| 释义 |
▪ I. matrix, n.|ˈmeɪtrɪks|
Pl. matrixes, matrices |ˈmeɪtrɪsiːz|.
[a. L. mātrix (stem mātrīc-), in late L. womb, in older Latin pregnant animal, female animal used for breeding; app. f. māter mother, by change of the ending into the suffix of fem. agent-nouns. Cf. matrice.
The L. plural matrices is normally pronounced |ˈmeɪtrɪsiːz|, formerly |məˈtraɪsiːz|, but in the industrial sense 4 the prevailing pronunciation is |ˈmætrɪsiːz|, prob. from association with the pl. of matrice.]
1. The uterus or womb. Also occas. used for ovary, esp. with reference to oviparous animals.
1526Tindale Luke ii. 23 Every man chylde that fyrst openeth the matrix shalbe called holy to the lorde. 1547Boorde Brev. Health iii. 8 Abhorsion..maye come by ventositie and lubricite of humours in the matryx. 1615Crooke Body of Man 272 The partes of the Female are the wombe and the rest which by a general name are called matrices. 1655Moufet & Bennet Health's Improv. (1746) 202 The Matrix of Beasts..is but a sinewy and hard Substance. 1726–31Tindal Rapin's Hist. Eng. (1743) II. xvii. 74 note, The women that attended about Queen Mary alledged that her Matrix was consumed. 1765Treat. Dom. Pigeons 15 The ovary, or upper matrix of the hen, or female bird. 1803Med. Jrnl. IX. 57 The matrix..was uncommonly small, and the right ovarium..had attached to it small excrescences. 1816Kirby & Sp. Entomol. II. 36 This part..is now a vast matrix of eggs. 1840Cuvier's Anim. Kingd. 40 The foetus, immediately after conception, descends..into the matrix.
2. a. A place or medium in which something is ‘bred’, produced, or developed.
1555Eden Decades 31 margin, Mountaynes are the matrices of golde. Ibid. 141 They founde certaine pearles coommynge foorthe of their matreces. 1594Plat Jewell-ho. i. 22 That which is yet chalke within the Matrix of the earth. 1641French Distill. v. (1651) 161 Untill they..be received into certain matrixes in the earth which may make them put forth this potentiall saltnesse into act. 1671J. Webster Metallogr. iii. 46 Framed in their several seminaries, matrixes, or seed-husks. 1691Ray Creation ii. (1692) 82 A convenient Harbor or Matrix to cherish and hatch their Eggs. 1713Derham Phys.-Theol. iv. xiii. 230 These Matrixes may much conduce to the Maturation and Production of the Young. 1727–52Chambers Cycl. s.v., The earth is the matrix wherein seeds sprout; and marcasites are by many considered as the matrixes of metals. 1853Kane Grinnell Exp. xviii. (1857) 138 The question whether unmixed snow can act as a vegetative matrix. 1879H. George Progr. & Pov. x. ii. (1881) 453 This is the matrix in which mind unfolds. 1880Bastian Brain 39 This intermediate tissue is..the probable matrix wherein and from which new nerve fibres..are evolved in animals.
b. A place or point of origin and growth.
1605Camden Rem. (1637) 56 The old German tongue, which undoubtedly is the matrix and mother of our English. 1867Manning Eng. & Christendom 242 The root and matrix of the Catholic Church. 1896Peterson Mag. VI. 263/1 The matrix of the anti-war feeling was in New England.
c. The formative part of an animal organ, e.g. the pulp and capsule of the mammalian tooth; the hair-papilla (Syd. Soc. Lex. 1890); the ‘bed’ in which the finger or toe-nails grow.
1835–6Todd Cycl. Anat. I. 351/2 The matrix, or organ by which the perfect feather is produced, has the form of an elongated cylindrical cone. 1854Owen Skel. & Teeth in Circ. Sci., Organ. Nat. I. 280 The matrix of certain teeth does not give rise..to the germ of a second tooth. 1858H. Gray Anat. 545 The part of the cutis beneath the body and root of the nail is called the matrix.
d. Bot. The body on which a fungus or a lichen grows.
1857Berkeley Cryptog. Bot. §39. 54 The nature of the communication between the plants and matrix in the parasitic fungi. 1874Cooke Fungi 25 These spores..deposit themselves..on the surface of the Tremella and on its matrix.
†e. ‘The inward, soft, pithy and spungy part of any Tree or Plant’ (Phillips, ed. Kersey, 1706).
