digital-to-analog conversion


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Related to digital-to-analog conversion: AD converter, A/D conversion

digital-to-analog or D/A conversion,

the process of changing discrete digital data into a continuously varying signal in relation to a standard or reference. There are two types of converters: electromechanical—also called shaft- or position-to-digital—and electronic. An example of electromechanical conversion is a positioning mechanism, such as a strip-chart recorder. The most common use of an electronic converter is to present the output of a digital computercomputer,
device capable of performing a series of arithmetic or logical operations. A computer is distinguished from a calculating machine, such as an electronic calculator, by being able to store a computer program (so that it can repeat its operations and make logical
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 as a graphic display (see computer graphicscomputer graphics,
the transfer of pictorial data into and out of a computer. Using analog-to-digital conversion techniques, a variety of devices—such as curve tracers, digitizers, and light pens—connected to graphic computer terminals, computer-aided design
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) or as audio output, as in computer-generated music. A modemmodem
[modulator/demodulator], an external device or internal electronic circuitry used to transmit and receive digital data over a communications line normally used for analog signals.
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, or data set, is a device that converts the digital signals produced by computers and terminals into analog signals that telephone circuits are designed to carry and then back to digital signals at the other end of the communication link. See also analog-to-digital conversionanalog-to-digital or A/D conversion,
the process of changing continuously varying data, such as voltage, current, or shaft rotation, into discrete digital quantities that represent the magnitude of the data compared to
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.
References in periodicals archive ?
Because the conversion takes place in the player, the signal remains free of digital-to-analog conversion artifacts.
The problem is compounded by the fact that digital works can easily lose their identifying information during the distribution process, digital-to-analog conversion, or routine file format changes.
Since the conversion occurs in the player, the signal is free of excessive digital-to-analog conversion artifacts.
The heart of its digital-to-analog conversion is powered by four Burr-Brown 24-bit/192 kHz DACs with 8X oversampling.
Goal's capabilities, product designs and IP focus on analog signal conditioning, analog-to-digital and digital-to-analog conversion, programmable microcontrollers, signal processing blocks, and interfaces for control or networking.
Fairchild's FMS6406, a 5th order video filter, eliminates unwanted digital artifacts by significantly reducing the clock and image frequencies after the digital-to-analog conversion process occurs on an MPEG chip.
Because digital watermarks survive digital-to-analog conversion, they can address one of the most common piracy threats identified by the MPAA -- the illegal recording of movies from theater screens, by employees or movie-goers, using hand-held video cameras -- and help provide forensic evidence for future investigations or prosecution.

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