what materials are used for making a sound proof generator which was normal generator?
958598
Here are a few ideas on reducing generator noise, taken from my generator web site.\nhttp://members.rennlist.org/warren/generator.html\n\nChoose an operating location as far away as possible. Note that a larger gauge wire is needed to reduce voltage drop as line length increases. Reducing line loss is required to minimize power loss and to ensure maximum power is available to the house. Lights will flicker less when heavy loads are attached. \n\nChange the exhaust system. Noise from the portable generator systems comes primarily from two sources, the engine block and the exhaust system. With an air cooled engine there is little you can do about block noise. Some engines can have a larger muffler attached or make other changes to the exhaust system. Merely mounting exhaust pipe vertically will noticeably reduce noise. \n\nBuild a noise shielding enclosure. This could be as simple as a piece of plywood to reflect sound away from the house to a separate shed to hold the generator. Design your enclosure with safety in mind. Provide adequate air circulation and ventilation to prevent heat buildup and to remove carbon monoxide. \n\nIf the noise bothers your neighbors, invite them over for coffee or offer to run line to their home to power the freezer or a few lights. Talk to them before starting the engine, ask they let you know if the noise is bothersome before they phone the police or harbor any resentment. A little diplomacy can go a long way. \n\nLast resort, shut off the engine or buy a quiet generator.
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
152224
A good example of electricity to sound converter is your system woofer. It consists of two magnetic parts fixed strong permanent magnet, movable electromagnet. The pulsating electric current is passed to electromagnet which produces magnetic field. There exists a force of attraction when current rises and repulsion when current decreases making the electromagnet to move. The diaphragm attached to the electromagnet moves along with it making vibrations in the air surrounding it producing sound.
897223
possible that you may be talking about integrated circuits for electronic organs (musical instruments)? \n\nOtherwise are you interested in organic polymers and semi-conductors use in integrated circuit? \n\nTry some of the above on a search engine.
748213
Try Edmund Scientific on the web..but if you want to make your own try the link provided.\n\nGood luck!
214548
You should use DOD Specification 5200.28-M, for the degaussing and destruction of high-density media.\n\nhttp://all.net/books/standards/remnants/standards.html
2128
Its called a sound block.
1169135
EQUIPMENT NEEDED\n\nHARDWARE\n\nCassette Deck \nComputer With Sufficient Harddisk (to store the .wav files) and RAM (to edit and process the files) \nCD Writer \nSoundcard \nInterconnect cables for connection between the cassette deck and the soundcard \nSOFTWARE\n\nAudio Recording Software \nNoise Reduction Software or Plug-in (Optional) \nCD Authoring Software \n\nThat is the beginning of this website: http://web.singnet.com.sg/~lion4/articles/diy/cassette.html
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Here are some sources\n\nwww.elephant-dental.de/downloads/ BR_E_Biocompatible%20Alloys.pdf\n\nwww.devicelink.com/emdm/archive/06/05/019.html\n\nwww.dentricks.se/prod01.html
554109
use ultrasonic machine... the sound waves should shatter it to smithereens
99544
Advanced Signal Processing ... I think it's a "type" of card rather than a manufacturer. Most likely a Sound Blaster made by Creative.
237217
A Van Der Graaf generator uses a belt to strip electrons from the base of the system and deposit them in the head(or dome) of the system. This creates a potential difference between the base and the head. The belt is made of an insulating material such as silk or leather. If you can find a few simple materials you can probably build one.
863589
Wave shaping circuits are used in function generators.  You might get some help here http://en.wikipedia.org/wiki/Function_generator
624605
You can start your search here  http://www.noisecontrol.nl/en/persluchtgeluiddempers_en.html
532156
ur ques is incomplete. in a microphone it gets converted to electrical energy
436127
depends on what you want to do with the sound, but generally they use geometry to create sound friendly environments. (feedback reduction,  good resonance reverb, noise reduction, and others)
160875
You use a fake generator