1693tr. Blancard's Phys. Dict. (ed. 2), Matrix,..Among Vegetables it signifies the Marrow or Heart of a Plant. 1704J. Harris Lex. Techn. I. Matrix of a Tree or Plant, is the same with what the Botanists call Cor.
3. a. An embedding or enclosing mass; esp. the rock-mass surrounding or adhering to things embedded in the earth, as metal (see gangue), fossils, gems and the like.
1641French Distill. v. (1651) 161 Which..as yet have no saline tast, untill they meet with such principles, and be received into certain matrixes in the earth. 1756–7tr. Keysler's Trav. (1760) I. 48 In the matrix of an emerald, you may see how this gem concretes. 1802Playfair Illustr. Hutton. Theory 78 Some of the species of whinstone are the common matrices of agates and chalcedonies. 1871Trans. Amer. Inst. Mining Engin. I. 95 Their [sc. ores] earthy portions we designate as their ‘matrix’ or ‘gangue’. 1884Knowledge 4 Apr. 222/2 The consolidated eruptive mud of the mines was believed by some to be the true matrix of the diamond.
b. Biol. The substance situated between animal or vegetable cells.
1802Med. Jrnl. VIII. 300 Their vascular structure [sc. of bones] is enveloped in a matrix. 1875Bennett & Dyer tr. Sachs' Bot. 54 The matrix which surrounds the grains of aleurone in oily seeds is..always a mixture of oily matter and albuminoids. 1881Mivart Cat 17 The structureless substance and fibres form what is called the matrix of the tissue. 1890Cooke Introd. Fresh-w. Algæ 156 The mucous matrix containing the families of cells seems [etc.]. 1896Allbutt's Syst. Med. I. 115 The intercellular matrix undergoes modifications or degenerative changes during inflammation.
4. a. A mould in which something is cast or shaped; in Type-founding, a piece of metal (usually copper) on which the letter has been stamped in intaglio by means of a punch, so that it forms a mould for the face of the type; in Coining, the stamp and ‘bed’ used for striking coins; in Stereotyping, the paper squeeze of a form of type, serving as a mould for a type-metal cast.
1626Ussher Lett. (1686) 343 His Matrices of the Oriental Tongues are bought by Elzevir the Printer. 1695Woodward Nat. Hist. Earth (1723) 22 These Shells having served as Matrices or Moulds to them [sc. fossils]. 1709Tanner 3 Oct. in Ballard MSS. IV. 53 They find the want of Matrices at their Press. 1832Babbage Econ. Manuf. xi. (ed. 3) 74 Each matrix being in fact a piece of copper of the same size as the type. 1832Act 2 Will. IV, c. 34 §10 Any Puncheon, Counter-puncheon, Matrix, Stamp, Die, Pattern or Mould in or upon which there shall be made or impressed..the Figure [etc.]..of any of the King's current Gold or Silver Coin. 1851D. Wilson Preh. Ann. (1863) I. ii. ii. 347 Moulded into form in the double matrix of stone or metal. 1859Sala Gas-light & D. ii. 27 His nimble fingers are shaping out the matrix of a monstrous human face, for a pantomimic mask. 1868Archæol. Jrnl. XXV. 247 Matrix of the seal of William Picard [exhibited]. 1879J. Timbs in Cassell's Techn. Educ. i. 27/2 Founding metal types in a matrix or mould. 1902J. E. Hodgkin Rariora II. 52 The discovery or invention of the leaden matrix, which played..so important a part in very early typography.
b. Antiq. The bed or hollowed place in a slab in which a monumental brass is fixed.
1861Haines Mon. Brasses i. cxxiii, There is the matrix of a brass at Tormarton. 1863Sir G. G Scott Glean. Westm. Abb. (ed. 2) 150 Traces of the matrices of two brass shields. 1864Boutell Her. Hist. & Pop. xx. 337 Deeply scored with the matrices of the lost Brasses. 1890J. T. Fowler in Proc. Soc. Antiq. Ser. ii. XIII. 39 The grooves and holes for running lead to the rivets are distinctly seen in the matrices.
c. A (positive or negative) copy of an original disc recording that is used in the making of other copies; spec. one used as a stamper.
