*. dct A proprietary audio file format for digital dictation

* Clinton B. Ford ( 1913 – 1992 ), who specialized in the observation of variable stars.

The composition of resins is highly variable ; each species produces a unique blend of chemicals which can be identified by the use of pyrolysis – gas chromatography – mass spectrometry.

The traditional test for the presence of first-order autocorrelation is the Durbin – Watson statistic or, if the explanatory variables include a lagged dependent variable, Durbin's h statistic.

A more flexible test, covering autocorrelation of higher orders and applicable whether or not the regressors include lags of the dependent variable, is the Breusch – Godfrey test.

At the same time annual inflation in the economy was variable and during the last five years ( 2003 – 2007 ) has seen a low of 2. 3 % and high of 7. 3 %.

Historical " bronzes " are highly variable in composition, as most metalworkers probably used whatever scrap was on hand ; the metal of the 12th century English Gloucester Candlestick is bronze containing a mixture of copper, zinc, tin, lead, nickel, iron, antimony, arsenic with an unusually large amount of silver – between 22. 5 % in the base and 5. 76 % in the pan below the candle.

In this form, the Cauchy – Riemann equations can be interpreted as the statement that f is independent of the variable.

* Gravitational redshift does not assume the Schwarzschild metric solution to Einstein's field equation – in which the variable cannot represent the mass of any rotating or charged body.

In mathematics, an elementary function is a function of one variable built from a finite number of exponentials, logarithms, constants, and nth roots through composition and combinations using the four elementary operations (+ – × ÷).

Energy audits of existing buildings demonstrate that the lighting component of residential, commercial and industrial uses consumes about 20 – 40 % of those land uses, variable with region and land use.

If the generalized coordinates are represented as a vector and time differentiation is represented by a dot over the variable, then the equations of motion ( known as the Lagrange or Euler – Lagrange equations ) are a set of equations:

At Earth's orbit its typical density is 6 ions / cm < SUP > 3 </ SUP > ( variable, as is the velocity ), and it contains a variable interplanetary magnetic field ( IMF ) of ( typically ) 2 – 5 nT.

MPVs may have seats, either benches or individual seats, that are designed to be relocated, removed, folded partially ( on-floor ) or folded completely under-floor – allowing variable seating capacity and cargo room.

The variable temporary population of 4 – 20 " non-occupants " are staff and scientists employed by various departments of the US government and The Nature Conservancy, as well as a rotating mix of Palmyra Atoll Research Consortium scholars pursuing research.

The Riemann zeta function or Euler – Riemann zeta function, ζ ( s ), is a function of a complex variable s that analytically continues the sum of the infinite series which converges when the real part of s is greater than 1.

Techniques from the theory of analytic functions of a complex variable are often used in real analysis – such as evaluation of real integrals by residue calculus.

where N < sub > i </ sub > is the number of molecules of i, and ξ is the progress variable or extent of reaction ( Prigogine & Defay, p. 18 ; Prigogine, pp. 4 – 7 ; Guggenheim, p. 37 & 62 ).

The De Bruijn – Newman constant, denoted by Λ and named after Nicolaas Govert de Bruijn and Charles M. Newman, is a mathematical constant defined via the zeros of a certain function H ( λ, z ), where λ is a real parameter and z is a complex variable.

16 mm sound movie – showing a variable width sound track on single perforation film stock

* API 1149 – Pipeline variable uncertainties & their effects on leak detectability

De Broglie – Bohm theory is often referred to as a " hidden variable " theory.

Pelizaeus – Merzbacher disease ( PMD ) is a rare central nervous system disorder in which coordination, motor abilities, and intellectual function are delayed to variable extents.

* flac – File format for the Free Lossless Audio Codec, a lossless compression codec.

* mpc-Musepack or MPC ( formerly known as MPEGplus, MPEG + or MP +) is an open source lossy audio codec, specifically optimized for transparent compression of stereo audio at bitrates of 160 – 180 kbit / s.

* vox – the vox format most commonly uses the Dialogic ADPCM ( Adaptive Differential Pulse Code Modulation ) codec.

A codec ( the program ) should not be confused with a coding or compression format or standard – a format is a document ( the standard ), a way of storing data, while a codec is a program ( an implementation ) which can read or write such files.

In conjunction with an appropriate codec using MPEG or various manufacturers proprietary algorithms, an ISDN BRI can be used to send stereo bi-directional audio coded at 128 kbit / s with 20 Hz – 20 kHz audio bandwidth, although commonly the G. 722 algorithm is used with a single 64 kbit / s B channel to send much lower latency mono audio at the expense of audio quality.

; Part 2: Video – compression codec for interlaced and non-interlaced video signals ( Also known as ITU-T Rec.

; Part 3: Audio – compression codec for perceptual coding of audio signals.

* Windows Media Video – A video file format and codec developed by Microsoft

* JPEG XR / HD Photo – An image file format and codec developed by Microsoft

* WMV HD – The marketing name for high definition videos encoded using the Windows Media Video 9 codec

* FFmpeg – A third-party, cross-platform, free software codec library which implements Windows Media Video codecs

Xvid is not a video format – it is a program ( codec ) for compressing and decompressing to the MPEG-4 ASP format.

Musepack or MPC is an open source lossy audio codec, specifically optimized for transparent compression of stereo audio at bitrates of 160 – 180 ( manual set allows bitrates up to 320 ) kbit / s.

G. 722 is the original 7 kHz codec, using ADPCM and operating at 48 – 64 kbit / s.

Extended Adaptive Multi-Rate – Wideband ( AMR-WB +) is an audio codec that extends AMR-WB.

The AMR-WB + codec has a wide bit-rate range, from 5. 2 – 48 kbit / s.

* LAME – free software codec used to encode / compress. mp3 audio

It occurs in transform-based audio compression algorithms – typically based on the modified discrete cosine transform ( MDCT ) – such as MP3, MPEG-4 AAC, and Vorbis, and is due to quantization noise being spread over the entire transform-window of the codec.