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| | To say Wusthof manufactures the most effective kitchen knives set is no doubt a bold statement. A great knife is perhaps the most critical item in a hunter's tool kit. Columbia River Knife & Tool or(CRKT) began producing knives in 1994. In addition, most users consider this set a correct worth for dollars if you are searching for good top quality knives with a reasonable cost tag. Having said that, if you are an occasional cook, then this set will be just what you want. Victorinox kitchen knives are truly an economical brand and our top rated budget kitchen knives set. Substantial knife block sets normally have too many knives in them, and neither the preferred lengths and shapes nor knives you may choose. This is the finest knife set we've ever had. Nice set of knives!<br><br>The bolster is made to sageguard your fingertips from the cutting knife edge which is basically constructive factor. On a full-bolstered knife, following a lot of years of blade sharpening , the bolster stands out previous the blade and is simultaneously unappealing and causes it to be difficult chop with the knife flat on prime of the cutting board A tapered bolster delivers for uncomplicated use and honing and all cutlery require to have them.<br><br>If the knife delivers a lot of shock to your hand as you chop or slice, you might want to seek out a slightly distinct design. The common balance of the knife ought to feel nice to your certain style as well. Choosing a knife that is comfortable to you will enable ensure that you won't wear your self out when you have to do a lot of cutting. I did not purchase my set simply because I will need a top performing Chef's knife.<br><br>If you have any concerns concerning where by and how to use [http://www.thebestkitchenknivesreviews.com/best-kitchen-knives-comparison-chart/ Kitchen Knife Brand Comparison], you can get in touch with us at our website. Move occurs from just about any location with no set up. Using the five principles of balance, looseness, body unity, empathy and adaptive movement along with any hand weapon is an enhancement of employing the weapon but regardless the knife also has edges that bare-hand fighting can not ever fit. These are a necessity for just about any knife set considering the fact that bakery is among the largely consumed foods there is.<br><br>Balance is a different issue that can ensure safety, and the best knife producers use high tech solutions to make confident the weight is distributed evenly. Typically, there isn't one particular specific, "finest chef's knife."Individuals come in all sizes and the trick is in finding the one knife that feels appropriate for you, does what you want it to, is sharp and stays sharp. The knife ought to be evenly balanced in your hand and really feel comfortable.<br><br>Much better knives tend to have full tangs (the element of the knife blade that extends into the handle), though as with kitchen knives, there are exceptions. The Victorinox Rosewood Straight Edge Steak Knife Set , for instance, only has a partial tang. In reading Amazon reviews and threads on Chowhound , it appears individuals favor a knife handle that feels ample in their hand—not little and wimpy, but also not super significant and clunky like a reduce-rate steakhouse knife.<br><br>A chef's knife is noticed as an all-purpose cutlery utensil, as it is long and sturdy enough to do several different tasks with regards to food preparation. Beneficial hint: if you have a dud knife that's blunt and you don't thoughts if you kill it, in a pinch you can usually sharpen it quite properly on a piece of stone - a brick wall, or a window sill , both function actually well! Typically a coin is incorporated in the gift with the knife to be handed back to the giver.<br><br>Here you may perhaps want to contemplate a knife with a a lot more appealing handle or customized style. The cleaver possesses exclusive traits as opposed to any other knife in your kitchen its technique utilised to cut, its weight and thickness, and its edge. There is usually a hole, cut into the blade, in the forward leading corner just below the spine, which serves no sensible objective other than getting employed to hang the knife on a rack, or traditionally a meat hook. I cannot do without having my heavy Chef's knife. |
| {{Use mdy dates|date=July 2013}}
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| {{mergefrom|Linear pulse-code modulation|discuss=Talk:Linear_pulse-code_modulation#Merge_with_Pulse_Code_Modulation|date=March 2013}}
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| '''Pulse-code modulation''' ('''PCM''') is a method used to [[Digital signal|digitally]] represent sampled [[analog signal]]s. It is the standard form of [[digital audio]] in computers, [[Compact Disc]]s, [[digital telephony]] and other digital audio applications. In a PCM stream, the [[amplitude]] of the analog signal is sampled regularly at uniform intervals, and each sample is [[Quantization (signal processing)|quantized]] to the nearest value within a range of digital steps.
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| PCM streams have two basic properties that determine their fidelity to the original analog signal: the [[sampling rate]], which is the number of times per second that samples are taken; and the [[Audio bit depth|bit depth]], which determines the number of possible digital values that each sample can take.