1904S. R. Bottone Talking Machines & Records 86 A copper matrix is first made from it [sc. the original disc] by electrotyping... From the copper matrix thus produced any number of duplicates can be moulded out of ebonite by hot pressure. 1918H. Seymour Reproduction of Sound 175 A stamper is a working matrix for pressing records, and as such is merely a duplicate of the master matrix. Ibid. 310 To get an exact replica of a master matrix, an intermediate process is necessitated, in the production of a ‘mother’ matrix, which is a facsimile in metal of the original record..from which the subsequent negatives can be obtained. 1922O. Mitchell Talking Machine Industry vi. 69 Several matrices are formed, which are then nickel-plated, polished and receive a strong backing of heavy steel as a support. They are then ready for the presses. 1929Melody Maker Apr. 375/2 For sale. Matrices by leading U.S.A. Records Company, containing latest and biggest American successes. 1935H. C. Bryson Gramophone Record vi. 142 Negative matrices, i.e., master and stamper, may be made to reproduce by means of a special needle, the end of which is split into a tiny fork which just fits over the ridge. 1952[see mother n.1 11]. 1964P. J. Guy Disc Recording & Reproduction vi. 76 When the third shell—which is called the Matrix or Stamper—is stripped off, its ridges are nickel plated.
d. Photogr. A dyed print in relief used for transferring colour to a final colour print.
1947Van Nostrand's Sci. Encycl. (ed. 2) 917/2 Dyed relief films or differentially hardened films are generally called matrices when used in an imbibition process. 1957R. W. G. Hunt Reproduction of Colour v. 44 The matrix film is..then washed with hot water to leave a hardened gelatin relief image. 1970C. B. Neblette Fund. Photogr. xxii. 312 After drying, the films, now termed matrices, are dyed in the proper colours.
5. Dentistry. A plate of metal or composition to serve as a temporary wall for a cavity of a tooth during filling.
1883G. Cunningham in Dental Record III. 458 No matter whether one or two or even all the walls of the cavity are gone, they may be restored by a matrix. Ibid. 529 Ordinary tinned iron, and also dental alloy, have been used for the purpose of matrices, but have been entirely discarded by me in favour of platinum.
6. Math. A rectangular arrangement of quantities or symbols.
1858Cayley in Coll. Math. Papers (1889) II. 475 The term matrix might be used in a more general sense, but in the present memoir I consider only square and rectangular matrices. 1902Encycl. Brit. XXV. 277/2 A matrix has in many parts of mathematics a signification apart from its evaluation as a determinant. Ibid. 278/1 The matrix consists of n rows and n columns.
b. spec. in Logic. An array of symbols representing truth-values, giving the result of all possible assignments of truth-values to components of a propositional form or proposition; = truth-table. Also, that part of a truth-table which is an array of the total truth-possibilities (see quot. 1965). Also, a set of basic truth-tables for a particular system of logic (see quot. 1973). Also attrib., as matrix method, etc.
1914C. I. Lewis in Jrnl. Philos., Psychol. & Sci. Methods XI. 600 The matrix algebra for implications is useful as an instrument for investigating the interrelations of necessity, truth, possibility, falsity. 1932― & Langford Symbolic Logic vii. 201 That any principle, expressible in the symbols of the system, holds or does not hold can be determined by investigating its truth-status for all combinations of the truth-values of the elements. This is the matrix method. 1955A. N. Prior Formal Logic 243 In the other matrices, the corner values are the usual ones for the corresponding two-valued operators. 1965Hughes & Londey Elements of Formal Logic iii. 21 The array of possible combinations of truth-values of the variables (always set out on the left) will be called the matrix. 1973J. J. Zeman Modal Logic v. 89 What we refer to may be called the matrix method... A truth-value system, or matrix, may be thought of as a set of tables, one for each of the primitive operators of the system, which may be used in computing a ‘truth table’ for any wff of the system.
c. Logic. An expression that would become a statement if its variables were replaced by constants, i.e. by names of individuals or classes or statements, as appropriate; = either propositional function or statement-form, depending on which type it is; esp., in predicate calculus, a quantifier-free part of a formula (see quots. 1954, 1971).
1908B. Russell in Amer. Jrnl. Math. XXX. 238 Then p/a, which we will call a matrix, may take the place of a function. 1910Whitehead & Russell Principia Math. I. 262 Let us give the name of matrix to any function, of however many variables, which does not involve any apparent variables. 1932Lewis & Langford Symbolic Logic ix. 267 Such functions as f(x) and p {logicor} q..we may call matrices. 1954I. M. Copi Symbolic Logic ix. 298 In any wff in prenex normal form (Qx1) (Qx2)..(Qxn) G the group of quantifiers (Qx1)(Qx2)..(Qxn) is the prefix and the quantifier-free formula G is the matrix. 1971G. Hunter Metalogic 252 A formula A is in prenex normal form iff it is of the form Qv1..QvnB, where each Q is either {logicand} or {logicor}, n ⩾ 0, B is a wff, and no quantifiers occur in B. The B..is called the matrix of A, and the part of A (if any) that precedes the matrix is called the prefix.
d. Computers. An interconnected array of diodes, cores, or other circuit elements that has a number of inputs and outputs and somewhat resembles a lattice or grid in its circuit design or physical construction.
