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Mscgen (short for MSC generator) is a software tool for drawing message sequence charts [1] from a simple to manage text-based source file. Rendered charts can be output in PNG, SVG and PostScript, with hyperlink information in ismap format.
A red box is a phreaking device that generates tones to simulate inserting coins in pay phones, thus fooling the system into completing free calls. In the United States, a nickel is represented by one tone, a dime by two, and a quarter by a set of five. Any device capable of playing back recorded sounds can potentially be used as a red box.
The history of humor on the Internet begins together with the Internet itself. Initially, the internet and its precursors, LANs and WANs, were used merely as another medium to disseminate jokes and other kinds of humor, in addition to the traditional ones ("word of mouth", printed media, sound recording, radio, film, and TV). [1]
The PTX8 has mixed stereo L/R outputs and 8 individual outputs (one per Tone Generator). When none of the individual outputs are being used, tone generators are panned across the stereo output. Tone generators 3 & 4 are panned left, 1, 2, 7, & 8 are panned center; 5 & 6 are panned right.
In the case of scripted comedies, most bleeping may be used for humorous purposes, and other sound effects may be substituted for the bleep tone for comical effect; examples of this include a slide whistle, a baby cooing, dolphin noises, or the "boing" of a spring.
A cue tone is a message consisting of audio tones, used to prompt an action. In broadcast networks , a DTMF cue tone or subaudible tone was traditionally used to prompt insertion of a local TV commercial or radio advertisement by the broadcast automation equipment at the broadcast station or cable headend .
Simplified diagram of how a tonewheel works Goldschmidt tone wheel (1910), used as an early beat frequency oscillator. A tonewheel or tone wheel is a simple electromechanical apparatus used for generating electric musical notes in electromechanical organ instruments such as the Hammond organ and in telephony to generate audible signals such as ringing tone.
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