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| ==History==
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| In the history of electrical communications, the earliest reason for sampling a signal was to interlace samples from multiple [[telegraphy]] sources, and convey them over a single telegraph cable. Telegraph [[time-division multiplexing]] (TDM) was conveyed as early as 1853, by the American inventor [[Moses G. Farmer]]. Electrical engineer W. M. Miner, in 1903, used an electro-mechanical [[Commutator (electric)|commutator]] for time-division multiplex of multiple telegraph signals, and also applied this technology to telephony. He obtained intelligible speech from channels sampled at a rate above 3500–4300 Hz; lower rates were unsatisfactory. This was TDM, but [[pulse-amplitude modulation]] (PAM) rather than PCM.
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| In 1926, Paul M. Rainey of Western Electric patented a [[facsimile machine]] which transmitted its signal using 5-bit PCM, encoded by an opto-mechanical analog-to-digital converter.<ref>U.S. patent number 1,608,527; also see p. 8, ''Data conversion handbook'', Walter Allan Kester, ed., Newnes, 2005, ISBN 0-7506-7841-0.</ref> The machine did not go into production. British engineer [[Alec Reeves]], unaware of previous work, conceived the use of PCM for voice communication in 1937 while working for [[International Telephone and Telegraph]] in France. He described the theory and advantages, but no practical use resulted. Reeves filed for a French patent in 1938, and his US patent was granted in 1943.
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| The first transmission of [[Speech communication|speech]] by digital techniques was the [[SIGSALY]] encryption equipment used for high-level Allied communications during [[World War II]]. In 1943, the [[Bell Labs]] researchers who designed the SIGSALY system became aware of the use of PCM binary coding as already proposed by Alec Reeves. In 1949 for the Canadian Navy's [[DATAR]] system, [[Ferranti-Packard|Ferranti]] Canada built a working PCM radio system that was able to transmit digitized radar data over long distances.<ref>Porter, Arthur. So Many Hills to Climb (2004) Beckham Publications Group</ref>
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| PCM in the late 1940s and early 1950s used a cathode-ray coding tube with a [[plate electrode]] having encoding perforations.<ref>R. W. Sears, "Electron Beam Deflection Tube for Pulse Code Modulation," Bell Sys. Tech. J., Vol. 27 pp. 44–57</ref><ref>W. M. Goodall, "Television by Pulse Code Modulation," Bell Sys. Tech. J., Vol. 30 pp. 33–49, 1951.</ref> As in an [[oscilloscope]], the beam was swept horizontally at the sample rate while the vertical deflection was controlled by the input analog signal, causing the beam to pass through higher or lower portions of the perforated plate. The plate collected or passed the beam, producing current variations in binary code, one bit at a time. Rather than natural binary, the grid of Goodall's later tube was perforated to produce a glitch-free [[Gray code]], and produced all bits simultaneously by using a fan beam instead of a scanning beam.
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| In the United States, the [[National Inventors Hall of Fame]] has honored [[Bernard M. Oliver]]<ref>
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| {{cite web
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| | title = Bernard Oliver
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| | url = http://www.invent.org/hall_of_fame/211.html
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| | work = National Inventor's Hall of Fame
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| | author =
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| | publisher =
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| | accessdate = February 6, 2011
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| }}</ref>
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| and [[Claude Shannon]]<ref> | |
| {{cite web
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| | title = Claude Shannon
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| | url = http://www.invent.org/hall_of_fame/212.html
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| | work = National Inventor's Hall of Fame
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| | author =
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| | publisher =
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| | accessdate = February 6, 2011
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| }}</ref>
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| as the inventors of PCM,<ref>
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| {{cite web
| |
| | title = National Inventors Hall of Fame announces 2004 class of inventors
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| | url = http://www.scienceblog.com/community/older/2004/6/20045378.shtml
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| | work = Science Blog
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| | author =
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| | publisher =
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| | date = February 11, 2004
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| | accessdate = February 6, 2011
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| }}</ref>
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| as described in 'Communication System Employing Pulse Code Modulation,' {{US patent|2801281}} filed in 1946 and 1952, granted in 1956. Another patent by the same title was filed by [[John R. Pierce]] in 1945, and issued in 1948: {{US patent|2437707}}. The three of them published "The Philosophy of PCM" in 1948.<ref>
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| {{cite journal
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| | journal = Proceeding of the IRE
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| | title = The Philosophy of PCM
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| | author = B. M. Oliver, J. R. Pierce, and C. E. Shannon
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| | publisher =
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| | pages = 1324–1331
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| | issn = 0096-8390
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| | date = Nov 1948
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| | url = http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=1697556
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| | doi = 10.1109/JRPROC.1948.231941
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| }}</ref>
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| PCM was used in [[Japan]] by [[Denon]] in 1972 for the recording and mastering of analogue [[phonograph record]]s, using a [[Quadruplex videotape|2-inch Quadruplex]]-format video recorder for the PCM signal, but this was never intended to be a [[consumer product]].