1948Gloss. Computer Terms (Mass. Inst. Technol. Servomechanisms Lab. Rep. R-138) 7 Matrix switch, a multi-position switch used in computers for decoding binary numbers. By mixing the output of flip-flops holding a binary number in an array of crystal rectifiers or resistors, it permits selection of one or a group of output lines. 1952RCA Rev. June 185 The selected core will be magnetized in the desired direction while all other cores in the matrix will remain unaffected. The read-out is obtained by applying read-in current pulses. 1955R. K. Richards Arithmetic Operations in Digital Computers iii. 75 In other applications the matrix is used to ‘gate’ an external signal (such as a series of pulses) onto one of a multiplicity of signal lines. 1969P. B. Jordain Condensed Computer Encycl. 315 Such a diode matrix will encode decimal into binary. 1970O. Dopping Computers & Data Processing x. 136 Cores are usually built together to form square or possibly rectangular matrices in which each matrix contains as many cores as there are words in the memory bank. Most matrices nowadays contain (64 × 64 = ) 4,096 cores.
e. Television and Broadcasting. A circuit designed to accept a number of inputs and produce outputs that are linear combinations of them in different proportions. Freq. attrib.
1953Proc. IRE XLI. 842/1 We show the pickup system giving information in the form of three channel voltages... All three of these voltages are fed to the inputs of three separate matrix or mixing units. 1954Ibid. XLII. 201 (heading) Matrix networks for color TV. Ibid. 201/2 In a 3-tube video matrix with RL and rb equal to 5000 ohms, the gain per tube will be one third of the gain of a one-tube amplifier. 1961Carnt & Townsend Colour Television vii. 185 The matrix circuits, in effect, solve the three equations R′ = Y′ + 0·96 I′ + 0·62 Q′, G′ = Y′ - 0·27 I′ - 0·65 Q′, B′ = Y′ - 1·11 I′ + 1·70 Q′, and derive their name from the matrix notation used in algebra as a form of shorthand for writing and solving such equations. 1970Jrnl. Audio Engin. Soc. XVIII. 627/1 (caption) One form of resistive matrix employed in four-channel stereo receiver or adapter to provide electrical separation of front and rear signals in left and rear stereo channels if transmission matrix of Fig. 4 is utilized at FM broadcast transmitter. 1971D. J. Seal Mazda Bk. Pal Receiver Servicing i. 7 Two colour difference signals (R-Y and B-Y) are fed from the decoder to the matrix, where they are combined with the luminance signal (Y) to form the three primary colour signals red, green and blue. 1973Sat. Rev. Arts (U.S.) 1 Apr. 49/2 Matrix system, the quadraphonic disc system in which four signals are fed into a circuit (matrix) that mixes (encodes) them into two signals that are inscribed on the walls of a record groove... If the disc is played on a properly equipped quad system, the signals are fed into a complementary matrix, which restores (decodes) them back to the original four, and the disc is heard quadraphonically.
7. attrib. and Comb., as matrix-maker, † matrix-suffocation; matrix algebra; matrix tin, matrix vase; matrix-encircled adj.; matrix mechanics Physics, a form of quantum mechanics developed by W. Heisenberg in which the operators corresponding to physical co-ordinates (position, momenta, etc.) are represented by matrices with time-dependent elements; matrix number, a number assigned by a record company to a matrix in the manufacture of gramophone records; matrix printer, a printer in which each printed character is made up of dots printed by the tips of small wires selected out of a rectangular array; matrix sentence Linguistics (see quot. 19671).
1930Ruark & Urey Atoms, Molecules & Quanta xvii. 577 (heading) The laws of *matrix algebra. 1969D. C. Hague Managerial Econ. i. 24 With complex decision problems..calculus and matrix algebra may have to be used.
1890‘R. Boldrewood’ Miner's Right (1899) 177/2 Many a quaint fragment, or *matrix-encircled nugget,..was transferred..on that auspicious day.
1656Earl of Monmouth tr. Boccalini's Advts. fr. Parnass. 101 This Serjeant was son to a *Matrix-maker.
