Optical audio disc
An Audio optical disc is an optical disc that stores sound information such as music or speech.
It may specifically refer to:
- Compressed audio optical disc encompasses all 120mm disc capacities (CDs being 700MB per disc, DVDs being 4 GB per layer per disc), this disc contains MP3s and other compressed audio files in Yellow Book format. In 1979, a prototype CD system was demonstrated in Europe and Japan; Sony then agreed to join into the collaboration, and both Sony and Philips compromised on the standard sampling rate of 44.1 kHz and the choice to use 16-bit audio. The disc diameter was changed from 115 to 120 mm to allow for 74 minutes of playback with the sampling rate and quality chosen.
Audio CDs
- Compact disc (CD), an optical disc used to store digital data (700 MB storage)
- Compact Disc Digital Audio (CD-DA), a CD that contains PCM encoded digital audio in the original "Red Book" CD-DA format
- 5.1 Music Disc, an extension to the red book standard that uses DTS Coherent Acoustics 5.1 surround sound
Audio DVDs
- DVD, 4 GB single layer, 8 GB double layer storage
- DVD-Audio, a DVD that plays audio
- Super Audio CD (SACD), a format which competes with DVD-Audio
Audio Blu-rays
- Blu-Ray, 25 GB single layer, 50 GB double layer
- BD-Audio, a Blu-ray disc that is capable of audio-only playback
See also
- CD-4 or Compatible discrete four-channel sound, a variety of quadrophonic audio for vinyl records
This article is issued from Wikipedia - version of the 4/25/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.