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| ==Modulation==
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| [[File:Pcm.svg|250px|thumb|right|Sampling and quantization of a signal (red) for 4-bit PCM]]
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| In the diagram, a [[sine wave]] (red curve) is sampled and quantized for PCM. The sine wave is sampled at regular intervals, shown as ticks on the [[x-axis]]. For each sample, one of the available values (ticks on the y-axis) is chosen by some algorithm. This produces a fully discrete representation of the input signal (shaded area) that can be easily encoded as digital data for storage or manipulation. For the sine wave example at right, we can verify that the quantized values at the sampling moments are 7, 9, 11, 12, 13, 14, 14, 15, 15, 15, 14, etc. Encoding these values as [[Binary numeral system#Counting in binary|binary numbers]] would result in the following set of [[nibble]]s: 0111 (2<sup>3</sup>×0+2<sup>2</sup>×1+2<sup>1</sup>×1+2<sup>0</sup>×1=0+4+2+1=7), 1001, 1011, 1100, 1101, 1110, 1110, 1111, 1111, 1111, 1110, etc. These digital values could then be further processed or analyzed by a [[digital signal processor]]. Several PCM streams could also be [[Multiplexing|multiplexed]] into a larger aggregate [[data stream]], generally for transmission of multiple streams over a single physical link. One technique is called [[time-division multiplexing]] (TDM) and is widely used, notably in the modern public telephone system.
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| The PCM process is commonly implemented on a single [[integrated circuit]] generally referred to as an [[analog-to-digital converter]] (ADC).
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| ==Demodulation==
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| To recover the original signal from the sampled data, a "demodulator" can apply the procedure of modulation in reverse. After each sampling period, the demodulator reads the next value and shifts the output signal to the new value. As a result of these transitions, the signal has a significant amount of high-frequency energy caused by [[aliasing]]. To remove these undesirable frequencies and leave the original signal, the demodulator passes the signal through analog filters that suppress energy outside the expected frequency range (greater than the [[Nyquist frequency]] <math>f_s / 2 </math>).<ref group=note>Some systems use [[digital filter]]ing to remove some of the aliasing, converting the signal from digital to analog at a higher sample rate such that the analog [[anti-aliasing filter]] is much simpler. In some systems, no explicit filtering is done at all; as it's impossible for any system to reproduce a signal with infinite bandwidth, inherent losses in the system compensate for the artifacts — or the system simply does not require much precision.</ref> The [[sampling theorem]] shows PCM devices can operate without introducing distortions within their designed frequency bands if they provide a sampling frequency twice that of the input signal. For example, in [[telephony]], the usable [[human voice|voice]] frequency band ranges from approximately 300 [[Hertz|Hz]] to 3400 Hz. Therefore, per the [[Nyquist–Shannon sampling theorem]], the sampling frequency (8 kHz) must be at least twice the voice frequency (4 kHz) for effective reconstruction of the voice signal.
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| The electronics involved in producing an accurate analog signal from the discrete data are similar to those used for generating the digital signal. These devices are [[Digital-to-analog converter]]s (DACs). They produce a [[voltage]] or [[Electric current|current]] (depending on type) that represents the value presented on their digital inputs. This output would then generally be filtered and amplified for use. | |
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| ==Limitations==
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| There are potential sources of impairment implicit in any PCM system:
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| * Choosing a discrete value that is near but not exactly at the analog signal level for each sample leads to [[quantization error]].<ref group=note>Quantization error swings between -''q''/2 and ''q''/2. In the ideal case (with a fully linear ADC) it is [[uniform distribution (continuous)|uniformly distributed]] over this interval, with zero mean and variance of ''q''<sup>2</sup>/12.</ref>
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| * Between samples no measurement of the signal is made; the [[sampling theorem]] guarantees non-ambiguous representation and recovery of the signal only if it has no energy at frequency ''f<sub>s</sub>''/2 or higher (one half the sampling frequency, known as the [[Nyquist frequency]]); higher frequencies will generally not be correctly represented or recovered.
