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...

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...

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

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

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

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

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

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

as "TX") is the process of sending or propagating an analog or digital signal via a medium that is wired, wireless, or fiber-optic. Transmission system...

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

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...

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

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

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...

A distress signal, also known as a distress call, is an internationally recognized means for obtaining help. Distress signals are communicated by transmitting...

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

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...

The Signal for Help (or the Violence at Home Signal for Help) is a single-handed gesture that can be used over a video call or in person by an individual...

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...

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

A signal corps is a military branch, responsible for military communications (signals). Many countries maintain a signal corps, which is typically subordinate...

The signal crayfish (Pacifastacus leniusculus) is a species of crayfish indigenous to North America. Introduced to Europe in the 1960s to supplement the...

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 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...

electronics, a signal trace or circuit trace on a printed circuit board (PCB) or integrated circuit (IC) is the equivalent of a wire for conducting signals. Each...

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