What is sound?
The function of music...very cool clip (Devour)What is sound? Explains pretty much everything Johnny was talking about (Explain That Stuff!)A comprehensive sound wave resource, including a cool slow-motion clip on sound waves in wine glasses (University of Salford)The nature of sound (Physics Hypertextbook)Sound waves are 'longitudinal', like when you compress a slinky (University of Salford)Animation of how longitudinal waves travel (i.e. sound waves) (Wikimedia Commons)An article about synthesisers, but with some relevant sections on sound energy, wave shapes & harmonics (Explain That Stuff!)In space, no one can hear you scream (Qualitative Reasoning Group, Northwestern University)No sound in a vacuum, no sound in space (Physics Central)Human ears evolved from ancient fish gills (livescience)What evolved first, sight or hearing? This scientist tries to figure it out (Small Accidents of Evolution)Radar & sonar (Scholastic)Evelyn Glennie: A deaf virtuoso percussionist (Wikipedia)Sound & light compared (GCSE, BBC)Frequency & pitch (School of Physics, UNSW)What is frequency? (Indiana University)Scientists capture the sound of an atom for the first time (IFL)Speed of sound (Wikipedia)The speed of sound in different media (HyperPhysics, Georgia State University)How we speak & sing...turns out there's a lot to it (School of Physics, UNSW)Vocal sound production (Physics Hypertextbook)Hearing range for humans vs other species (Wikipedia)How well do dogs & other animals hear? (Louisiana State University)The evolution of hearing (Evolution of hearing)What are hertz? (Wikipedia)Animation: A sine wave with varying frequency (Wikipedia)The speed of sound appears to be just related to density...Lucy couldn't figure out if different atoms & molecules vibrate differently in this context (Explain That Stuff!)The speed of sound in other materials (NDT Resource Center)How do speakers work? (physics.org)Loudspeakers (Explain That Stuff!)Angus & Julia Stone (Wikipedia)AC/DC (Wikipedia)Animation: FM waves have their frequency modulated & AM waves have their amplitude modulated (Wikipedia)Middle C has a frequency around 261.6 hertz, when using the A440 pitch standard (Wikipedia)What is pitch? Our definition of different notes has changed over the centuries! (Encyclopaedia Britannica)What is tone? (Encyclopaedia Britannica)Online tone generator...take that tone with me! (Online Tone Generator)Forced vibration & resonance (the Physics Classroom)"The brown note is a hypothetical infrasonic frequency that would cause humans to lose control of their bowels due to resonance" (Wikipedia)Fundamental frequency & harmonics (the Physics Classroom)Strings, standing waves & harmonics (School of Physics, UNSW)How does a guitar work? (School of Physics, UNSW)What guitar strings are really doing up close (Science Alert)How does a piano work? (Explain That Stuff!)Clip: This is nuts! Making a real sound wave out of falling water & a speaker (Brusspup, YouTube)Clip: Cool experiment immersing a speaker in water & making sound waves you can see (Showtime SPL, YouTube)Clip: Inside a piano (VeryUsefulTools, YouTube)A band where the piano player puts his arm inside the piano (Dawn of Midi)Podcast about Dawn of Midi (Radiolab)'Circle of fifths' podcast that Johnny mentioned (Surprisingly Awesome)Infographic of guitar anatomy & how they work (Best Infographics)What is a fret? (Wikipedia)What is an octave? "The basic miracle of music" (Wikipedia)What is an octave? (Encyclopaedia Britannica)Western music scales (Wikipedia)Non-Western scales (Wikipedia)There are 12 notes in our music system, the main ones plus the sharps & flats (Zebra Keys)Pic: Guitar fret dots (My Guitar)Tacoma Narrows bridge that collapsed, believed to be caused by 'forced resonance' (Wikipedia) Clip: Breaking a wine glass with sound (MIT Video)What is audio feedback? (Wikipedia)Fact or fiction? An opera singer's piercing voice can shatter glass (Scientific American)Clip: A MythBuster's glass shattering montage (Jaime Vendera, YouTube)Hearing & hair cells...apparently they don't grow back naturally so be careful kids (University of Wisconsin)Compound regenerates auditory hair cells, offering a possible treatment for deafness (Scientific American)Bionic Ear Lane, Melbourne (street-directory.com.au)Interview: Professor Graeme Clark, developer of the cochlear implant (Australian Academy of Science)How does a cochlear implant work? (Cochlear)What is brain plasticity & why is it so important? (The Conversation)Training the brain to hear better (TIME)How does a microphone work? Simple conversion of sound energy (Explain That Stuff!)How do ears work? (Australian Hearing)The ATR2100 USB - Strange Attractor's microphone of choice (audio-technica)Neil from The Young Ones (Wikipedia)Bang & Olufsen are indeed Danish (Wikipedia)You can now get speakers that are panes of glass (Clear View)The rude gesture Johnny was making to explain how speakers & mics work (Shutterstock)Taylor SwiftSound recording onto analog cylinders & records (Wikipedia)How record players & phonographs work (Explain That Stuff!)The golden record on Voyager (JPL, NASA)What are MP3 files? (Explain That Stuff!)Gif: Master record cutting (vinyl gif)Ye olde wax cyclinders for phonographs (The Cylinder Archive)Phonograph cylinders (Wikipedia)Clip: How vinyl records are made (Part 1) (forwardbound, YouTube)Clip: How vinyl records are made (Part 2) (forwardbound, YouTube)Melbourne Recital CentreElbow (Wikipedia)The Corner Hotel, MelbourneDavid Gilmour (Wikipedia)Jack White (Wikipedia)This is just cool: What do tree rings sound like when played like a record? (IFL)Corrections
Higher pitches are detected by ear hair cells with shorter hair bundles, lower pitches by hair cells with taller cell bundles...plus a random aside, apparently chickens can regrow damaged ear hairs! (Science Daily)Sonar is actually sound waves, not electromagnetic (Wikipedia)Cheeky review? (If we may be so bold)
It'd be amazing if you gave us a short review...it'll make us easier to find in iTunes: Click here for instructions. You're the best! We owe you a free hug and/or a glass of wine from our cellar
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