MTEC-111 Terms exam with correct answers.

MTEC-111 Terms exam with correct |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




answers

Active Device - correct answer✔✔Any electronic signal processing device that requires AC or
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DC current to power its operation, and that generally includes an amplifying stage after its
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primary processing circuit, allowing the output level to be matched to the input level. (WW)
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Additive Synthesis - correct answer✔✔(A) Randomly chosen amounts and phases of a
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fundamental and its |||\\\ |||\\\




second through sixth harmonics; (B) The complex wave created by combining the above
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waveforms. (WW) |||\\\




ADSR - correct answer✔✔Attack, Decay, Sustain, Release. The four sections of every sound's
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envelope. (WW) |||\\\




ALU - correct answer✔✔Arithmetic and Logic Unit. The portion of a CPU that actually
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performs arithmetic and other computational procedures. (WW) |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




Analog-To-Digital Converter (ADC) - correct answer✔✔In digital recording, the group of circuits |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




that sample the analog waveform, measure its instantaneous voltage, and convert this decimal
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value to its binary equivalent, in preparation for storage on tape (or on floppy disk, in random
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access memory, etc.). (WW) |||\\\ |||\\\ |||\\\




Analog Recording - correct answer✔✔Any method of recording in which the recorded
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waveform is a continuous representation of the original signal. Example: conventional magnetic |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




recording, direct to disc. (WW)
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,Applications - correct answer✔✔Any complex software the user buys to accomplish a |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




repetitive job that is unrelated to the basic nature of his own goals. A word-processing program |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




is a good example, since it is mathematically complex, but its internal operations are
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functionally irrelevant to the user who is writing letters or a book. (WW) |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




ASCII - correct answer✔✔American Standard Code For Information Exchange. The most
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common code used for transmitting text data from computer to computer, or to peripherals. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




The code employs 8-bit binary words, by which each letter of the English language, each Arabic
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numeral, and each commonly used symbol is uniquely designated. (WW)
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Attenuation - correct answer✔✔A fixed or variable reduction in signal strength, which may in |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




turn reduce the volume of sound heard. (WW)
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Attenuation Pad (or Pad) - correct answer✔✔A resistive network or other circuit generally |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




passive, that is inserted in an audio line to reduce the signal level. (WW) |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




Balanced Line - correct answer✔✔An electrical cable with two conductors and a separate |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




shield. When a signal is present, the conductors have the same potential with respect to
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ground, but opposite polarities. (WW) |||\\\ |||\\\ |||\\\ |||\\\




Bandwidth - correct answer✔✔1. Strictly speaking, the arithmetic difference between the |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




highest and lowest frequencies that are (a) passed by an electronic device, or (b) present in a
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specific acoustic sound or audio signal. Example: The bandwidth of a telephone is
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approximately 2.2 kHz-i.e., 2,400 Hz minus 200 Hz. The endpoints of a circuit's or system's |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




bandwidth are those frequencies at which its response or Output is attenuated by 3 dB. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




2. Colloquially, the low and high frequencies of any specific frequency band. One might say,
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"The bandwidth of an electric guitar is 80 Hz to 8 kHz." (WW)
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Bit - correct answer✔✔The smallest unit of information that can be stored, transmitted, or
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processed by any digital circuit - e.g., a computer. Each bit is a "1" or "0" and corresponds to a |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




single yes/no, on/off, or other similar decision. Abbreviated from BInary digiT. (WW)
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,BPM Beats Per Minute - correct answer✔✔A measurement used by disc jockeys to determine
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whether two rock or dance records will blend or mix together smoothly. BPM ratings are often
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printed by record companies on the labels of promotional copies sent to radio stations, record
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pools, and individual disc jockeys. (WW)
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Buffer Memory - correct answer✔✔In digital circuits, an intermediate storage device (or
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memory) that can receive and dispense data at different rates, or merely hold data until the
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following device is prepared to accept it. Often used to adapt the output rate of one device -
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e.g., a computer-to the input rate of another e.g., a printer. One use of buffer memories in
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digital recording occurs in error correction circuitry, where such a device holds data read from
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tape until it can be checked for accuracy, at which point it is decoded and reproduced. Buffers
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are also used to resequence data in de-interleaving, and to reduce wow and flutter in digital
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playback. (WW) |||\\\




Byte - correct answer✔✔A sequence of 8 bits of data, established as a standard parcel of
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information in computing because it can designate any of 63 possible items (2 raised to the 8th |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




power, minus 1). This number is sufficient to uniquely specify any letter in the English
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alphabet, any single Arabic numeral, and a group of commonly used symbols. For that reason,
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the byte is used as the basis of the ASCII code. (WW)
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CD-ROM - correct answer✔✔Compact Disk Read-Only Memory. A data storage format for
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compact discs that enables digital sound and or visual materials to be encoded on the disc. If
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visuals will accompany audio, the format allows enough memory for about one still image for
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each 30 seconds of audio. As a publishing medium, CD-ROM offers book publishers vast storage
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capacity. The Grolier Encyclopedia was the first book available in this format, the entire printed
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edition fitting on a single CD. Random access availability of data and the enormous indexing
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capacity of CDs make this a great medium for printed matter. The total storage capacity of a
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single CD-ROM is about 650 megabytes. (WW)
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Chip - correct answer✔✔The miniaturized signal-processing heart of an integrated circuit, or
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any of the thumbnail sized data storage or data-processing circuits in computers, digitally
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controlled devices, etc. (WW) |||\\\ |||\\\ |||\\\

, Chorus - correct answer✔✔A type of signal processing that slightly delays and, by rhythmic
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flanging, doubles the apparent number of players or singers heard in the signal. Chorusing also|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




adds a vibrato to the resulting signal. (WW)
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CPU - correct answer✔✔Central Processing Unit. The integrated circuit chip in a computer that
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actually performs most operations on data. (See ALU) (WW)
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CRT - correct answer✔✔Cathode Ray Tube. Either black and white or color. Although there are
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all shapes and sizes of CRT's, the most familiar is the picture tube of every television. (WW)
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Compression - correct answer✔✔The squeezing together of air molecules during the first half |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




of each complete cycle of a sound wave. It corresponds to the portion of the wave that
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appears above the axis when graphed. Opposite of rarefaction. (WW) |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




Compression Ratio - correct answer✔✔The numerical ratio of the decibel increase in input |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




level of a compressor (above the threshold) that produces a one decibel increase in output
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level. Example: If the increase in input level is 5 dB for every 1 dB increase in output, the
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compression ratio is 5:1. (WW) |||\\\ |||\\\ |||\\\ |||\\\




Compressor - correct answer✔✔A signal-processing device consisting of an amplifier whose |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




gain decreases automatically as the input signal level increases above a specified threshold.
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Some models use their own output signal to control gain reduction. The result is a decrease in
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the dynamic range of the signal from input to output, primarily by reduction of the level of
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transients or peaks in the signal. This can prevent overload on steep transients and, when the |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




gain prior to compression is greater than unity, provide a boost for very low level signals. (WW)
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Condenser (or Capacitor) Microphone - correct answer✔✔A microphone in which the |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




vibrating diaphragm is electrically charged and acts as one plate of a capacitor. The movement |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




of the diaphragm or membrane with respect to a rigid plate (charged with the opposite
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polarity) causes a tiny change in the potential between them. This is amplified by an internal
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