Concept

Hard disk recorder

Summary
A hard disk recorder (HDR) is a system that uses a high-capacity hard disk to record digital audio or digital video. Hard disk recording systems represent an alternative to reel-to-reel audio tape recording and video tape recorders, and provide non-linear editing capabilities unavailable using tape recorders. Audio HDR systems, which can be standalone or computer-based, are typically combined with provisions for digital mixing and processing of the audio signal to produce a digital audio workstation (DAW). Direct-to-disk recording (DDR) refers to methods which may also use optical disc recording technologies such as DVD, and Compact disc. Prior to the 1980s, most recording studios used analog multitrack recorders, typically based on reel-to-reel tape. The first commercial hard disk recording system was the Sample-to-Disk 16-bit, 50 kHz digital recording option for the New England Digital Synclavier II in 1982. Stereo audio was not immediately available due to data input and output limitations on hard drives of that time. The high cost and limited capacity of these solutions limited their use to large professional audio recording studios, and even then, they were usually reserved for specific applications such as film post-production. With the arrival of the compact disc in 1982, digital recording became a major area of development by equipment makers. Several affordable solutions were released during the late 1980s and early 90s; many of these continued to use tape, either in reels, or in more manageable videocassettes. In 1993, iZ Technology Corporation developed RADAR (Random Access Digital Audio Recorder distributed by Otari), designed to replace 24-track tape machines. By the mid-1990s, with the steady decline of hard disk prices and the corresponding increases in capacity and portability, the cost of hard disk recording systems had dropped to the point where they became affordable for even smaller studios. Hard disk systems have since become the preferred method for studio recording.
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