is there any device to convert sound enenrgy into elecrical energy?
539753
All microphones capture sound waves with a thin, flexible diaphragm (or ribbon in the case of ribbon microphones). The vibrations of this element are then converted by various methods into an electrical signal that is an analog of the original sound. Most microphones in use today use electromagnetic generation (dynamic microphones), capacitance change (condenser microphones) or piezoelectric generation to produce the signal from mechanical vibration.\n\nRead more on:\n\nhttp://en.wikipedia.org/wiki/Microphone#Principle_of_operation\n\nand\n\nhttp://www.m2m.ecs.soton.ac.uk/Default.asp?id=35
1126266
try creative media source...u can convert mp3 to wav n vice versa...its good it can do lotta conversion stuff
44841
A good place to start will be to look at the following websites \n\nThermal Energy and States of Matter\nhttp://www.pschweigerphysics.com/thermenergy.html\n\nThermal Energy\nhttp://sol.sci.uop.edu/~jfalward/physics17/chapter6/chapter6.html\n\nThermodynamics and Thermal Physics guides\nhttp://physics.about.com/cs/thermodynamics/\n\nIf your doing a project you might look into "Ocean Thermal energy conservation" as a topic.\n\nOcean Thermal energy conservation is used to generate electricity using the temperature difference of seawater at different depths
987641
One of the best ideas is a device that uses the motion of the ocean waves to produce energy.  Also, it would be more efficient to simply burn hydrogen as a fuel source as opposed to trying extract the energy created when it bonds with oxygen to create water.  Another is simply burning garbage, I believe a major metropolitan city in Minnesota created a site to do this in the middle of downtown to show that it could be done with minimal side effects on the people living/working there.
62361
Try it. CAUTION - KEEP LIQUIDS AWAY FROM ELECTRICAL CURRENT.\n\nSet up a loudspeaker next to a glass of water (a wine glass is good for this)\n\nWhat do you think will happen when you alter the sound from the speaker?\n\nInvestigate and observe.\nTry a thicker liquid such as milk.
700784
Try Audacity\n\nhttp://audacity.sourceforge.net/
811761
Not sure if this is what your looking for:\n\nhttp://www.jkaudio.com/daptor1.htm
646559
Try Sound Forge.\nwww.sonymediasoftware.com/products/soundforgefamily.asp
116486
your sound card might already have one. \n\nStart > Programs > accessories > entertainment > sound recorder\n\nor like if you have a Sound Blaster card ... it'd be with the Creative Sound Blaster programs
941286
if it is only in your room there must be a source\nto find it all you have to do is plug one ear - place a tube on the other ( thick cardboard like wrapping paper comes on ) and slowly move around the room - the direction will be obvious - start with the window it could be a nearby power transformer ( if the source is in the wall check the other side before tearing into it - sound is not directional if you don't hear it on both sides it is probably near the wall not in it - like the floor or ceiling at the wall joint )
928606
A portable cell-phone charger. U may use solar energy.
231179
Never going to happen for the sort of power you seem to be thinking about. \n\nYou need to research the efficiency of loudspeakers (and by default dynamic microphones). Not a good way of converting energy. \n\nConsider an airport... if was viable they would have banks and banks of mics under the flight path... free noise therefore free energy? Nope - because its just not efficent enough as a concept / system. \n\nConsider also the inertia required to start an memberane moving - thats most of of the sonic energy absorbed before the coil has moved to induct a tinnnnnnny current. \n\nNice thought though - do the research - there might be some milage in a a few really large diagphram dynamic mics catching some sub sonic energy (below about 40Hz). \nAs a tip the real energy is in the low freq. Ultra sonic (+20kHz) is good for close quarters 'vibration' type energy (think microwave).\n\n\nEDIT: to person below me, did you actually read the question? Ultrasound and Sonar are ways of using sound to achieve things, but not to change to electricity as per the original question: 'for producing electricity in order to do work'\n\nThe work Sonar systems and ultrasound systems do is powered by mains and battery power, and the sound is both produced and recaptured internally...
336816
Yes. Even though you cant hear it, it is still turned on so therefore using electricity
647307
Try the sonometer or the resonance experiment
213560
no, but there is equipment out there that can transform them into sounds that we can hear
863520
http://www.cooltoolawards.com/software/multimedia/audiogenerator.htm
512908
Yes this can be obtained in real life\n\nUse the output jack to your speakers and shuve it up your ass then yank it out again. Hope this helps