multiple subject fields including signal processing, information theory and biology. In signal processing, a signal is a function that conveys information...

The Signal may refer to: The Signal (2007 American film), a horror film written and directed by David Bruckner, Dan Bush, and Jacob Gentry The Signal (2007...

The Wow! signal was a strong narrowband radio signal detected on August 15, 1977, by Ohio State University's Big Ear radio telescope in the United States...

Signal is an American open-source, encrypted messaging service for instant messaging, voice calls, and video calls. The instant messaging function includes...

busy signal Listen to a busy signal from North America, Hong Kong, South Korea and the Philippines. Example of an old North American busy signal Listen...

Signal Mountain may refer to: Signal Mountain (geography), several mountains or peaks named Signal Signal Mountain (Alberta), a mountain in the Maligne...

Signals are standardized messages sent to a running program to trigger specific behavior, such as quitting or error handling. They are a limited form...

Signal or signaling may refer to: Analog signal Audio signal Digital signal Digital signal (signal processing) Cell signaling, in biology Signalling (economics)...

A forex signal is a suggestion for entering a trade on a currency pair, usually at a specific price and time. The signal is generated either by a human...

Signal processing is an electrical engineering subfield that focuses on analyzing, modifying and synthesizing signals, such as sound, images, potential...

modulation or message signal onto a carrier signal to be transmitted. For example, the message signal might be an audio signal representing sound from...

The Signal Protocol (formerly known as the TextSecure Protocol) is a non-federated cryptographic protocol that provides end-to-end encryption for voice...

security leaders conversed on a group chat using the messaging service Signal about imminent military operations against the Houthis in Yemen code-named...

The Signal Technology Foundation, commonly known as the Signal Foundation, is an American non-profit organization founded in 2018 by Moxie Marlinspike...

Within evolutionary biology, signalling theory is a body of theoretical work examining communication between individuals, both within species and across...

Signal-to-noise ratio (SNR or S/N) is a measure used in science and engineering that compares the level of a desired signal to the level of background...

signaling (cell signalling in British English) is the process by which a cell interacts with itself, other cells, and the environment. Cell signaling...

The Signal is a 2014 American science fiction thriller film directed by William Eubank, written by William and Carlyle Eubank and David Frigerio, and starring...

Signal transduction is the process by which a chemical or physical signal is transmitted through a cell as a series of molecular events. Proteins responsible...

An analog signal (American English) or analogue signal (British and Commonwealth English) is any continuous-time signal representing some other quantity...

A thumb signal, usually described as a thumbs-up or thumbs-down, is a common hand gesture achieved by a closed fist held with the thumb extended upward...

A digital signal is a signal that represents data as a sequence of discrete values; at any given time it can only take on, at most, one of a finite number...

A signal generator is one of a class of electronic devices that generates electrical signals with set properties of amplitude, frequency, and wave shape...

The smoke signal is one of the oldest forms of long-distance communication. It is a form of visual communication used over a long distance. In general...

A railway signal is a visual display device that conveys instructions or provides warning of instructions regarding the driver's authority to proceed....

The signal velocity is the speed at which a wave carries information. It describes how quickly a message can be communicated (using any particular method)...

Signals intelligence (SIGINT) is the act and field of intelligence-gathering by interception of signals, whether communications between people (communications...

An audio signal is a representation of sound, typically using either a changing level of electrical voltage for analog signals or a series of binary numbers...

of digital signal processing (DSP), a digital signal is a discrete time, quantized amplitude signal. In other words, it is a sampled signal consisting...

synchronous digital circuits, a clock signal (historically also known as logic beat) is an electronic logic signal (voltage or current) which oscillates...