DCT

DCT may refer to:

Biology

Computing and technology

Entertainment

Mathematics

Warships

Dct (File Format)

Introduction

A proprietary variable codec audio file format designed for dictation by NCH Software. It has dictation header information and can be encrypted (often required by medical confidentiality laws). A free dct player, Express Scribe Transcription is provided.

List of codecs supported in dct files.

Comments

The above are wave files - even if they have the mp3 codec they will have the ".wav" or ".dct" extension.

Discrete cosine transform

A discrete cosine transform (DCT) expresses a finite sequence of data points in terms of a sum of cosine functions oscillating at different frequencies. DCTs are important to numerous applications in science and engineering, from lossy compression of audio (e.g. MP3) and images (e.g. JPEG) (where small high-frequency components can be discarded), to spectral methods for the numerical solution of partial differential equations. The use of cosine rather than sine functions is critical for compression, since it turns out (as described below) that fewer cosine functions are needed to approximate a typical signal, whereas for differential equations the cosines express a particular choice of boundary conditions.

In particular, a DCT is a Fourier-related transform similar to the discrete Fourier transform (DFT), but using only real numbers. DCTs are equivalent to DFTs of roughly twice the length, operating on real data with even symmetry (since the Fourier transform of a real and even function is real and even), where in some variants the input and/or output data are shifted by half a sample. There are eight standard DCT variants, of which four are common.

Cave

A cave or cavern is a hollow place in the ground, especially a natural underground space large enough for a human to enter. Caves form naturally by the weathering of rock and often extend deep underground. The word cave can also refer to much smaller openings such as sea caves, rock shelters, and grottos.

Speleology is the science of exploration and study of all aspects of caves and the cave environment. Visiting or exploring caves for recreation may be called caving, potholing, or spelunking.

Types and formation

The formation and development of caves is known as speleogenesis. Caves are formed by various geologic processes and can be variable sizes. These may involve a combination of chemical processes, erosion from water, tectonic forces, microorganisms, pressure, and atmospheric influences.

It is estimated that the maximum depth of a cave cannot be more than 3,000 metres (9,800 ft) due to the pressure of overlying rocks. For karst caves the maximum depth is determined on the basis of the lower limit of karst forming processes, coinciding with the base of the soluble carbonate rocks.

Caves (beer)

Caves is a dark Belgian beer, available around the cities of Lier and Ghent.

Caves has a long history of success and decline. From the 16th century onwards, it was brewed by several breweries around the city of Lier, but when the last brewery Cuykens disappeared in 1967 it seemed that this was also the end of the beer tradition of Caves.

However, in 1976 the cultural organization 'De Heren van Lier' decided to start brewing the beer again.

Caves is a beer of high fermentation, based on grain, malt and hops. No conservatives or sugars are used during the brewing process.

Elitist (band)

Elitist was an American Hardcore progressive metalcore band from Los Angeles, California signed to Equal Vision Records. They recorded three EPs and two full-length albums, the final release being a self-titled album Elitist released June 29, 2015. On September 7, 2015 the band announced their breakup after members decided to pursue other creative ventures.

History

Formation and Caves (2010-2011)

Elitist was founded in April 2010 by guitarist Julian Rodriguez and Jacob Katz, both former members of a previous project called Another Day In Vain. They recorded a demo titled "Principles" which led them to recruit bassist Mike Danese, drummer Robert Platz and second guitarist Sean Hall (also a member of another pre-Elitist project called The Fortune Teller). They recorded and released a five song EP "Caves".

Earth (2011)

In early 2011 vocalist Jacob Katz left the band and was replaced by Alex Kolominsk (Now singer of Subverse out of Orange County, CA). The band signed to Blkheart Group, an independent label and management group, and recorded their second EP "Earth".