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Early digital audio machines had disappointing results, with digital converters introducing errors that the ear could detect. [36] Record companies released their first LPs based on digital audio masters in the late 1970s. CDs became available in the early 1980s. At this time analog sound reproduction was a mature technology.
Digital Up to 13 hours on a standard 80-minute MiniDisc. Up to 45 hours on a 1 GB Hi-MD (MiniDisc) Digital audio player: Digital Roughly 186 hours of playback per 10 GiB, assuming an average bitrate of 128 kbit/s. Roughly 372 hours with 64 kbit/s and roughly 74 hours with 320 kbit/s. DVD: Digital
An audio conversion app (also known as an audio converter) transcodes one audio file format into another; for example, from FLAC into MP3. It may allow selection of encoding parameters for each of the output file to optimize its quality and size.
For example, MP3 and AAC dominate the personal audio market in terms of market share, though many other formats are comparably well suited to fill this role from a purely technical standpoint. First public release date is first of either specification publishing or source releasing, or in the case of closed-specification, closed-source codecs ...
FLAC (Free Lossless Audio Codec): A lossless compression format that maintains the original audio quality but creates files larger than MP3s. OGG Vorbis: An open-source, lossless compression format gaining popularity for its quality and compatibility. Some audio conversion functions can be performed by software or by specialized hardware.
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An audio format is a medium for sound recording and reproduction. The term is applied to both the physical recording media and the recording formats of the audio content —in computer science it is often limited to the audio file format , but its wider use usually refers to the physical method used to store the data.
Record restoration, a particular kind of audio restoration, is the process of converting the analog signal stored on gramophone records (either 78 rpm shellac, or 45 and 33⅓ rpm vinyl) into digital audio files that can then be edited with computer software and eventually stored on a hard-drive, recorded to digital tape, or burned to a CD or DVD.