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| * As samples are dependent on ''time'', an accurate clock is required for accurate reproduction. If either the encoding or decoding clock is not stable, its frequency drift will directly affect the output quality of the device.<ref group=note>A slight difference between the encoding and decoding clock frequencies is not generally a major concern; a small constant error is not noticeable. Clock error does become a major issue if the clock is not stable, however. A drifting clock, even with a relatively small error, will cause very obvious distortions in audio and video signals, for example.</ref>
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| ==Digitization as part of the PCM process==
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| In conventional PCM, the [[analog signal]] may be processed (e.g., by [[amplitude compression]]) before being digitized. Once the signal is digitized, the PCM signal is usually subjected to further processing (e.g., [[Digital data|digital]] [[data compression]]).
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| PCM with linear quantization is known as [[Linear PCM]] (LPCM).<ref>{{cite web |url=http://www.digitalpreservation.gov/formats/fdd/fdd000011.shtml |title=Linear Pulse Code Modulated Audio (LPCM) |publisher=The Library of Congress |accessdate=March 21, 2010}}</ref>
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| Some forms of PCM combine signal processing with coding. Older versions of these systems applied the processing in the analog domain as part of the [[analog-to-digital]] process; newer implementations do so in the digital domain. These simple techniques have been largely rendered obsolete by modern transform-based [[audio compression (data)|audio compression]] techniques.
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| * [[DPCM]] encodes the PCM values as differences between the current and the predicted value. An algorithm predicts the next sample based on the previous samples, and the encoder stores only the difference between this prediction and the actual value. If the prediction is reasonable, fewer bits can be used to represent the same information. For audio, this type of encoding reduces the number of bits required per sample by about 25% compared to PCM.
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| * [[Adaptive DPCM]] (ADPCM) is a variant of DPCM that varies the size of the quantization step, to allow further reduction of the required bandwidth for a given [[signal-to-noise ratio]].
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| * [[Delta modulation]] is a form of DPCM which uses one bit per sample.
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| In telephony, a standard audio signal for a single phone call is encoded as 8,000 analog samples per second, of 8 bits each, giving a 64 kbit/s digital signal known as [[DS0]]. The default [[signal compression]] encoding on a DS0 is either [[Mu-law algorithm|μ-law (mu-law)]] PCM (North America and Japan) or [[A-law]] PCM (Europe and most of the rest of the world). These are logarithmic compression systems where a 12 or 13-bit linear PCM sample number is mapped into an 8-bit value. This system is described by international standard [[G.711]]. An alternative proposal for a [[floating point]] representation, with 5-bit mantissa and 3-bit radix, was abandoned.
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| Where circuit costs are high and loss of voice quality is acceptable, it sometimes makes sense to compress the voice signal even further. An ADPCM algorithm is used to map a series of 8-bit µ-law or A-law PCM samples into a series of 4-bit ADPCM samples. In this way, the capacity of the line is doubled. The technique is detailed in the [[G.726]] standard.
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| Later it was found that even further compression was possible and additional standards were published. Some of these international standards describe systems and ideas which are covered by privately owned patents and thus use of these standards requires payments to the patent holders.
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| Some ADPCM techniques are used in [[Voice over IP]] communications.
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| ==Encoding for serial transmission==
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| {{Main|Line code}}
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| {{See also|T-carrier|E-carrier}}
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| PCM can be either [[return-to-zero]] (RZ) or [[non-return-to-zero]] (NRZ). For a NRZ system to be synchronized using in-band information, there must not be long sequences of identical symbols, such as ones or zeroes. For binary PCM systems, the density of 1-symbols is called ''ones-density''.<ref>Stallings, William, [http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=01091872 Digital Signaling Techniques], December 1984, Vol. 22, No. 12, [[IEEE]] [[IEEE Communications Magazine|Communications Magazine]]</ref>
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| Ones-density is often controlled using precoding techniques such as [[Run Length Limited]] encoding, where the PCM code is expanded into a slightly longer code with a guaranteed bound on ones-density before modulation into the channel. In other cases, extra [[framing bit]]s are added into the stream which guarantee at least occasional symbol transitions.
