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50 milliseconds – cycle time for the lowest audible tone, 20 Hz; 60 milliseconds – cycle time for European 16.7 Hz AC electrified railroad power grid; 60 milliseconds – the time interval between gear changes on a Ferrari 458 Spider; with a 7-speed dual-clutch automatic transmission; 62.5 milliseconds – a sixty-fourth note at 60 BPM
millisecond: 10 −3 s: One thousandth of a second. Shortest time unit used on stopwatches. jiffy (electronics) ~ 10 −3 s: Used to measure the time between alternating power cycles. Also a casual term for a short period of time. centisecond: 10 −2 s: One hundredth of a second. decisecond: 10 −1 s: One tenth of a second. second: 1 s: SI ...
An A/D Converter has a "clock" pin driven by a similar system to set the sampling rate. With any particular CPU, replacing the crystal with another crystal that oscillates at half the frequency (" underclocking ") will generally make the CPU run at half the performance and reduce waste heat produced by the CPU.
Its SI unit is the reciprocal seconds (s −1); other common units of measurement include the hertz (Hz), cycles per second (cps), and revolutions per minute (rpm). [ 1 ] [ a ] [ b ] Rotational frequency can be obtained dividing angular frequency , ω, by a full turn (2 π radians ): ν =ω/(2π rad).
millisecond: ms One thousandth of one second 1 ms: The time for a neuron in the human brain to fire one impulse and return to rest [13] 4–8 ms: The typical seek time for a computer hard disk: 10 −2: centisecond cs One hundredth of one second 1.6667 cs: The period of a frame at a frame rate of 60 Hz.
This sampling frequency is twice the 48 kHz standard commonly used with audio on professional equipment. Practical frequency response for 96,000 Hz sample rate is: 2 Hz - 44 kHz 176,400 Hz Sampling rate used by HDCD recorders and other professional applications for CD production. Four times the frequency of 44.1 kHz. 192,000 Hz
The hertz (symbol: Hz) is the unit of frequency in the International System of Units (SI), often described as being equivalent to one event (or cycle) per second. [ 1 ] [ a ] The hertz is an SI derived unit whose formal expression in terms of SI base units is s −1 , meaning that one hertz is one per second or the reciprocal of one second . [ 2 ]
Atomic clocks usually have an external PPS output, although internally they may operate at 9,192,631,770 Hz. [3] PPS signals have an accuracy ranging from 12 picoseconds to a few microseconds per second, or 2.0 nanoseconds to a few milliseconds per day based on the resolution and accuracy of the device generating the signal.