensor that converts sound into an electrical signal in the air. Microphonesare used in many applications such as cell phones, hearing aids,warning systems for concert halls and public events, film images,live and recorded audio equipment, radios, megaphones, radioand television broadcasting and in computers for recordingvoice, VoIP, speech recognition, and for non-acoustic purposes such as ultrasonic checking or knock sensors.

Most microphones today uses electromagnetic induction(dynamic microphones), changing the capacity (condenser microphones) or piezoelectricity (piezoelectric microphones) for the electrical signal from the fluctuations in the air pressure.Microphones typically must be connected with the pre-amplifier,before the signal can be amplified with the power amplifier oraudio recorded.
In order to speak to large groups of people, there was a desire to increase the volume of the spoken word. Earliest knowndevice for this purpose dates back to 600 BC with the invention of the masks with specially designed holes mouth thatacoustically advanced voice in amphitheaters. In 1665, theEnglish physicist Robert Hooke was the first to experiment withmedia other than air, with the invention of "love call" from astretched wire with the Cup is attached at each end.

German inventor Johann Philipp Reis is a young soundtransmitter, which uses the metal strip attached to a vibratingmembrane, which will produce a periodic current. The bestresults were achieved with a "liquid transmitter design in telephone Scottish-American 1876 Alexander Graham Bell-diaphragm was attached to conducting rod in an acid solution.These systems, however, gave a very poor sound quality.

Important Note..!

If you are not satisfied with above reply ,..Please


So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page
Popular Searches: gb210 not work microphone, download mems microphone seminar report, microphone, samsung 3322 microphone, seminar report intelligent transport system 8 wireless microphone, samsung 1081e microphone problem, matlab code for speaker recognition from microphone,

Quick Reply
Type your reply to this message here.

Image Verification
Please enter the text contained within the image into the text box below it. This process is used to prevent automated spam bots.
Image Verification
(case insensitive)

Possibly Related Threads...
Thread Author Replies Views Last Post
  organizing user search histories ppt radhikam 0 459 02-08-2015, 07:47 AM
Last Post: radhikam
  ppt on mobile jammer radhikam 0 523 01-17-2015, 09:35 AM
Last Post: radhikam
  mobile jammers ppt radhikam 0 516 01-09-2015, 12:14 PM
Last Post: radhikam
  mobile incoming call indicator ppt radhikam 0 512 12-16-2014, 11:01 AM
Last Post: radhikam

Forum Jump:

Users browsing this thread: 1 Guest(s)