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| Another technique used to control ones-density is the use of a [[Scrambler (randomizer)|scrambler]] [[polynomial]] on the [[raw data]] which will tend to turn the raw data stream into a stream that looks [[pseudorandom|pseudo-random]], but where the raw stream can be recovered exactly by reversing the effect of the polynomial. In this case, long runs of zeroes or ones are still possible on the output, but are considered unlikely enough to be within normal engineering tolerance.
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| In other cases, the long term [[direct current|DC]] value of the modulated signal is important, as building up a DC offset will tend to bias detector circuits out of their operating range. In this case special measures are taken to keep a count of the cumulative DC offset, and to modify the codes if necessary to make the DC offset always tend back to zero.
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| Many of these codes are [[bipolar code]]s, where the pulses can be positive, negative or absent. In the typical [[alternate mark inversion]] code, non-zero pulses alternate between being positive and negative. These rules may be violated to generate special symbols used for framing or other special purposes.
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| ==Nomenclature==
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| The word ''pulse'' in the term ''Pulse-Code Modulation'' refers to the "pulses" to be found in the transmission line. This perhaps is a natural consequence of this technique having evolved alongside two analog methods, [[pulse width modulation]] and [[pulse position modulation]], in which the information to be encoded is in fact represented by discrete signal pulses of varying width or position, respectively. In this respect, PCM bears little resemblance to these other forms of signal encoding, except that all can be used in time division multiplexing, and the numbers of the PCM codes are represented as electrical pulses. The device that performs the coding and decoding function in a telephone circuit is called a [[codec]].
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| <!--
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| : ''To be written - topics to be covered:''
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| * development of the PCM concept
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| * Bell Labs and 8 kHz DS0 standard
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| * early ADPCM codecs
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| * [[mu law]] and [[A law]]
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| * development of hi-fi [[digital audio]]
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| * [[NICAM]]
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| * [[Sigma-delta modulation]]
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| -->
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| ==See also==
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| * [[Beta encoder]]
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| * [[Equivalent pulse code modulation noise]]
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| * [[G.711]] – ITU-T standard for audio [[companding]]. It is primarily used in telephony.
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| * [[Linear pulse code modulation]]
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| * [[Nyquist–Shannon sampling theorem]]
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| * [[Quantization (signal processing)]]
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| * [[Sampling (signal processing)]]
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| * [[Signal-to-quantization-noise ratio]] (SQNR) – One method of measuring quantization error.
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| * [[Pulse-density modulation]]
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| ==Notes==
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| {{Reflist|group=note}}
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| ==References==
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| {{Reflist}}
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| ==Further reading==
| |
| * {{cite journal
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| | author = Franklin S. Cooper
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| | authorlink = Franklin S. Cooper
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| | coauthors = Ignatius Mattingly
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| | title = Computer-controlled PCM system for investigation of dichotic speech perception
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| | journal = Journal of the Acoustical Society of America
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| | year = 1969
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| | volume = 46
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| | page = 115
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| | doi = 10.1121/1.1972688
| |
| }}
| |
| * {{cite book
| |
| | author = Ken C. Pohlmann
| |
| | title = Principles of Digital Audio
| |
| | edition = 2nd
| |
| | location = Carmel, Indiana
| |
| | publisher = Sams/Prentice-Hall Computer Publishing
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| | year = 1985
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| | isbn = 0-672-22634-0
| |
| }}
| |
| * {{cite journal
| |
| | author = [[Douglas Whalen|D. H. Whalen]], E. R. Wiley, [[Philip Rubin|Philip E. Rubin]], and [[Franklin S. Cooper]]
| |
| | title = The [[Haskins Laboratories]] pulse code modulation (PCM) system
| |
| | journal = Behavior Research Methods, Instruments, and Computers
| |
| | year = 1990
| |
| | volume = 22
| |
| | pages = 550–559
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| | doi = 10.3758/BF03204440
| |
| | issue = 6
| |
| }}
| |
| * {{cite book
| |
| | author = Bill Waggener
| |
| | title = Pulse Code Modulation Techniques
| |
| | edition =1st
| |
| | location = New York, NY
| |
| | publisher = Van Nostrand Reinhold
| |
| | year = 1995
| |
| | isbn = 0-442-01436-8
| |
| }}
| |
| * {{cite book
| |
| | author = Bill Waggener
| |
| | title = Pulse Code Modulation Systems Design
| |
| | edition = 1st
| |
| | location = Boston, MA
| |
| | publisher = Artech House
| |
| | year = 1999
| |
| | isbn = 0-89006-776-7
| |
| }}
| |
| | |
| ==External links==
| |
| * [http://wiki.multimedia.cx/index.php?title=PCM PCM description on MultimediaWiki]
| |
| * [http://www.ralph-miller.org/ Ralph Miller] and Bob Badgley invented multi-level PCM independently in their work at Bell Labs on [[SIGSALY]]: {{US patent|3912868}} filed in 1943: N-ary Pulse Code Modulation.
