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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).
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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
How CANopen work?
CANopen is a high-level protocol used for communication among devices within Controller Area Network (CAN) networks. It defines communication services and protocols for managing network devices, allowing devices to easily exchange data and commands. CANopen uses object-oriented concepts like objects, parameters, and services to enable interoperability between devices from different vendors.
How do network adapters work to connect devices to a network?
Network adapters are essential devices for connecting computers, laptops, smartphones and other devices to a network (such as the internet or local area networks). They function as intermediaries between the device and the communication medium (such as cables, Wi-Fi signals or Bluetooth connections), allowing communication to occur efficiently.
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 types of communication devices?
Communication devices include a variety of tools used to convey information, such as smartphones, tablets, and computers for digital communication. Traditional devices like landline telephones and radios also fall under this category. Additionally, specialized devices like walkie-talkies and satellite phones facilitate communication in specific contexts. Emerging technologies like smart speakers and wearable devices further expand the range of communication options available.
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 the function of communication devices?
Communication devices serve the purpose of transmitting data, information, and messages between individuals or systems. They allow for the exchange of information through various means such as voice, text, or multimedia. These devices can include smartphones, computers, tablets, and other hardware that enable connectivity and interaction between users. Ultimately, communication devices facilitate effective and efficient communication in both personal and professional settings.
What are some examples of communication devices?
modem
What is a collection of computer and devices connected together via communication media and devices?
Network
What devices use radio waves for communication and transmission?
Devices that use radio waves for communication and transmission include smartphones, radios, televisions, Wi-Fi routers, and satellite communication systems.
What are communication facilities?
Communication facilities are the place, buildings, structures, etc., where communication devices are located/stored/situated.
