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Ringing noise from an electromechanical telephone Example of a short digital tune which could be used as a ringtone on a mobile phone. A ringtone is the sound made by a telephone to indicate an incoming telephone call. Originally referring to the sound of electromechanical striking of bells or gongs, the term refers to any sound by any device ...
Social network ringback tones provide interactive social network content to subscribers. Mixcess is the first platform (social network) using IRRBTs in the United States. The IRRBT was developed by Ring Plus, Inc. (U.S. Patent No. 7,227,929 invented by Karl Seelig, et al.). The IRRBT can be used to share videos, music and messages from friends.
For example, calling a US phone in Europe may return a European ringback tone or vice versa. Increasingly, networks may opt to play their own domestic tones instead, making roaming seamless. In this case the ringing state is sent by the host network and the tone is generated by the home network.
A ring generator or ringing voltage generator is a device which outputs 20 cycle sinusoidal AC at up to 110 volts peak to power bells or annunciators in one or more telephone extensions. [4] The output stops if a handset is taken off the hook. In terminology devised by phone phreaks, a ringing generator is a magenta box.
The term "ringing" is most often used for ripples in the time domain, though it is also sometimes used for frequency domain effects: [2] windowing a filter in the time domain by a rectangular function causes ripples in the frequency domain for the same reason as a brick-wall low pass filter (rectangular function in the frequency domain) causes ...
Some later ringing machines also generated a 50 Hz dial tone. The modern dial tone varies between countries. The Precise Tone Plan for the North American Numbering Plan of the US , Canada , and various Caribbean nations specifies a combination of two tones (350 Hz and 440 Hz) which, when mixed, creates a beat frequency of 90 Hz.
A sound-powered telephone is a communication device that allows users to talk to each other with the use of a handset, similar to a conventional telephone, but without the use of external power. This technology has been used since at least 1944 [ 1 ] for both routine and emergency communication on ships to allow communication between key ...
Special effects (usually visual), illusions used in film, television, and entertainment; Sound effects, sounds that are artificially created or enhanced; SFX, a British magazine covering the topics of science fiction and fantasy; SFX (Science Fiction Expo), a convention in Toronto, Canada; SFX Entertainment, American promoter
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