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Related Flashcards
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Cards In This Set
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What is an analog system?
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An analog system is when one system mimics another continuously so that you can use it to represent the original.
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What is a binary system?
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A binary system is one that has only two parts or states.
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What is a transistor?
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Transistors are a collection of millions of tiny electrical switches that are made of solid crystals and do not have any moving parts.
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What is the sampling rate?
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The sampling rate is the frequency of measurement.
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What does an analog to digital (AD) convertor do?
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Analog to digital convertors sample the analog voltage many times each seconds and assigns a binary number to the voltage at each point in time.
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What is the sampling rate used to record music onto CDs?
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The sampling rate used for CDs is 44,100 Hz.
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What is attenuation?
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Attenuation is when a signal travels through air or glass and loses some of its energy and becomes weaker.
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What does a repeater do?
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A repeater can generate new signals that have the appropriate voltages that match the original digital signal.
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What does a photodetector do?
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A photodector converts the flashes of light back into two voltages that can be used by a computer.
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What are electromagnetic waves (EM)?
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Electromagnetic waves are a combination of electric and magnetic fields that are capable of propagating themselves through space without the need for wires or cables.
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What is amplitude?
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Amplitude is the strength of a wave.
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What is in-band on-channel (IBOC)?
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IBOC is when a digital radio receiver can separate the digital component and play it instead of the analog component and is backwardly compatible.
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What are radio stations that transmit digital signals called?
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Radio stations that transmit digital signals are referred to as digital radio or high-definition (HD) radio.
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What is amplitude modulation (AM)?
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Amplitude modulation is the varying of the strength of a signal.
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What is true color?
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True color is the level of recording on a computer image that humans can perceive. Combination of 256 shades of each of three colos is more than 16 million.
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