The compact disc (CD) is a digital optical disc data storage format that was co-developed by Philips and Sony to store and play digital audio recordings. It uses the Compact Disc Digital Audio format which typically provides 74 minutes of audio on a disc.

2024年3月6日 · The invention of the standard compact disc revolutionized the way music, data, and later video were stored and distributed, marking a significant leap from analog to digital storage media. Developed jointly by Philips and Sony, the CD format was finalized in 1982 and famously documented in the Red Book standard.

2025年3月5日 · compact disc (CD), a molded plastic disc containing digital data that is scanned by a laser beam for the reproduction of recorded sound and other information. Since its commercial introduction in 1982, the audio CD has almost completely replaced the phonograph disc (or record) for high-fidelity recorded music.

Compact Disc Digital Audio (CDDA or CD-DA), also known as Digital Audio Compact Disc or simply as Audio CD, is the standard format for audio compact discs. The standard is defined in the Red Book technical specifications, which is why the format is also dubbed "Redbook audio" in some contexts. [1]

2023年10月19日 · What Is A Compact Disc? Compact disc CD is a digital storage format for optical media jointly developed by Philips and Sony. The CD format was originally developed for storing and playing sound recordings but was later adapted for storing data.

A compact disc is a portable storage medium that can record, store and play back audio, video and other data in digital form. A standard compact disc measures 4.7 inches, or 120 millimeters (mm), across, is 1.2 mm thick, weighs between 15 grams and 20 grams, and has a capacity of 80 minutes of audio, or 650 megabytes (MB) to 700 MB of data.

2024年12月31日 · A standard CD is a 12 cm (4.7 inches) disc that employs a digitally encoded pattern, representing audio data in a non-linear format. CDs utilize a sample rate of 44.1 kHz and a bit depth of 16 bits, providing dynamic range and …

A compact disc, also called a CD is a storage device in the form of small plastic discs which store and retrieve computer data or music using light. Compact Discs replaced floppy disks because they were faster and could hold more information. The CDs made floppy disks become obsolete.

2023年4月18日 · Stands for " Compact Disc." A CD is a type of optical media for storing digital audio and data. CDs are circular discs, 120 mm (4.7 in) in diameter and 1.2 mm (0.047 in) thick.

2025年2月21日 · Abbreviated as CD, a Compact Disc is a flat, round optical storage medium invented by James Russell. The first CD was created at a Philips factory in Germany on August 17, 1982. The picture shows the bottom of a standard compact disc and is …