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Sound and radio waves are different phenomena. Sound consists of pressure variations in matter, such as air or water. Sound will not travel through a vacuum. Radio waves, like visible light, infrared, ultraviolet, X-rays and gamma rays, are electromagnetic waves that do travel through a vacuum. When you turn on a radio you hear sounds because the transmitter at the radio station has converted the sound waves into electromagnetic waves, which are then encoded onto an electromagnetic wave in the radio frequency range (generally in the range of 500-1600 kHz for AM stations, or 86-107 MHz for FM stations). Radio electromagnetic waves are used because they can travel very large distances through the atmosphere without being greatly attenuated due to scattering or absorption. Your radio receives the radio waves, decodes this information, and uses a speaker to change it back into a sound wave. An animated illustration of this process is given below (mouse-over the images for animations).
A sound wave is produced with a frequency of 5 Hz - 20 kHz.
The sound wave is equivalent to a pressure wave traveling through the air.
A microphone converts the sound wave into an electrical signal.
The electrical wave traveling through the microphone wire is analogous to the original sound wave.
The electrical wave is used to encode or modulate a high-frequency "carrier" radio wave. The carrier wave itself does not include any of the sound information until it has been modulated.
The carrier wave can either be amplitude modulated (AM, top) by the electrical signal, or frequency modulated (FM, bottom).
-Forones
The signal is transmitted by a radio broadcast tower.
Your radio contains an antenna to detect the transmitted signal, a tuner to pick out the desired frequency, a demodulator to extract the original sound wave from the transmitted signal, and an amplifier which sends the signal to the speakers. The speakers convert the electrical signal into physical vibrations (sound).
Jeffry Ortiz
Wiki User
∙ 12y agoIn LANDLINES DEPENDS HOW IT WORKS LIKE IF IT IS MOBILE CELLPNONE OR LANDLINE HOMEPHONES IT ALL WORKS WITH SATELITE CONNECTIVITY
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What is the function of communication devices?
it enables you to communicate when you can't talk
What must be identical on all devices in a WLAN for successful wireless communication between the devices?
What must be identical on all devices in a WLAN for successful wireless communication between the devices?
What are descrption and types of communication devices?
As there thousands of types of communication devices and hundreds of thousands of barand name of those devices you have asked a very hard question
Which Peripheral devices use serial communication?
Most modern peripherals. USB devices, Firewire devices , SATA hard drives, PCI express cards and Ethernet are all examples of devices using serial communication.
What are some examples of communication devices?
modem
What is communication net work?
A communication network is a collection of communication devices. They may be connected wirelessly or by wire. Examples include - A Ham Radio Net, A military radio net, or a family radio net, Cellular Telephones, Telephones, etc.
What is a collection of computer and devices connected together via communication media and devices?
Network
What are communication facilities?
Communication facilities are the place, buildings, structures, etc., where communication devices are located/stored/situated.
What is the the difference between communication devices and communication media?
added device called networking
What is communication device?
A communication device is a peripheral used for communication between the computers and other devices. Modem is a popular communication device which is normally used for Internet communication. Infrared, Bluetooth and LAN card are the examples of communication devices.
What are the newest communication devices?
Probably the cell phone.
What are some traditional communication devices?
a device that traditional
