https://padlet.com/akicatdoc/lua9w39hg9sd en-us 2016-02-10 02:34:16 UTC 2023-02-27 19:33:41 UTC hello@padlet.com https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94229046

- In 1958, the American company Koss created the first hi-fi stereo headphones. 
- Made especially for record players. 


- Inventor of noise reduction headphones: Dr. Amar Gopal Bose, founder of Bose Corporation. 
- Bose Corporation: Private consumer electronics corporation
- First introduced in the year 1989. 
- Made for pilots and for the aviation, aircraft, industry. 

]]> 2016-02-10 02:43:55 UTC https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94229046 https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94229071
Books:
"How Cool Stuff Works" Written by: Christ Woodland, Luke Collins, Clint WItchalls, Ben Morgan, and James Flint. (pg. 74)

Websites:
- http://visual.ly/brief-history-noise-cancelling-headphones 
- http://www.slideshare.net/coolpheadphones/health-risk-of-noise-cancelling-headphones 
- http://www.hellou.co.uk/2015/03/revealed-much-costs-make-dre-beats-headphones-40759/ 
- http://www.consumerreports.org/cro/news/2013/10/does-bose-make-the-best-noise-canceling-headphones/index.htm 
- http://hackerspace.kinja.com/uses-and-benefits-of-noise-cancelling-headsets-1615304226

Pictures:
- http://www.blogcdn.com/www.engadget.com/media/2013/07/top-home.jpg 
- http://classicalmusicheadphones.audio/best-noise-cancelling-headphones/
- http://coolmaterial.com/roundup/history-of-headphones/ 
- http://de63f2mftrd23.cloudfront.net/image/large/110838.front.jpg 
- http://coolmaterial.wpengine.netdna-cdn.com/wp-content/uploads/2012/07/history-of-headphones-1881.jpg
- http://i.kinja-img.com/gawker-media/image/upload/s--2c7-aXL4--/jlmpggwbs4kupavjfzms.jpg ]]> 2016-02-10 02:44:35 UTC https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94229071 akicatdoc https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94512628
-Microphone
The small microphone in the earpiece            picks up the loud noises.
-Noise-cancelling circuitry
In the ear piece electronics create a                  wave that cancels sound. It cancels all the annoying loud sounds.
-Battery
Battery poweredere]]> 2016-02-11 05:14:24 UTC https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94512628 https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94513023 2016-02-11 05:23:54 UTC https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94513023 https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94513640 2016-02-11 05:36:03 UTC https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94513640 https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94558771
Normal Headphones:
As people use the headphones they may be unaware of dangers such as roads. Having the volume up to the highest may damage the eardrum over time.

Noise-cancelling Headphones: 
- No dangers and health threats
- Beneficial for reducing stress levels
- Warning: Cheap and low quality headphones may produce unpleasant hissing sound. ]]> 2016-02-11 11:47:29 UTC https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94558771 https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94780244 2016-02-12 04:56:40 UTC https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94780244 akicatdoc https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94780341
Normal headphones: 
approximately "$14

Bose Sound Proof head phones:
aproximately 300$

Beats made of rubies and diamonds aproximatley: 1 million $]]> 2016-02-12 04:59:12 UTC https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94780341 imsoawesome2003 https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94780384
1881: First headphones made for radio communications.
1910: First manufactured headphones produced and solt to the navy.
1937: First dynamic headphones are sold.
1958: First stereo headphones made.
2001: Ipods are made.
2008: Beats are made and produce good sound quality.

]]> 2016-02-12 05:00:27 UTC https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94780384 https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94780457 2016-02-12 05:02:45 UTC https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94780457 akicatdoc https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94780586 Ririka,
Caterina,
Roka]]> 2016-02-12 05:06:24 UTC https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94780586 imsoawesome2003 https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94781016
- Call center industry and loud industries 
- Leisure, travel, and people, including children, with special needs. 
- Children with hearing speech disabilities use noise reducing headphones
- People who had a cochlear implant often use there heaphones to cancel out the unwanted noises when listening to music
- Those with autism or impaired focus also benefit from the reduced auditory stimulation]]> 2016-02-12 05:15:42 UTC https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94781016 https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94781139 2016-02-12 05:19:53 UTC https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94781139 imsoawesome2003 https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94781212 2016-02-12 05:22:29 UTC https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94781212 https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94781238 2016-02-12 05:23:21 UTC https://padlet.com/akicatdoc/lua9w39hg9sd/wish/94781238 https://padlet.com/akicatdoc/lua9w39hg9sd/wish/95090816 2016-02-15 10:45:51 UTC https://padlet.com/akicatdoc/lua9w39hg9sd/wish/95090816 https://padlet.com/akicatdoc/lua9w39hg9sd/wish/95092021
- People especially kids are able to concentrate and contain less stress due to the cancellation of the unwanted noise. 
- Less medical problems between people because of the decrease in noise. 

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