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Animation 14: Computer Science and Music
- 1. Computer Science & Music SeanBechhofer University of Manchester ! @seanbechhofer ! Animation 14 Awards Day,July 2014
- 2. Computer Science isn't justabout Computers
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- 16. Cool! How does itwork?
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- 26. These features allow usto identify people. We can do the same with sound or music
- 27. Feature Extraction We cananalyse a piece of music to find out what sounds are happening at different times ! Low frequencies: e.g.Bass Mid frequencies: e.g.Vocals High frequencies: e.g.Cymbals This gives us a Spectrogram
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- 35. “Motion Picture Experts GroupPhase 1 Audio Layer III” Let's stick with mp3...
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- 37. Turning waves intonumbers -4,0,4,7,6,3,0,-1,1,3,4,3,-1,-5,-8,-7,-5,-1,0,-2,-4,-5,-4
- 38. Numbers! 0000000 49 4433 03 00 00 00 04 1b 55 54 4c 45 4e 00 00! 0000010 00 0f 40 00 01 ff fe 33 00 30 00 35 00 30 00 31! 0000020 00 33 00 41 50 49 43 00 01 02 9e 00 00 00 69 6d! 0000030 61 67 65 2f 6a 70 65 67 00 03 00 ff d8 ff e0 00! 0000040 10 4a 46 49 46 00 01 01 00 00 01 00 01 00 00 ff! 0000050 db 00 43 00 05 03 04 04 04 03 05 04 04 04 05 05! 0000060 05 06 07 0c 08 07 07 07 07 0f 0b 0b 09 0c 11 0f! 0000070 12 12 11 0f 11 11 13 16 1c 17 13 14 1a 15 11 11! 0000080 18 21 18 1a 1d 1d 1f 1f 1f 13 17 22 24 22 1e 24! 0000090 1c 1e 1f 1e ff db 00 43 01 05 05 05 07 06 07 0e! 00000a0 08 08 0e 1e 14 11 14 1e 1e 1e 1e 1e 1e 1e 1e 1e!
- 39. Lots of Numbers! Over44,000 samples per second for high quality audio That's 31.5 MB for a 3-minute song Only 250 songs on an 8Gb music player.
- 41. Lots of Numbers! Over44,000 samples per second for high quality audio That's 31.5 MB for a 3-minute song Only 250 songs on an 8Gb music player.
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- 54. Lossy Encoding My nms Sn nd m Cmptr Scntst t th nvrsty f Mnchstr. ! lk t ply th gtr.lk t g scb dvng nd shrks r my fvrt nmls. 111 letters
- 55. Lossy Encoding My nameis Sean and I'm a Computer Scientist at the University of Manchester. ! I like to play the guitar.I like to go scuba diving and sharks are my favourite animals. 170 letters
- 56. Lossy Encoding Original =170 letters,New = 111 letters ! 65% smaller! ! Imagine if we had to pay £1 per letter! !So this is“cheaper”,but we might need some extra effort to read it
- 57. Lossy Encoding ae iea a I a oue iei a e Uiei o aee. I ie o a e uia.I ie o o ua ii a a ae aouie aia. 53 letters
- 58. Lossy Encoding My nameis Sean and I'm a Computer Scientist at the University of Manchester. ! I like to play the guitar.I like to go scuba diving and sharks are my favourite animals. 170 letters
- 59. Good FastCheap Trade Offs: PickAny Two!
- 60. Everyday Encoding r ugng to the gig? I <3 daft punk! not if i c u first :-) yeah shld be gr8 me 2! c u l8r lol ;-)
- 61. How high can youhear?
- 62. How high? 1.Everybody standup! 2.You will hear a tone play. 3.When you can no longer hear the tone,sit down! Thisisanexperiment,notacompetition—no cheating!
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- 65. Fewer Numbers 0000000 4944 33 03 00 00 00 04 1b 55 54 4c 45 4e 00 00! 0000010 00 0f 40 00 01 ff fe 33 00 30 00 35 00 30 00 31! 0000020 00 33 00 41 50 49 43 00 01 02 9e 00 00 00 69 6d! 0000030 61 67 65 2f 6a 70 65 67 00 03 00 ff d8 ff e0 00! 0000040 10 4a 46 49 46 00 01 01 00 00 01 00 01 00 00 ff! 0000050 db 00 43 00 05 03 04 04 04 03 05 04 04 04 05 05! 0000060 05 06 07 0c 08 07 07 07 07 0f 0b 0b 09 0c 11 0f! 0000070 12 12 11 0f 11 11 13 16 1c 17 13 14 1a 15 11 11! 0000080 18 21 18 1a 1d 1d 1f 1f 1f 13 17 22 24 22 1e 24! 0000090 1c 1e 1f 1e ff db 00 43 01 05 05 05 07 06 07 0e! 00000a0 08 08 0e 1e 14 11 14 1e 1e 1e 1e 1e 1e 1e 1e 1e!
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- 70. “It's hard tomake predictions, particularly about the future.” Niels Bohr (1885-1962)
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- 72. 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 0 350 7001050 1400 1230 1056 845 608 360 145 58 12 6 1 Million Monthly users
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- 88. Popularity One Direction Metallica Daft Punk3.4 million listeners 2.5 million listeners 0.7 million listeners
- 89. Popularity One Direction Metallica Daft Punk 233million listens 2.5 million listeners 173 million listens 3.4 million listeners 36 million listens 0.7 million listeners ?
- 90. This works for lotsof stuff!
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- 97. Mona Lisa Leonardo daVinci 1503-1505 Louvre Museum
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- 103. Computer Science isn'tjust about Computers We can't predict what the impact of new technologies will be Sharks are great! Eat lots of broccoli! Things to Remember
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- 105. Image Credits • DaftPunk: https://www.flickr.com/photos/caesarsebastian/1031975612/ • Red Army: https://www.flickr.com/photos/patsemchism/345981835 • Constellation: http://commons.wikimedia.org/wiki/File:Ursa_major_constellation_map.png • Great Wave: Public domain,Katsushika Hokusai ( 飾北斎) • Etihad: http://en.wikipedia.org/wiki/File:City_Of_Manc_Stadium.jpg • Hammerhead Shark: https://www.flickr.com/photos/barrypeters/4242623174/ • Oceanic White Tip: https://www.flickr.com/photos/michaelaston/2062803551 • Ear: https://www.flickr.com/photos/tbisaacs/3911558890/ • Fraunhofer: http://www.mp3-history.com/ • Niels Bohr: http://www.clipartsfree.net/clipart/89-niels-bohr-clipart.html • Mark Zuckerberg: http://www.fotopedia.com/items/flickr-2326586665 • Cassette Tapes: https://www.flickr.com/photos/cass_ette/4571540478 • One Direction: http://en.wikipedia.org/wiki/File:One_Direction_at_the_Logies_Awards_2012.jpg • Metallica: http://en.wikipedia.org/wiki/File:Metallica_London_2008-09-15_Kirk_and_James.jpg • CD Rack: http://en.wikipedia.org/wiki/File:CD_rack.JPG • Books: https://www.flickr.com/photos/meeli/2854849909 • Beans: http://en.wikipedia.org/wiki/File:No_name_sans_nom_beans_feves.jpg • Video Games: http://commons.wikimedia.org/wiki/File:Videogameretaildisplay.jpg • Broccoli: http://commons.wikimedia.org/wiki/File:Basket_of_broccoli_in_Singapore_market.jpg • Mona Lisa: Public Domain • Other Images: Sean Bechhofer