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Master Quality Authenticated
Master Quality Authenticated (MQA) is a lossy audio compression format, which is used to transfer high-quality audio to a smartphone or audio device. The tech was launched in 2014 by Meridian Audio, and is now owned and licensed by MQA Ltd. MQA is a proprietary system and requires licensing fees to use. History The press launch of MQA was held in December 2014 in London, followed by the company hosting a demonstration room at the Consumer Electronics Show in Las Vegas in January 2015. The initial hardware manufacturers which offered MQA decoding were Pioneer, Onkyo, and Mytek. In May 2016, Warner Music Group signed a long-term licensing deal with MQA. The RIAA announced in May 2016 that MPEG-4 SLS and MQA were eligible to use the ''Hi-Res MUSIC'' logo on their products; the latter despite the logo being intended for ''lossless audio'' recordings. By 2017, music distribution companies ''Warner Music Group'', ''Universal Music Group'', ''Sony Music'' and ''Merlin Network'' had a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MQA Logo Stacked Black200
MQA or mqa may refer to: Organisations * Malaysian Qualifications Agency, a statutory body in Malaysia * Mauritius Qualifications Authority, a government organisation Other uses * Maba language (Indonesia) (ISO 639-3 code) * Mandora Station Airport (List of airports by IATA airport code: M, IATA code) * Missouri Quality Award, of Excellence in Missouri Foundation * Marchio di Qualità Ambientale (Environmental Quality Brand), a project in the Parco Nazionale delle Cinque Terre#The MQA Project, Parco Nazionale delle Cinque Terre, Italy * Master Quality Authenticated, an audio codec {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apple Lossless
The Apple Lossless Audio Codec (ALAC), also known as Apple Lossless, or Apple Lossless Encoder (ALE), is an audio coding format, and its reference audio codec implementation, developed by Apple Inc. for lossless data compression of digital music. After initially keeping it proprietary from its inception in 2004, in late 2011 Apple made the codec available open source and royalty-free. Traditionally, Apple has referred to the codec as ''Apple Lossless'', though more recently it has begun to use the abbreviated term ''ALAC'' when referring to the codec. Codec ALAC supports up to 8 channels of audio at 16, 20, 24 and 32 bit depth with a maximum sample rate of 384 kHz. ALAC data is frequently stored within an MP4 container with the filename extension ''.m4a''. This extension is also used by Apple for lossy AAC audio data in an MP4 container (same container, different audio encoding). The codec can also be used by the .CAF file type container, though this is much less common. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atlantic Records
Atlantic Recording Corporation (simply known as Atlantic Records) is an American record label founded in October 1947 by Ahmet Ertegun and Herb Abramson. Over its first 20 years of operation, Atlantic earned a reputation as one of the most important American labels, specializing in jazz, R&B, and soul by Aretha Franklin, Ray Charles, Wilson Pickett, Sam and Dave, Ruth Brown and Otis Redding. Its position was greatly improved by its distribution deal with Stax. In 1967, Atlantic became a wholly owned subsidiary of Warner Bros.-Seven Arts, now the Warner Music Group, and expanded into rock and pop music with releases by Crosby, Stills, Nash & Young, Led Zeppelin, and Yes. In 2004, Atlantic and its sister label Elektra were merged into the Atlantic Records Group. Craig Kallman is the chairman of Atlantic. Ahmet Ertegun served as founding chairman until his death on December 14, 2006, at age 83. History Founding and early history In 1944, brothers Nesuhi and Ahmet Erte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morten Lindberg (sound Engineer)
Morten Lindberg (born 15 August 1970 in Skien, Norway) is a Norwegian sound engineer and music producer, specialising in classical music productions. As a producer and engineer, he held the record for most Grammy nominations without a win, with twenty-eight through 2019, until 2020 when he won his first Grammy. Lindberg started his career in 1992 with his production company Lindberg Lyd, followed by the record label 2L which he created with Wolfgang Plagge and Jorn Simenstad in 2001. The company specialises in high quality recordings of Nordic classical music, often recorded in concert halls, churches, etc. From 2006, the 2L record label has received 28 Grammy nominations, including fifteen (as of 2018) for Mr Lindberg in the Best Surround Sound Album category alone. Proving his dominance in this category, he received three nominations in a field of five at the 58th Grammy Awards in 2016. Lindberg has also been nominated in other categories, such as Best Choral Performance and B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stereophile
''Stereophile'' is a monthly American audiophile magazine which reviews high-end audio equipment, such as loudspeakers and amplifiers, and audio-related news. History Founded in 1962 by J. Gordon Holt. ''Stereophile'' is the highest-circulation hi-fi magazine in the Americas and possibly the world. In 1998, ''Stereophile'' was acquired by Petersen Publishing. Until 2018, ''Stereophile'' was published in New York by The Enthusiast Network, a publisher of special interest magazines. The magazine was formerly based in Santa Fe, New Mexico Santa Fe ( ; , Spanish for 'Holy Faith'; tew, Oghá P'o'oge, Tewa for 'white shell water place'; tiw, Hulp'ó'ona, label=Tiwa language, Northern Tiwa; nv, Yootó, Navajo for 'bead + water place') is the capital of the U.S. state of New Mexico. .... During this period it was published eight times a year. until the August 1987 issue, when it started monthly publication. In March 2018, ''Stereophile'' was purchased, along with related magazine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Absolute Sound
''The Absolute Sound'' (TAS) is an American audiophile magazine which reviews high-end audio equipment, along with recordings and comments on various music-related subjects. History ''The Absolute Sound'' was founded in 1973 by Harry Pearson, who was its editor-in-chief and publisher. In the early years, TAS was a quarterly, digest-sized magazine and accepted no advertisements. During the 1970s and 1980s, TAS (along with Stereophile) was influential in the audiophile industry. Pearson is credited as being the most important figure in the rise of High-End audio. Until the mid- to late 1990s, Pearson owned and directed all rights to TAS. The magazine was published by Pearson Publishing Inc., which also published a sister high-end video review magazine published quarterly called ''The Perfect Vision''. Pearson remained the chairman of its editorial advisory board until 2006 and regularly contributed a feature entitled HP's Workshop until his departure in 2012. The magazine is now ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ADPCM