1926P. A. M. Dirac in Proc. R. Soc. A. CXII. 666 In Heisenberg's *matrix mechanics it is assumed that the elements of the matrices that represent the dynamical variables determine the frequencies and intensities of the components of the radiation emitted. 1966McGraw-Hill Encycl. Sci. & Technol. VIII. 181/2 Matrix mechanics is disadvantageous for obtaining quantitative solutions to actual problems; because it is concisely expressed in a form independent of special coordinate systems, however, matrix mechanics is advantageous for proving general theorems. 1974G. Reece tr. Hund's Hist. Quantum Theory xiii. 171 First Heisenberg showed in the language of matrix mechanics that two identical coupled systems always behaved like the two oscillators.
1965G. Melly Owning-Up xi. 129 He was a record collector who knew the *matrix number..of every record in his immaculately filed collection. 1968Leadbitter & Slaven Blues Records 1943–66 7 All matrix numbers where known are given for completeness sake, even though they may only be the issue number with A or B suffixes or numbers allocated by pressing plants.
1958Gotlieb & Hume High-Speed Data Processing iii. 59 IBM has *matrix printers for use with the 702 and 705 data processors. 1964T. W. McRae Impact of Computers on Accounting i. 17 The ‘matrix’ printer and the ‘chain’ printer can reach speeds of up to 1200 lines a minute.
1964*Matrix sentence [see constituent B. 5]. 1967D. Steible Conc. Handbk. Ling. 77 Matrix sentence, in transformational grammar, a basic sentence, known in traditional grammar as an independent clause, into which other structures may be embedded. 1967Word XXIII. 338 The ultimate fate of an included-sentence construction, of course, is to become so thoroughly embedded in the matrix sentence as to be no longer distinguishable. 1968Canad. Jrnl. Ling. XIII. 83 Infinitive phrases have a wide range of function within the matrix sentence. 1972Hartmann & Stork Dict. Lang. & Ling. 138 Matrix sentences often coincide with what is known in traditional grammar as main clauses.
1598Sylvester Du Bartas ii. i. iii. Furies 566 Such are the fruitfull *Matrix-suffocation, The Falling-sickness, and pale Swouning-passion.
1873C. Robinson N.S. Wales 57 Irrespective of vein or *matrix tin.
1857Birch Anc. Pottery (1858) II. 353 This *matrix vase was made of a very fine bright red clay.
b. Applied to precious stones (see quot. 1909).
1909Cent. Dict. Suppl., Matrix-gem, an opal, turquoise, ruby, or other gem intimately mixed with the matrix material and cut with it. 1921Brit. Mus. Return 157 in Parl. Papers XXVII. 651 A suite of specimens of sapphire..comprising two matrix specimens.
Add:[3.] c. Manuf. A fine material used to bind together the coarser particles of a composite (usu. artificial) substance; spec. in Building, lime or fine cement.
1838[see pebble-stone n. a]. 1879H. Reid Pract. Treat. Manuf. Concrete (new ed.) i. 5 A concrete mass in the constructive sense means the binding together of variously selected aggregates by a cementatious matrix. 1910Encycl. Brit. VI. 835/1 The matrix is the lime or cement, whose chemical action with the added water causes the concrete to solidify... The matrix most commonly used is Portland cement. 1947J. C. Rich Materials & Methods of Sculpture xi. 323 White Portland cement is recommended as matrix for a colored concrete, because by its use a maximum coloring effect can be gained. 1984E. P. DeGarmo et al. Materials & Processes in Manuf. (ed. 6) v. 123 The microstructure consists of three-dimensional graphite flakes dispersed in a matrix of ferrite.
[6.] [a.] Substitute for def.: A rectangular array of symbols or mathematical expressions arranged in rows and columns with one symbol or expression occupying each position on a rectangular grid, considered as a single entity and now usually written with enclosing round brackets. Also transf., any similar arrangement or tabulation of words, data, etc. (Earlier and later examples.)
