The compact disc (CD) is a digital optical disc data storage format that was co-developed by Philips and Sony to store and play digital audio recordings. It uses the Compact Disc Digital Audio format which typically provides 74 minutes of audio on a disc. In later years, the compact disc was adapted for non-audio computer data storage purposes as CD-ROM and its derivatives. First released in Japan in October 1982, the CD was the second optical disc technology to be invented, after the much larger LaserDisc (LD). By 2007, 200 billion CDs had been sold worldwide.
Super Audio CD (SACD) is an optical disc format for audio storage introduced in 1999. It was developed jointly by Sony and Philips Electronics and intended to be the successor to the compact disc (CD) format.
An audiophile is a person who is enthusiastic about high-fidelity sound reproduction. The audiophile seeks to achieve high sound quality in the audio reproduction of recorded music, typically in a quiet listening space in a room with good acoustics.
Sound can be recorded and stored and played using either digital or analog techniques. Both techniques introduce errors and distortions in the sound, and these methods can be systematically compared. Musicians and listeners have argued over the superiority of digital versus analog sound recordings. Arguments for analog systems include the absence of fundamental error mechanisms which are present in digital audio systems, including aliasing and associated anti-aliasing filter implementation, jitter and quantization noise. Advocates of digital point to the high levels of performance possible with digital audio, including excellent linearity in the audible band and low levels of noise and distortion.
Direct Stream Digital (DSD) is a trademark used by Sony and Philips for their system for digitally encoding audio signals for the Super Audio CD (SACD).
In digital recording, an audio or video signal is converted into a stream of discrete numbers representing the changes over time in air pressure for audio, or chroma and luminance values for video. This number stream is saved to a storage device. To play back a digital recording, the numbers are retrieved and converted back into their original analog audio or video forms so that they can be heard or seen.
The DualDisc is a type of double-sided optical disc product developed by a group of record companies including MJJ Productions Inc., EMI Music, Universal Music Group, Sony BMG Music Entertainment, Warner Music Group, and 5.1 Entertainment Group and later under the aegis of the Recording Industry Association of America (RIAA). It featured an audio layer intended to be compatible with CD players on one side and a standard DVD layer on the other. In this respect it was similar to, but distinct from, the DVDplus developed in Europe by Dieter Dierks and covered by European patents.
Kornelis Antonie "Kees" Schouhamer Immink is a Dutch engineer, inventor, and entrepreneur, who pioneered and advanced the era of digital audio, video, and data recording, including popular digital media such as compact disc (CD), DVD and Blu-ray disc. He has been a prolific and influential engineer, who holds more than 1100 U.S. and international patents. A large portion of the commonly used audio and video playback and recording devices use technologies based on his work. His contributions to coding systems assisted the digital video and audio revolution, by enabling reliable data storage at information densities previously unattainable.
The SPARS code is a three-position alphabetic classification system developed in the early 1980s by the Society of Professional Audio Recording Services (SPARS) for commercial compact disc releases to denote aspects of the sound recording and reproduction process, distinguishing between the use of analog equipment and digital equipment. The code's three positions refer to recording, mixing, and mastering respectively. The first two positions may be coded either "A" for analog or "D" for digital; the third position (mastering) is always "D" on digital CDs. The scheme was not originally intended to be limited to use on digital packaged media: it was also available for use in conjunction with analog releases such as vinyl or cassette, but this was seldom done in practice.
Sound 80 is a recording studio in Minneapolis, Minnesota, United States founded by engineer Tom Jung and composer/musician Herb Pilhofer in 1969. Largely involved with local artists, the studio is best known for recording portions of Bob Dylan's Blood on the Tracks in 1974 and Cat Stevens' Izitso in 1977, as well as demo tapes for Prince's first album For You in 1977.
Flim & the BB's was a contemporary jazz band that was among the first bands to record albums digitally.
Genesis 1976–1982 is a box set of five studio albums by Genesis. It was released on 2 April 2007 in Europe & Japan by Virgin/EMI and on 15 May 2007 in North America by Atlantic/Rhino. The 6-CD/6-DVD box set includes newly remixed versions of the albums A Trick of the Tail, Wind & Wuthering, ...And Then There Were Three..., Duke, and Abacab. The sixth pair of discs includes B-side songs.
Digital eXtreme Definition (DXD) is a digital audio format that originally was developed by Philips and Merging Technologies for editing high-resolution recordings recorded in Direct Stream Digital (DSD), the audio standard used on Super Audio CD (SACD). As the 1-bit DSD format used on SACD is not suitable for editing, alternative formats such as DXD or DSD-Wide must be used during the mastering stage.
Genesis 1970–1975 is a box set of five studio albums by Genesis featuring Peter Gabriel. It was released on 10 November 2008 in Europe by EMI and on 11 November 2008 in North America by Atlantic/Rhino. The 7-CD/6-DVD box set includes newly remixed versions of the albums Trespass, Nursery Cryme, Foxtrot, Selling England by the Pound and The Lamb Lies Down on Broadway. The band's 1969 debut album, From Genesis to Revelation, was excluded due to the rights to the album belonging to Jonathan King. The fifth pair of discs includes B-side songs, 3 rare songs from BBC Sessions in 1970 and the never-before-released Genesis Plays Jackson soundtrack. Each bonus DVD features audio versions of the albums in 5.1 surround sound, as well as videos from each album's corresponding tour, new interviews, and photo galleries. The European version includes CD/SACD Hybrids instead of standard CDs. EMI also released a limited edition six disc vinyl box set containing the original albums only on 24 November 2008.
Sonic Studio is an American company manufacturing digital audio production tools for engineering professionals. The company was created when Sonic Solutions divested itself of its audio product lines in order to concentrate on DVD and multimedia–oriented products.
Super Bit Mapping (SBM) is a noise shaping process, developed by Sony for CD mastering.
The Warner Premium Sound series is series of 2011 hybrid multichannel-stereo Super Audio CD/CD releases, which an important development in the format war between Super Audio CDs (SACDs) and DVD-Audio discs. It marks the first time that the Warner Music Group has released titles in the SACD format; previously they had endorsed the DVD-Audio format. In a parallel development in the United States, four albums by the Doors, titles strongly associated with the Warner Music Group, are also to be released on hybrid multichannel-stereo SACDs by Analogue Productions. Also Mobile Fidelity have been issuing and continue to be issuing SACDs of the Warner catalogue, but in the past these have been stereo-only discs, and for their new releases they do not specify whether a given disc might have multichannel contents also.
High-resolution audio is a term for audio files with greater than 44.1 kHz sample rate or higher than 16-bit audio bit depth. It commonly refers to 96 or 192 kHz sample rates. However, 44.1 kHz/24-bit, 48 kHz/24-bit and 88.2 kHz/24-bit recordings also exist that are labeled HD Audio.
