Ads
related to: 10 hz tones generator 100 1000 lumens gold series for sale craigslistjackery.com has been visited by 10K+ users in the past month
Search results
Results from the WOW.Com Content Network
The supervisory signals used the same two frequencies, but each supervisory signal started with both tones together (for 150 ms) followed, without a gap, by a long (350 ms) or short (100 ms) period of a single tone of 2400 Hz or 2040 Hz. Phreaks in Europe built System 4 blue boxes that generated these signals.
95 dB @ 3,100 Hz tone are used in many current notification devices. [1] 80 dB @ 520 Hz tone are used in newer notification devices. [1] 70 dB to 100 dB weighted for human hearing (higher decibels, in the 100 to 115 dB range, were common with older electromechanical horns) [citation needed] Light (visible signals) 15 cd to 1,000 cd candela ...
A programmable sound generator (PSG) is a sound chip that generates (or synthesizes) audio wave signals built from one or more basic waveforms, and often some kind of noise. PSGs use a relatively simple method of creating sound compared to other methods such as frequency modulation synthesis or pulse-code modulation .
L-100 series 1961–1968 [19] First Hammond to retail for under £1,000. [29] L-100A Same as L-100 but with additional Percussion voices such as Guitar, Banjo, etc., alternating reiteration on Xylophone and Marimba and rhythm effects (Cymbal and Brush) for the Lower Manual and Pedals. L-200 Included built-in Rhythm II rhythm unit. Porta B series
A signal generator is one of a class of electronic devices that generates electrical signals with set properties of amplitude, frequency, and wave shape. These generated signals are used as a stimulus for electronic measurements, typically used in designing, testing, troubleshooting, and repairing electronic or electroacoustic devices, though it often has artistic uses as well.
The lowest series has adjacent tones that are roughly in the harmonic ratio of 2 0.05 to 1 (≈1.035265), while the other two series have adjacent tones roughly in the ratio of 10 0.015 to 1 (≈1.035142). An example technical description can be found in a Philips technical information sheet about their CTCSS products.
A completely different approach to function generation is to use software instructions to generate a waveform, with provision for output. For example, a general-purpose digital computer can be used to generate the waveform; if frequency range and amplitude are acceptable, the sound card fitted to most computers can be used to output the generated wave.
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.
Ads
related to: 10 hz tones generator 100 1000 lumens gold series for sale craigslistjackery.com has been visited by 10K+ users in the past month