AUDIO / VIDEO |
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Sound recording and reproduction is the electrical or mechanical re-creation and/or amplification of sound, often as music. This involves the use of Audio components such as microphones, recording devices and loudspeakers. From early beginnings with the invention of the Phonograph using purely mechanical techniques, the field has advanced with the invention of electrical recording, the mass production of the 78, the Magnetic wire recorder followed by the Tape recorder,the Microgroove recording, and the LP record. The invention of the Compact cassette in the 1960's, followed by the Walkman, gave a major boost to the mass distribution of music recordings, and the invention of Digital recording and the Compact disc in 1983 brought massive improvements in ruggedness and quality. The most recent developments have been in Digital audio players like the Apple iPod.
Video is the technology of capturing, recording, processing, transmitting, and reconstructing moving pictures, typically using celluloid film, electronic signals, or digital media, primarily for viewing on television or computer monitors.
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DIGITAL TELEVISION |
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DTV can be used to carry more channels in the same amount of bandwidth than analog TV (6 MHz or 7 MHz in Europe) and to receive high-definition programming. The digital signal eliminates common analog broadcasting artifacts such as "ghosting", "snow", and static noises in audio. However, when the signal is transmitted at a too low data rate DTV replaces these artifacts with new MPEG compression artifacts, such as "blocking", and may fail to work entirely in situations where analog television would have produced an impaired but watchable picture. Depending on the sophistication and level of the error correction defined by the technical standard that the broadcaster complies with, DTV may either work perfectly or not work at all.
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ENGINEERING - ELECTRICAL |
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Electrical engineering (sometimes referred to as electrical and electronics engineering) is a professional engineering discipline that deals with the study and application of electricity, electronics and electromagnetism. The field first became an identifiable occupation in the late nineteenth century with the commercialization of the electric telegraph and electrical power supply. The field now covers a range of sub-disciplines including those that deal with power, control systems, electronics and telecommunications.
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VIDEO / AUDIO |
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Find VIDEO / AUDIO experts and consultants for VIDEO / AUDIO litigation support. Available to be VIDEO / AUDIO expert witnesses and provide VIDEO / AUDIO forensic consulting in VIDEO / AUDIO litigation, in addition prepare VIDEO / AUDIO expert witness reports for use in deposition and/or in-court trial testimony.
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