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Sound system

Nov 17, 2014

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  • 1. Sound System03/21/2012 Manish Yakami

2. Sound system refers to both I/O devicesSystem like Headphones, Microphones, SpeakersSound System is controlled through Sound CardsComputer Sound Systems Depend On Quality Sound Cards03/21/2012Manish Yakami 3. A sound card (also known as an audio card) is an internal Computer Expansion Card that facilitates the input and output of Audio Signals to and from a computer under control of computer programsSound cards usually feature a Digital to Analog Converter (DAC), which converts recorded or generated digital data into an analog format.03/21/2012 Manish Yakami 4. 03/21/2012 Manish Yakami 5. MicrophonesHeadphonesSpeakers03/21/2012 Manish Yakami 6. is an acoustic-to-electric transducer or sensor that converts sound into an electrical signal.Microphones are used in many applications in computers for recording voice, speech recognition,.03/21/2012 Manish Yakami 7. Condenser microphoneDynamic microphoneRibbon microphoneCarbon microphonePiezoelectric microphoneFiber optic microphoneLaser microphoneLiquid microphoneMEMS microphone03/21/2012Manish Yakami 8. 03/21/2012 Manish Yakami 9. is also an electroacoustic transducer that produces sound in response to an electrical audio signal input.Speakers come in all shapes and sizes, enabling you to listen to music and enjoy a film on your computer.03/21/2012 Manish Yakami 10. Inside a speaker:1. Cone2. Electromagnet (coil)3. Permanent magnet 03/21/2012 Manish Yakami 11. contain an electromagnet: a metal coil which creates a magnetic field when an electric current flows through it.coil behaves much like a normal (permanent) magnet, with one particularly handy property: reversing the direction of the current in the coil flips the poles of the magnet.03/21/2012 Manish Yakami 12. an electromagnet is placed in front of a permanent magnet. The permanent magnet is fixed firmly into position whereas the electromagnet is mobile.As pulses of electricity pass through the coil of the electromagnet, the direction of its magnetic field is rapidly changed. This means that it is in turn attracted to and repelled from the permanent magnet, vibrating back and forth03/21/2012 Manish Yakami 13. The electromagnet is attached to a cone made of a flexible material such as paper or plastic which amplifies these vibrations, pumping sound waves into the surrounding air and towards your ears.The frequency of the vibrations governs the pitch of the sound produced, and their amplitude affects the volume turn your stereo up high enough and you might even be able to see the diaphragm covering the cone move.03/21/2012 Manish Yakami 14. To reproduce all the different frequencies of sound in a piece of music faithfully, top quality speakers typically use different sized cones dedicated to high, medium and low frequencies.03/21/2012 Manish Yakami 15. German, Ernst Siemens patented the first loudspeaker on Dec. 14, 1877.Sir Oliver Lodge received the second patent for a loudspeaker on April 27, 1898. This was all before music was electrified.03/21/2012 Manish Yakami 16. In 1924, two General Electric researchers, Chester W. Rice and Edward Washburn Kellogg patented the modern, moving coil, direct radiator, loudspeaker, which become the prominent design for all loudspeakers.In 1958, the first box-enclosed loudspeakers were invented by the Cabesse, a French company.03/21/2012 Manish Yakami 17. 03/21/2012 Manish Yakami 18. a pair of small loudspeakers which are designed to be held in place close to a users ears.Headphones have wires which allow them to be connected to a signal source such as an audio amplifier, radio, CD player, or portable media player.03/21/2012 Manish Yakami 19. are also known as stereo phones .The in-ear versions are known as earphones or ear budsIn the telecommunication, the term headset is used to describe a combination of headphone and microphone.03/21/2012Manish Yakami 20. CD or DVD players.home theater.personal computers.portable devices (e.g. digital audio Player/mp3 Player, mobile phone, etc.)03/21/2012 Manish Yakami 21. 03/21/2012 Manish Yakami 22. 03/21/2012 Manish Yakami