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Zener diode based noise source. A noise generator is a circuit that produces electrical noise (i.e., a random signal). Noise generators are used to test signals for measuring noise figure, frequency response, and other parameters. Noise generators are also used for generating random numbers. [1]
A fan controller with LEDs indicating fan status and potentiometers and switches to control fan speeds Another method, popular with PC hardware enthusiasts, is the manual fan speed controller. They can be mounted in an expansion slot or a 5.25" or 3.5" drive bay or come built into a computer's case.
The Texas Instruments SN76489 is a programmable sound generator chip from the 1980s, used to create music and sound effects on computers and video game systems. Initially developed by Texas Instruments for its TI-99/4A home computer, it was later updated and widely adopted in systems like the BBC Micro , ColecoVision , IBM PCjr , Sega's Master ...
SW17 (toggle or momentary) is the switch that enables the internal noise generator clock. If this switch is closed then the noise generator operates on its internal clock. R29 A 47k fixed resistor. This resistor is in series with SW17 and is the current reference for the internal noise generator clock. In the 76477 spec sheet this is called out ...
Quiet fan manufacturers include Nexus, EBM-Papst, [30] Yate Loon, Scythe, [31] and Noctua. [32] Extensive comparative surveys have been posted by SPCR [33] [34] and MadShrimps. [35] [36] Fan noise is often proportional to fan speed, so fan controllers can be used to slow down fans and to precisely
MyNoise Developer(s) Dr. Ir. Stéphane Pigeon Website mynoise.net MyNoise (stylised as myNoise) is a white noise website and app created by Stéphane Pigeon. It offers many different natural soundscapes, as well as synthetic noises such as white noise. History MyNoise was created in 2013 by Stéphane Pigeon, a Belgian audio processing engineer, sound designer, and electrical engineer. By April ...
The enclosure included Danley's patented cooling fan powered by a DC-rectified portion of the audio signal, kicking in only at high voltage levels. The servo motors in the subwoofer allowed for 3 to 4 times as much peak-to-peak deflection of the woofer cones, compared to what was available at the time with conventional magnetic coil woofers.
A LectroFan white noise machine A clock radio that includes a white noise machine. A white noise machine is a device that produces a noise that calms the listener [citation needed], which in many cases sounds like a rushing waterfall or wind blowing through trees, and other serene or nature-like sounds.