Podcast
Questions and Answers
Transmitter, the channel, and a ______ are three major subsystems in information transmission systems.
Transmitter, the channel, and a ______ are three major subsystems in information transmission systems.
receiver
Messages may be categorized as ______ or digital.
Messages may be categorized as ______ or digital.
analog
The message produced by a source must be converted by a ______ to a form suitable for communication systems.
The message produced by a source must be converted by a ______ to a form suitable for communication systems.
transducer
In electrical communications, speech waves are converted by a ______ to voltage variations.
In electrical communications, speech waves are converted by a ______ to voltage variations.
The signal can be interpreted as the variation of a quantity, often a voltage or current, with ______.
The signal can be interpreted as the variation of a quantity, often a voltage or current, with ______.
Common examples of input transducers include ______, camera, and keyboard.
Common examples of input transducers include ______, camera, and keyboard.
The purpose of the transmitter is to couple the message to the ______.
The purpose of the transmitter is to couple the message to the ______.
Modulation is the systematic variation of some attribute of the ______, such as amplitude, phase, or frequency.
Modulation is the systematic variation of some attribute of the ______, such as amplitude, phase, or frequency.
There are several reasons for using a carrier and ______ it.
There are several reasons for using a carrier and ______ it.
In radio communication, modulation schemes are used to encode information onto the ______.
In radio communication, modulation schemes are used to encode information onto the ______.
