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Soundstream Inc. was the first audiophile digital audio recording company, providing commercial services for recording and computer-based editing.〔Robert Easton, ''Soundstream, the first Digital Studio'', Recording Engineer/Producer, April 1976〕 ==The company== Soundstream was founded in 1975 in Salt Lake City, Utah by Dr. Thomas G. Stockham, Jr. The company provided worldwide on-location recording services to Telarc, Delos, RCA, Philips, Vanguard, Varèse Sarabande, Angel, Warner Brothers, CBS, Decca, Chalfont, and other labels. It also leased or sold some recorders (a total of 18 were manufactured). Although most recordings were of classical music, the range included country, rock, jazz, pop, and avant-garde. The first live digital recording, that of a symphony orchestra, was made in 1976 by Soundstream's prototype 37 kHz, 16-bit, two channel recorder. New World Records, which recorded the Santa Fe Opera's performance of Virgil Thomson's ''The Mother of Us All'', provided Soundstream with a stereo feed from their multitrack console. Soundstream demonstrated its recording of the opera at the Fall 1976 AES Convention.〔Thomas Fine, ''The Dawn of Commercial Digital Recording'', ARSC Journal Volume 39, No. 1, Spring 2008〕 Critiques of the recording, most notably from Telarc's Jack Renner and Robert Woods, led directly to the improved four-channel, 50 kHz sample rate recorder that was used for all of Soundstream's future commercial releases.〔 (The New World Records issue of ''Mother of Us All'' was not from the digital recording made by Soundstream, but rather from the analog tape that New World recorded themselves.) Also in 1976, Soundstream restored acoustic (pre-electronic) recordings of Enrico Caruso, by digitizing the recordings on a computer, and processing them using a technique called "blind deconvolution".〔Thomas Stockham, ''Restoration of Old Acoustic Recordings by means of Digital Signal Processing'', 41st Convention of the Audio Engineering Society, 1971a〕 These were released by RCA Records as "Caruso - A Legendary Performer". In subsequent years Soundstream restored most of the RCA Caruso catalog, as well as some RCA recordings by Irish tenor John McCormack. Soundstream’s first commercially released recording (popular music on the Orinda label) in 1978 was a month shy of the world’s first digitally recorded commercial release, Ry Cooder's "Bop till You Drop". For the ensuing three years, 50% of all classical music recorded digitally used Soundstream equipment. Unlike its competitors, Soundstream's analog circuitry was transformerless, permitting a frequency response to 0Hz (DC). This accounted for the "bass drum heard round the world"〔(IEEE Global History Network ), Telarc, Frederick Fennell, and an Overture to Digital Recording〕〔(Stereophile ), Interview: Jack Renner of Telarc: Direct from Cleveland!; Stereophile October 1998〕 review of the 1978 Telarc recording of ''Frederick Fennell: The Cleveland Symphonic Winds''.〔Tracy Eddy, ''The Bass Drum Heard `Round the World: Telarc, Frederick Fennell, and an Overture to Digital Recording'', (IEEE Today's Engineer Online, July 2005 )〕〔World Book Encyclopedia, ''Yearbook'', 1978〕 Soundstream collaborated with Telarc for several years, producing legendary symphonic recordings; the earliest ones are chronicled in Renner.〔Jack Renner, ''The Roots of Telarc'', Telarc newsletter, Fall 1992〕 The care with which Telarc selected and used its microphones and audio console, combined with the Soundstream recorder, created a gold standard for audiophile recording. Telarc has re-released many of its original Soundstream recordings in SACD format. Soundstream recordings made before the advent of the CD were released as high-quality vinyl LP albums. Despite analog playback, many of these releases were sufficiently impressive to gain an early acceptance for digital audio.〔David Ranada, ''A Dozen Digital Demo Discs'', Stereo Review, Jan. 1980〕〔BM/E, ''New Audio Tape Machine Delivers ‘Digital Fidelity’'', Feb. 1977〕 The recording industry’s transition to digital was further facilitated by the many demonstrations given by Dr. Stockham, whose articulate explanations of digital audio theory and practice were renowned.〔Thomas Stockham, ''A-D and D-A Converters: their Effect on Digital Audio Fidelity'', 41st Convention of the Audio Engineering Society, 1971b〕〔Thomas Stockham, ''Records of the Future'', Journal of the Audio Engineering Society, Oct. 1977〕 In 1980, Digital Recording Corporation (DRC) acquired Soundstream. DRC attempted to develop a home digital player that would use a photographically reproducible optical card as opposed to the mechanically pressed CD.〔John Miklosz, ''Digital Audio System uses Rectangular Records'', Electronic Engineering Times, Nov. 23, 1981〕 This effort was eclipsed by the rise of the CD, leading to the company’s demise in 1985. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Soundstream」の詳細全文を読む スポンサード リンク
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