* Discrete Fourier transform

See Discrete Fourier transform for much more information, including:

* Spectrum shifting in signal processing, see Discrete Fourier transform # The shift theorem

* Discrete cosine transform, a mathematical transform related to the Fourier transform

** Fourier transform: Continuous Fourier transform & Discrete Fourier transform

* Fast Fourier transform ( FFT ), a fast algorithm for computing a Discrete Fourier transform

* Discrete Hartley transform, a Fourier-related transform of discrete, periodic data similar to the discrete Fourier transform

* C. M. Rader, " Discrete Fourier transforms when the number of data samples is prime ," Proc.

* S. Winograd, " On Computing the Discrete Fourier Transform ", Proc.

* S. Winograd, " On Computing the Discrete Fourier Transform ", Mathematics of Computation, 32 ( 141 ), 175 – 199 ( 1978 ).

* R. Tolimieri, M. An, and C. Lu, " Algorithms for Discrete Fourier Transform and Convolution ," Springer-Verlag, 2nd ed., 1997.

* Discrete Fourier transform

* fftpack: Discrete Fourier Transform algorithms

Discrete Fourier transform –

Let be the Discrete Fourier Transform ( DFT ) matrix, then

* Number theoretic transform, a mathematical transform similar to the Discrete Fourier transform

* Prime Factor Algorithm, a fast algorithm for computing the Discrete Fourier transform

# REDIRECT Discrete Fourier transform

# REDIRECT Discrete Fourier transform ( general )# Number-theoretic transform

* Discrete sine transform

In particular, a Fourier-related transform such as the Discrete Cosine Transform ( DCT ) is widely used:.

A widely used transform in this regard is the Discrete Cosine Transform ( DCT ), developed by in 1974 by N. Ahmed, T. Natarajan and K. R. Rao ; see Reference 1 in discrete cosine transform.

# REDIRECT Discrete cosine transform

# REDIRECT Discrete cosine transform

# REDIRECT Discrete cosine transform

* R. N. Bracewell, " Discrete Hartley transform ," J. Opt.

* Discrete cosine transform, a Fourier-related transform similar to the discrete Fourier transform ( DFT ), but using only real numbers.

Discrete symmetry groups come in three types: ( 1 ) finite point groups, which include only rotations, reflections, inversion and rotoinversion-they are in fact just the finite subgroups of O ( n ), ( 2 ) infinite lattice groups, which include only translations, and ( 3 ) infinite space groups which combines elements of both previous types, and may also include extra transformations like screw axis and glide reflection.

Discrete Applied Mathematics 117 ( 2002 ), 81-86.

Discrete Optimization 1 ( 2004 ), 121-127.

Combinatorial Problems, Discrete Optimization 3 ( 2006 ), 288-298.

* Discrete structural analysis: whereas neoclassical theory uses continuous marginal modes of analysis in order to achieve second-order economizing ( adjusting margins ), TCE analyzes the basic structures of the firm and its governance in order to achieve first-order economizing ( improving the basic governance structure ).

) Discrete variables referring to more than two possible choices are typically coded using dummy variables ( or indicator variables ), i. e. separate explanatory variables taking the value 0 or 1 are created for each possible value of the discrete variable, with a 1 meaning " variable does have the given value " and a 0 meaning " variable does not have the given value ".

In Proceedings of the 20th Annual ACM-SIAM Symposium On Discrete Mathematics ( SODA ), New York, 2009.

Discrete Multi-Tone ( DMT ), the most widely used modulation method, separates the ADSL signal into 255 carriers ( bins ) centred on multiples of 4. 3125 kHz.

The first titles to appear were Williams ' Collected Poems 1921 – 31 ( 1934 ), with an introduction by Wallace Stevens, Oppen's Discrete Series, followed by Reznikoff's Jerusalem the Golden, ( 1934, poetry ), his Testimony, ( 1934, prose ), with an introduction by Kenneth Burke and his In Memoriam: 1933 ( 1934, poetry ).

* Discrete Universal Denoiser ( DUDE ), a denoising scheme in information theory and signal processing

* Risk Neutral Pricing in Discrete Time ( PDF ), Prof. Don M. Chance

His books include 3D Imaging in Medicine ( CRC, 1991 and 2000 ), Geometry of Digital Spaces ( Birkhauser, 1998 ), Discrete Tomography: Foundations, Algorithms and Applications ( Birkhauser, 1999 ), Advances in Discrete Tomography and Its Applications ( Birkhauser, 2007 ), and Fundamentals of Computerized Tomography: Image Reconstruction from Projections ( Springer, 2009 ).

In 1971, JVC introduced the first discrete system for four channel quadraphonic sound on vinyl records-CD-4 ( Compatible Discrete Four Channel ) or Quadradisc, as it was called by the Radio Corporation of America ( RCA ) in the United States.

called Discrete Series, a book-length poem sequence.

Discrete systems may be contrasted with continuous systems, which may also be called analog systems.

Discrete mathematics, also called finite mathematics, is the study of mathematical structures that are fundamentally discrete, in the sense of not supporting or requiring the notion of continuity.

Discrete symmetries sometimes involve some type of ' swapping ', these swaps usually being called reflections or interchanges.

Approximations of the Laplacian, obtained by the finite difference method or by the finite element method can also be called Discrete Laplacians.

Discrete symmetries sometimes involve some type of ' swapping ', these swaps usually being called reflections or interchanges.