Hertz
The hertz (symbol Hz) is the unit of frequency in the International System of Units (SI) and is defined as one cycle per second. It is named for Heinrich Rudolf Hertz, the first person to provide conclusive proof of the existence of electromagnetic waves.
One of the unit's most common uses is in the description of sine waves and musical tones, particularly those used in radio and other audio-related applications. It is also used to describe the speeds at which computers and other electronics are driven.
Definition
The hertz is equivalent to cycles per second. In defining the second, the International Committee for Weights and Measures declared that "the standard to be employed is the transition between the hyperfine levels F = 4, M = 0 and F = 3, M = 0 of the ground state 2S1/2 of the cesium 133 atom, unperturbed by external fields, and that the frequency of this transition is assigned the value 9 192 631 770 hertz" thereby effectively defining the hertz and the second simultaneously.
2182 kHz
The radio frequency 2 182 kHz is one of the international calling and distress frequency for maritime radiocommunication on a frequency band allocated to the MOBILE SERVICE on primary basis, exclusively for distress and calling operations.
Transmission modes
Transmissions on 2182 kHz commonly use single-sideband modulation (SSB) (upper sideband only). However, amplitude modulation (AM) and some variants such as vestigial sideband are still in use, mainly by vessels with older equipment and by some coastal stations in an attempt to ensure compatibility with older and less sophisticated receivers.
Range
2182 kHz is analogous to channel 16 on the marine VHF band, but unlike VHF which is limited to ranges of about 20 to 50 nautical miles (40 to 90 km) depending on antenna height, communications on 2182 kHz and nearby frequencies have a reliable range of around 50 to 150 nautical miles (90 to 280 km) during the day and 150 to 300 nautical miles (280 to 560 km) or sometimes more at night. The reception range of even a well-equipped station can be severely limited in summer because of static caused by lightning.
44,100 Hz
In digital audio, 44,100 Hz (alternately represented as 44.1 kHz) is a common sampling frequency. Analog audio is recorded by sampling it 44,100 times per second, and then these samples are used to reconstruct the audio signal when playing it back.
44.1 kHz audio is widely used, due to this being the sampling rate used in Compact Discs, dating back to its use by Sony from 1979.
History
The 44.1 kHz sampling rate originated in the late 1970s with PCM adaptors, which recorded digital audio on video cassettes, notably the Sony PCM-1600 (1979) and subsequent models in this series. This then became the basis for Compact Disc digital audio (CD-DA), defined in the Red Book standard (1980). Its use has continued as an option in 1990s standards such as the DVD, and in 2000s, standards such as HDMI. This sampling frequency is commonly used for MP3 and other consumer audio file formats which were originally created from material ripped from Compact Discs.
Why 44.1 kHz?
The rate was chosen following debate between manufacturers, notably Sony and Philips, and its implementation by Sony, yielding a de facto standard. The technical reasoning behind the rate being chosen is as follows.
Podcasts:
KHZ
ALBUMS
- Emotronic released: 2000
- Cryogenic Sleep released:
KHZ
ALBUMS
- La Terrrazza Atmospherical Fun Club 2008 released: 2008
- Detached Works [01] released: 2007
- Антон Кубиков: Sonic Affairs released: 2007
- Outhood EP released: 2006
- Radio Glitch released: 2006
- Soft Gum Switches released: 2006
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2000 MAN
by: KissWell, my name it is a number it's on a piece of plastic film
And I've been growin' funny flowers outside on my little window sill
Don't you know I'm a 2,000 man
And my kids, they just don't understand me at all
You know, my wife still respects me even though I really misuse her
I am having an affair with the Random computer
Don't you know I'm a 2,000 man
And my kids, they just don't understand me at all
Oh daddy, proud of your planet, oh mommy, proud of your sun
Oh daddy, proud of your planet, oh mommy, proud of your sun
Oh daddy, your brain's still flashin' like they did when you were young
Or did they come down crashin' seeing all the thing's you'd done
Spacin' out havin' fun
Oh daddy, proud of your planet, oh mommy, proud of your sun
Oh daddy, proud of your planet, oh mommy, proud of your sun
Oh daddy, your brain's still flashin' like they did when you were young
Or did they come down crashin' seeing all the thing's you'd done
Spacin' out havin' fun
Don't you know I'm a 2,000 man
And my kids, they just don't understand me at all
Don't you know I'm a 2,000 man
And my kids, they just don't understand me at all
Understand me, understand me, understand me
Don't you know I'm a 2,000 man
And my kids, they just don't understand me at all
Don't you know I'm a 2,000 man
And my kids, they just don't understand me at all
I'm a 2,000 man, I'm a 2,000 man
I'm a 2,000 man, I'm a 2,000 man
Latest News for: khz
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