Delta-sigma modulation

Delta-sigma (ΔΣ; or sigma-delta, ΣΔ) modulation is a method for encoding analog signals into digital signals as found in an ADC. It is also used to transfer high bit-count low frequency digital signals into lower bit-count higher frequency digital signals as part of the process to convert digital signals into analog.

In a conventional ADC, an analog signal is integrated, or sampled, with a sampling frequency and subsequently quantized in a multi-level quantizer into a digital signal. This process introduces quantization error noise. The first step in a delta-sigma modulation is delta modulation. In delta modulation the change in the signal (its delta) is encoded, rather than the absolute value. The result is a stream of pulses, as opposed to a stream of numbers as is the case with PCM. In delta-sigma modulation, the accuracy of the modulation is improved by passing the digital output through a 1-bit DAC and adding (sigma) the resulting analog signal to the input signal, thereby reducing the error introduced by the delta-modulation.

Modulation

In electronics and telecommunications, modulation is the process of varying one or more properties of a periodic waveform, called the carrier signal, with a modulating signal that typically contains information to be transmitted.

In telecommunications, modulation is the process of conveying a message signal, for example a digital bit stream or an analog audio signal, inside another signal that can be physically transmitted. Modulation of a sine waveform transforms a baseband message signal into a passband signal.

A modulator is a device that performs modulation. A demodulator (sometimes detector or demod) is a device that performs demodulation, the inverse of modulation. A modem (from modulator–demodulator) can perform both operations.

The aim of analog modulation is to transfer an analog baseband (or lowpass) signal, for example an audio signal or TV signal, over an analog bandpass channel at a different frequency, for example over a limited radio frequency band or a cable TV network channel.

Modulator (EP)

Modulator is an EP of electronic music by Information Society. It was released on September 22, 2009.

Track listing

External links

Mash

Mash, MASH, or M*A*S*H may refer to:

Military

Entertainment

People

Technology

M*A*S*H (TV series)

M*A*S*H is an American television series developed by Larry Gelbart, adapted from the 1970 feature film MASH (which was itself based on the 1968 novel MASH: A Novel About Three Army Doctors, by Richard Hooker). The series, which was produced in association with 20th Century Fox Television for CBS, follows a team of doctors and support staff stationed at the "4077th Mobile Army Surgical Hospital" in Uijeongbu, South Korea during the Korean War. The show's title sequence features an instrumental version of "Suicide Is Painless", the theme song from the original film. The show was created after an attempt to film the original book's sequel, M*A*S*H Goes to Maine, failed. The television series is the most well-known version of the M*A*S*H works, and one of the highest-rated shows in U.S. television history.

The series premiered in the U.S. on September 17, 1972, and ended February 28, 1983, with the finale, "Goodbye, Farewell and Amen", becoming the most-watched and highest-rated single television episode in U.S. television history at the time, with a record-breaking 125 million viewers (60.2 rating and 77 share), according to the New York Times. It had struggled in its first season and was at risk of being cancelled. Season two of M*A*S*H placed it in a better time slot (airing after the popular All in the Family); the show became one of the top 10 programs of the year and stayed in the top 20 programs for the rest of its run. It is still broadcast in syndication on various television stations. The series, which depicted events occurring during a three-year military conflict, spanned 256 episodes and lasted 11 seasons.

Mash (restaurant chain)

MASH ("Modern American Steak House") is a chain of high-end steakhouses based out of Copenhagen, Denmark.

History

The first Mash steakhouse opened on Bredgade in Copenhagen in 2009. In 2012, a Mash restaurant opened in a building owned by Crown Estates on Brewer Street in London's Soho neighbourhood. In April 2013, The Telegraph commented that the team behind Mash had "set the London steakhouse scene on fire" with their restaurant which won the award for Restaurant of the Year at the 2013 London Lifestyle Awards. The first Mash restaurant in Germany is expected to open on Grosser Elbstrasse in Hamburg in August 2015.

Ownership

Mash is owned by Copenhagen Concepts which also runs the restaurants Le Sommelier and Umami. Jesper Boelskifte is CEO of the company. The group of owners also include Peter Trauboth, Mikkel Glahn, Erik Gemal and the chef Francis Cardenau.

Restaurants

MSenmark