1850J. J. Sylvester in Phil. Mag. XXXVII. 369 We..commence..with an oblong arrangement of terms consisting, suppose, of m lines and n columns. This will not in itself represent a determinant, but is, as it were, a Matrix out of which we may form various systems of determinants by fixing upon a number p, and selecting at will p lines and p columns, the squares corresponding to which may be termed determinants of the pth order. 1945E. T. Bell Devel. Math. (ed. 2) ix. 205 The elements of the theory of matrices are now included in the usual college course in algebra. Ibid., The invention of matrices illustrates once more the power and suggestiveness of a well-devised notation. 1960IRE Trans. Med. Electronics VII. 280/2 Let us start with a large matrix filled with 1's and 0's, depending upon whether a particular case does or does not have a particular symptom. 1964Gould & Kolb Dict. Social Sci. 452/2 The economy is divided into a number of sectors or industries, sometimes several hundred, and..tables or matrices are constructed which show the goods-and-services inputs and outputs of each. 1990Accountancy Mar. 45/2 The Bank of England has reviewed the matrix banks use to judge the adequacy of their provisions against exposure to countries experiencing debt repayment problems.
f. spec. in Management. An organizational structure in which two or more lines of command, responsibility, or communication may run through the same individual; spec. one in which project teams are formed of staff drawn from separate departments or functions within the organization. Usu. attrib., esp. as matrix management, matrix organization, by which a co-ordinated structure of this nature across a business, etc. supplements the traditional hierarchical model. Contr. with line n.2 19 d.
1959J. Marschak in M. Haire Mod. Organization Theory xi. 308 (caption) A matrix of actions, observations, and internal communications. 1964Business Horizons Summer 72/2 The concept of a matrix organization entails an organizational system designed as a ‘web of relationships’ rather than a line and staff relationship of work performance. 1975Times Higher Educ. Suppl. 26 Sept. 9/1 Matrix management is a relatively new approach to modifying and supplementing the conventional hierarchical type of industrial organization, which is based on a pyramid of superior-subordinate authority relationships. 1984D. G. Bew in C. A. Heaton Introd. Industr. Chem. iii. 77 The development of some form of matrix organization is usual to ensure coverage of all the planned activities with minimum overlap.
g. Computing. A rectangular array of potential image points. Chiefly in dot matrix s.v. dot n.1 8, matrix printer in sense 7 below.
1958, etc. [see matrix printer, sense 7 below]. 1985Which Computer? Apr. 35/2 The screen matrix is 255 by 512 pixels.
▪ II. matrix, v.|ˈmeɪtrɪks|
[f. prec. n. (Orig. formed as the vbl. n.)]
trans. To combine (signals) in different proportions so as to obtain one or more linear combinations of them.
1969Carnt & Townsend Colour Television II. iii. 106 Matrixing R–Y and B–Y produces G–Y. 1971D. J. Seal Mazda Bk. Pal Receiver Servicing i. 7 The decoder accepts the PAL chrominance signal.., demodulates it and produces two colour difference signals to be matrixed and amplified by the colour difference amplifiers. 1972H. F. Olson Mod. Sound Reproduction ix. 188 The four inputs LF, LR, RF, and RR, representing the left front, left rear, right front, and right rear respectively, are matrixed and encoded to the left, L, and right, R, channels of the conventional two-channel stereophonic recording system. Each of the two channels R and L contains a mixture of the four channels in such a manner that the four channels can be reconstituted in reproduction by means of the decoder and matrix. 1972Gramophone Jan. 1412/1 The extra channels of information intended for feeding to the back loudspeakers are simply mixed (or matrixed) with the front channel signals prior to the cutting of the disc.
So ˈmatrixed ppl. a., ˈmatrixing vbl. n.
1951Proc. IRE XXXIX. 1158/2 All that is required is the addition (or subtraction..) of fractions of the camera currents to derive the currents required to control the receiver. [Note] This operation has been called ‘matrixing’ in some discussions. The analogy to the matrix operation, which is used in vector algebra to change from one system of co-ordinates to a second, is obvious. 1955J. W. Wentworth Color Television Engin. iv. 125 Matrixing can be used to improve color fidelity only when camera signals are produced by linear devices; if the camera signals are nonlinear functions of red, green, and blue, the linear equations of the matrix process cannot be worked out properly unless the matrix circuit is preceded by linearity correctors. 1971D. J. Seal Mazda Bk. Pal Receiver Servicing v. 89 Since the luminance signal (-Y) is applied to all three cathodes, the tube performs the final matrixing, and the three gun currents are proportional to the original red, green and blue separation signals from the colour cameras. 1972H. F. Olson Mod. Sound Reproduction ix. 189 The performance, as exemplified by..spatial effects, of a two-channel-to-four-channel coded and matrixed system is inferior to that of four discrete channels. 1972Observer (Colour Suppl.) 22 Oct. 54/4 Not all the matrix systems are compatible with each other, though a machine like the Pioneer QX-8000 is capable of dealing with all forms of matrixed four-channel. |