Adaptive differential pulse-code modulation (ADPCM) is a variant of differential pulse-code modulation (DPCM) that varies the size of the quantization step, to allow further reduction of the required data bandwidth for a given signal-to-noise ratio. Typically, the adaptation to signal statistics in ADPCM consists simply of an adaptive scale factor before quantizing the difference in the DPCM encoder. ADPCM was developed for speech coding by P. Cummiskey, Nikil S. Jayant and James L. Flanagan at Bell Labs in 1973. In telephony In telephony, a standard audio signal for a single phone call is encoded as 8000 analog samples per second, of 8 bits each, giving a 64 kbit/s digital signal known as DS0. The default signal compression encoding on a DS0 is either μ-law (mu-law) PCM (North America and Japan) or A-law PCM (Europe and most of the rest of the world). These are logarithmic compression systems where a 13- or 14-bit linear PCM sample number is mapped into an 8-bit value. This sy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WavPack
WavPack is a free and open-source lossless audio compression format and application implementing the format. It is unique in the way that it supports hybrid audio compression alongside normal compression which is similar to how FLAC works. It also supports compressing a wide variety of lossless formats, including various variants of PCM and also DSD as used in SACDs, together with its support for surround audio. Features WavPack compression can compress (and restore) 8-, 16-, 24-, and 32-bit fixed-point, and 32-bit floating-point PCM audio files in the .WAV file format. It also supports surround sound streams and high sampling rates. Like other lossless compression schemes, the data reduction rate varies with the source, but it is generally between 30% and 70% for typical popular music and somewhat better than that for classical music and other sources with greater dynamic range. Hybrid mode WavPack also incorporates a "hybrid" mode, which still provides the features of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AptX
aptX (''apt'' stands for ''audio processing technology'') is a family of proprietary audio codec An audio codec is a device or computer program capable of encoding or decoding a digital data stream (a codec) that encodes or decodes audio. In software, an audio codec is a computer program implementing an algorithm that compresses and decompres ... compression algorithms owned by Qualcomm, with a heavy emphasis on wireless audio applications. History The original aptX algorithm was developed in the 1980s by Dr. Stephen Smyth as part of his Ph.D. research at Queen's University Belfast School of Electronics, Electrical Engineering and Computer Science; its design is based on time domain Adaptive DPCM, ADPCM principles without psychoacoustic auditory masking techniques. aptX audio coding was first introduced to the commercial market as a semiconductor product, a custom programmed Digital signal processor, DSP integrated circuit with part name APTX100ED, which was initially adopted ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Windows Media Audio
Windows Media Audio (WMA) is a series of audio codecs and their corresponding audio coding formats developed by Microsoft. It is a proprietary technology that forms part of the Windows Media framework. WMA consists of four distinct codecs. The original WMA codec, known simply as ''WMA'', was conceived as a competitor to the popular MP3 and RealAudio codecs. ''WMA Pro'', a newer and more advanced codec, supports multichannel and high resolution audio. A lossless codec, ''WMA Lossless'', compresses audio data without loss of audio fidelity (the regular WMA format is lossy). ''WMA Voice'', targeted at voice content, applies compression using a range of low bit rates. Microsoft has also developed a digital container format called Advanced Systems Format to store audio encoded by WMA. Development history The first WMA codec was based on earlier work by Henrique Malvar and his team which was transferred to the Windows Media team at Microsoft. Malvar was a senior researcher and manager ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Advanced Audio Coding
Advanced Audio Coding (AAC) is an audio coding standard for lossy digital audio compression. Designed to be the successor of the MP3 format, AAC generally achieves higher sound quality than MP3 encoders at the same bit rate. AAC has been standardized by ISO and IEC as part of the MPEG-2 and MPEG-4 specifications.ISO (2006ISO/IEC 13818-7:2006 - Information technology -- Generic coding of moving pictures and associated audio information -- Part 7: Advanced Audio Coding (AAC), Retrieved on 2009-08-06ISO (2006, Retrieved on 2009-08-06 Part of AAC, HE-AAC ("AAC+"), is part of MPEG-4 Audio and is adopted into digital radio standards DAB+ and Digital Radio Mondiale, and mobile television standards DVB-H and ATSC-M/H. AAC supports inclusion of 48 full-bandwidth (up to 96 kHz) audio channels in one stream plus 16 low frequency effects ( LFE, limited to 120 Hz) channels, up to 16 "coupling" or dialog channels, and up to 16 data streams. The quality for stereo is satisf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HDCD
High Definition Compatible Digital (HDCD) is a proprietary audio encode-decode process that claims to provide increased dynamic range over that of standard Compact Disc Digital Audio, while retaining backward compatibility with existing compact disc players. Originally developed by Pacific Microsonics, the first HDCD-enabled CD was released in 1995. In 2000, the technology was purchased by Microsoft, and the following year, there were over 5,000 HDCD titles available. Microsoft's HDCD official website was discontinued in 2005; by 2008, the number of available titles had declined to around 4,000. A number of CD and DVD players include HDCD decoding, and versions 9 and above of Microsoft's Windows Media Player on personal computers are capable of decoding HDCD. HDCD was a favorite for several artists such as Neil Young, the Beach Boys and the Grateful Dead, all of whom have had multiple titles in their catalogs reissued in this format. Technical overview HDCD encodes the equivale ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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