Speakers & Microphones Mark Koh and Mike Renz. The Technology Speaker - an electroacoustic...
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Transcript of Speakers & Microphones Mark Koh and Mike Renz. The Technology Speaker - an electroacoustic...
Speakers & MicrophonesMark Koh and Mike Renz
The Technology
• Speaker - an electroacoustic transducer that produces sound in response to an electrical audio signal input.
• Microphone - an acoustic-to-electric transducer or sensor that converts sound into an electrical signal.
Speakers and Microphones | 4.8.2011
Speakers: How They Work
Speakers and Microphones | 4.8.2011
Stupid Link?
Microphones: How They Work
Speakers and Microphones | 4.8.2011
The History of the Speaker
• Invented by Alexander Graham Bell in 1876 in the process of making the first telephone.
Speakers and Microphones | 4.8.2011
The History of the Microphone
• First conceptualized by Charles Wheatstone around 1827, but modernized in 1876 by Emile Berliner who invented the first microphone used as a telephone voice transmitter.
Speakers and Microphones | 4.8.2011
How the Speaker Has Changed
• Amplified telephone receiver• Cylinder compressed air amplifier• Moving coil dynamic drivers
Speakers and Microphones | 4.8.2011
How the Microphone Has Changed
• Stethoscopes • Voice transmitters • Carbon microphone• Broadcasting microphone• Dynamic microphone
Speakers and Microphones | 4.8.2011
Societal Benefits
• Made the invention of the telephone possible• Large impact on entertainment as a whole• Made hearing aids possible• Communications
Speakers and Microphones | 4.8.2011
Thank you!Questions, comments, concerns?
Speakers and Microphones | 4.8.2011
The Works
• Bellis, Mary. “The History of Microphones.” Inventors. About.com, n.d. Web. 8 Apr. 2011.
<http://inventors.about.com/ od/ mstartinventions/ a/ microphone.htm>.
• Daintith, John. “Microphone.” Dictionary of Physics. New York, NY: Facts on File, 1981. 118. Print.
• “Dynamic Microphones.” HowStuffWorks. Discovery Channel, n.d. Web. 6 Apr. 2011.
<http://electronics.howstuffworks.com/ gadgets/ audio-music/ question3092.htm>.
• Harris, Tom. “How Speakers Work.” hostuffworks. Discovery Channel, n.d. Web. 4 Apr. 2011.
<http://electronics.howstuffworks.com/ speaker6.htm>.
• “History of Speakers.” Articlebase. N.p., 12 Mar. 2009. Web. 6 Apr. 2011. <http://www.articlesbase.com/
history-articles/ history-of-speakers-813938.html>.
• Kirkland, Kyle. “Tape Recorders and Computer Disks.” Electricity and Magnetism. New York, NY: Facts on
File Inc., 2007. 36. Print.
Quantumplative Technologies | 12.7.2010
Quantumplative Technologies | 12.7.2010
