Links to Wave and Sound Applets and Information

Basic wave phenomena

• Superposition, Doppler effect, Ripple tank and FFT simulations by Forinash using Java Applets from the group at Davidson College: http://Physics.ius.edu/~kyle/physlets/waves/waves.html
• Dan Russell's Acoustics page has many applets and demos including basic wave phenomena, sound waves from different sources, complex waves, room acoustics, harmonic oscillators, and vibrational modes: http://www.gmi.edu/~drussell/Demos.html
• This link covers the Doppler effect, Beats, Standing Waves and Resonance (be sure to look at the QuickTime video of the F-14 shock wave):
  http://www.hazelwood.k12.mo.us/~grichert/sciweb/sound.htm
• Standing waves in a tube simulation (Robert Heart at Southern Menthodist University): http://www.physics.smu.edu/~olness/www/03fall1320/applet/pipe-waves.html
• Physics in Context web site, chapter 8 on waves (multiple links): http://www.learningincontext.com/Chapt08.htm
• A VERY extensive site of applets, animations, demos, links, etc. including: Beats, Doppler effect, Fourier Series, interference and harmonics: http://users.telenet.be/educypedia/electronics/javaaudio.htm
  

The human ear

• Structure and function of the ear (Tim Jacob at Cardiff University, UK): http://www.cf.ac.uk/biosi/staff/jacob/teaching/sensory/ear.html
• Structure of the ear with more detail (Atlantic Coast Ear Specialists): http://www.earaces.com/anatomy.htm#cochlear%20partition 
• Structure of the ear and a discussion of types and causes of deafness (Louisiana State University): http://www.lsu.edu/deafness/auditory.htm
• A few more details of ear structure with a short quiz: http://mimp.mems.cmu.edu/~ordofmag/ear.htm
  
• Noise pollution (student created web page).
  

Synthesizers, Fourier Series

• Synthesizer simulation with sound output: http://www.phy.ntnu.edu.tw/java/sound/sound.html Same applet available at: http://webphysics.ph.msstate.edu/jc/library/15-4b/index.html
  
• This is the same simulation but with the capability to input the frequencies as numbers: http://www.phy.ntnu.edu.tw/java/sound/sound.html
• This applet will allow you to construct a wave form, see the Fourier components in a decomposition and compare the original with the re-composed wave form constructed from the Fourier components. http://pirate.shu.edu/~wachsmut/Java/FFT/
• This applet shows and plays audio of a sine, square, triangle and sawtooth wave and their Fourier components. http://ptolemy.eecs.berkeley.edu/eecs20/week8/examples.html
• This applet shows and plays audio of a waveform created by adding up to six sine and cosine components. http://www.nst.ing.tu-bs.de/schaukasten/fourier/en_idx.html
• Theoretical discussion of Fourier Series: http://www.np.edu.sg/mscIntMaths/Fourier/6_linesp.htm with simulation link at bottom of page to a synthesizer applet: http://falstad.com/fourier/
• A discussion of how additive synthesis works (a few problems with the simulations but useful information): http://eamusic.dartmouth.edu/~book/MATCpages/chap.4/4.2.add_synth.html 
• Text discussion on digitalizing multimedia (good discussion of the Nyquist sampling theorem): http://www.cs.cf.ac.uk/Dave/Multimedia/node141.html
• Samples of filtering and oscillators in commercial musical synthesizers: http://www.sequencer.de/synthesizer-basics.html
• Text info on frequency modulation synthesis: http://en.wikipedia.org/wiki/Frequency_modulation_synthesis
• Commercial site with articles about synthesizers: http://www.audiomidi.com/aboutus/classroom.cfm
• A down loadable java real time audio synthesis package (author Kees van den Doel) with some demos: http://www.cs.ubc.ca/spider/kvdoel/jass/jass.html
• Sound cancellation game applet: http://www.measure.demon.co.uk/Acoustics_Software/anc.html
• FAQ on active noise cancellation.

Spectrograms (time vs frequency analysis)

• C. Lang and K. Forinash; 'Time-Frequency Analysis with the Continuous Wavelet Transformation', American Journal of Physics, vol. 66, no. 9 (1998) p794. Figures for this paper
• What a spectrogram is: http://cslu.cse.ogi.edu/tutordemos/SpectrogramReading/spectrogram_reading.html
  
• An excellent (and free) sound analysis program. Originally made to analyze bird songs but works with any .wav file to generate a spectrogram: http://soundruler.sourceforge.net
• An example of a spectrogram with corresponding sound (birds): http://birds.cornell.edu/brp/spgdef.html
  
• Spectrogram applet: http://www.ee.washington.edu/research/isdl/jdroppo/spectrogram/
  
• Sound to graph to sound spectrogram applet. This doesn't work quite like I think it was suppose to but it is interesting because you can add to a spectrogram and hear the resulting change in the sound. http://faculty.washington.edu/dillon/PhonResources/javoice/vowjavoice2.html
  
• Uses of spectrograms:
• An extensive page on the analysis of spoken English: http://faculty.washington.edu/dillon/PhonResources/PhonResources.html#Speech 
• In seismography: http://www.avo.alaska.edu/avo4/atlas/volc/shish/1999unrest/shish_specs.html
  
• Chriping sound at the Mayan pyramid in Mexico. More.
• A kind of (non standard) spectrogram in music: http://nastechservices.com/Spectrograms.html
• The Mars microphone project: http://sprg.ssl.berkeley.edu/marsmic/sound/spec.html
• Whale spectrograms: http://www.unipv.it/webcib/sperm.html
• NOAA Acoustic monitoring project (volcanic seismicity, marine mammals, man made sounds): http://www.pmel.noaa.gov/vents/acoustics/specs_all.html
  

Electronics

• Microphones:
• http://www.transom.org/tools/recording_interviewing/200106.microphones.jtowne.html 
• http://members.aol.com/mihartkopf/  

• Speakers:
• http://electronics.howstuffworks.com/speaker.htm 
• http://www.harmony-central.com/Other/mic-faq.txt
  

• CD players:
• http://entertainment.howstuffworks.com/cd1.htm 
• http://www.tc.umn.edu/~erick205/Papers/paper.html
  

Musical instruments:

• The official Exploratorium sound/music page, including many interactive demonstrations:  http://www.exploratorium.edu/music/
• General information about the violin:  http://whyfiles.org/shorties/087fiddle_physics/
• Great article in Physicsweb about violins: http://physicsworld.com/cws/article/print/696
• University of New South Wales music acoustics main page: http://www.phys.unsw.edu.au/music/
• Chinese singing fountain bowls.

Miscellaneous

• Sonoluminescence (changing sound into light).