| |
| * [http://www.digitalpreservation.gov/formats/fdd/fdd000016.shtml Information about PCM]: A description of PCM with links to information about subtypes of this format (for example [[Linear Pulse Code Modulation]]), and references to their specifications.
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| | |
| {{Bit-encoding}}
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| {{Telecommunications}}
| |
| | |
| [[Category:Quantized radio modulation modes]]
| |
| [[Category:Digital audio recording]]
| |
| [[Category:Audio codecs]]
| |
| [[Category:Computer file formats]]
| |
| [[Category:Multiplexing]]
| |
| [[Category:Telephony signals]]
| |
To say Wusthof manufactures the most effective kitchen knives set is no doubt a bold statement. A great knife is perhaps the most critical item in a hunter's tool kit. Columbia River Knife & Tool or(CRKT) began producing knives in 1994. In addition, most users consider this set a correct worth for dollars if you are searching for good top quality knives with a reasonable cost tag. Having said that, if you are an occasional cook, then this set will be just what you want. Victorinox kitchen knives are truly an economical brand and our top rated budget kitchen knives set. Substantial knife block sets normally have too many knives in them, and neither the preferred lengths and shapes nor knives you may choose. This is the finest knife set we've ever had. Nice set of knives!
The bolster is made to sageguard your fingertips from the cutting knife edge which is basically constructive factor. On a full-bolstered knife, following a lot of years of blade sharpening , the bolster stands out previous the blade and is simultaneously unappealing and causes it to be difficult chop with the knife flat on prime of the cutting board A tapered bolster delivers for uncomplicated use and honing and all cutlery require to have them.
If the knife delivers a lot of shock to your hand as you chop or slice, you might want to seek out a slightly distinct design. The common balance of the knife ought to feel nice to your certain style as well. Choosing a knife that is comfortable to you will enable ensure that you won't wear your self out when you have to do a lot of cutting. I did not purchase my set simply because I will need a top performing Chef's knife.
If you have any concerns concerning where by and how to use Kitchen Knife Brand Comparison, you can get in touch with us at our website. Move occurs from just about any location with no set up. Using the five principles of balance, looseness, body unity, empathy and adaptive movement along with any hand weapon is an enhancement of employing the weapon but regardless the knife also has edges that bare-hand fighting can not ever fit. These are a necessity for just about any knife set considering the fact that bakery is among the largely consumed foods there is.
Balance is a different issue that can ensure safety, and the best knife producers use high tech solutions to make confident the weight is distributed evenly. Typically, there isn't one particular specific, "finest chef's knife."Individuals come in all sizes and the trick is in finding the one knife that feels appropriate for you, does what you want it to, is sharp and stays sharp. The knife ought to be evenly balanced in your hand and really feel comfortable.
Much better knives tend to have full tangs (the element of the knife blade that extends into the handle), though as with kitchen knives, there are exceptions. The Victorinox Rosewood Straight Edge Steak Knife Set , for instance, only has a partial tang. In reading Amazon reviews and threads on Chowhound , it appears individuals favor a knife handle that feels ample in their hand—not little and wimpy, but also not super significant and clunky like a reduce-rate steakhouse knife.
A chef's knife is noticed as an all-purpose cutlery utensil, as it is long and sturdy enough to do several different tasks with regards to food preparation. Beneficial hint: if you have a dud knife that's blunt and you don't thoughts if you kill it, in a pinch you can usually sharpen it quite properly on a piece of stone - a brick wall, or a window sill , both function actually well! Typically a coin is incorporated in the gift with the knife to be handed back to the giver.
Here you may perhaps want to contemplate a knife with a a lot more appealing handle or customized style. The cleaver possesses exclusive traits as opposed to any other knife in your kitchen its technique utilised to cut, its weight and thickness, and its edge. There is usually a hole, cut into the blade, in the forward leading corner just below the spine, which serves no sensible objective other than getting employed to hang the knife on a rack, or traditionally a meat hook. I cannot do without having my heavy Chef's knife.