How much audio time is on a CD?
Standard CDs have a diameter of 120 millimetres (4.7 in) and are designed to hold up to 74 minutes of uncompressed stereo digital audio or about 650 MB of data. Capacity is routinely extended to 80 minutes and 700 MB by arranging more data closely on the same sized disc.
Why is a CD 74 minutes long?
The original target storage capacity for a CD was one hour of audio content, and a disc diameter of 115 mm was sufficient for this, however both parties [Sony and Philips] extended the capacity to 74 minutes to accommodate a complete performance of Beethoven’s 9th Symphony.
What is the lifespan of a CD?
Among the manufacturers that have done testing, there is consensus that, under recommended storage conditions, CD-R, DVD-R, and DVD+R discs should have a life expectancy of 100 to 200 years or more; CD-RW, DVD-RW, DVD+RW, and DVD-RAM discs should have a life expectancy of 25 years or more.
How long is a 700MB audio CD?
80min
In most cases a 700MB CD-R will accommodate up to 80min of audio. 74 minutes is the original Red Book spec (corresponding to 650MB CD-Rs). Commercial CDs have been exceeding that for a long time (in a few exceptional cases slightly over 80min).
Why do CDs only hold 80 minutes?
Audio CDs are not the same thing as data CDs, and they do not contain MP3 files. An audio CD contains audio data in CDDA (Compact Disc Digital Audio) format. A minute of CDDA audio always takes up the same amount of space on the disc, which is why you can only burn a maximum number of minutes to a disc.
Why was the first CD made to fit 75 minutes?
It’s because of Beethoven. In the 1980s, when Sony and Philips were beginning to negotiate a single industry standard for the new compact disc technology. One key issue was whether the circumference of the new disc should be 11.5cm or 12cm.
How do I burn a CD more than 80 minutes?
Now, instead of only 80 minutes worth of music you can fit 800MB worth of MP3 files on one CD. Insert a blank CD in your computer’s CD burner. Press the “Eject” button on the outside of the CD burner to close the disc tray. Open your CD burning program.
What’s the maximum length of an audio CD?
For audio CDs, the maximum length for audio is 79 minutes and 59 seconds. The website will usually let you know if your uploaded audio is too long. (We recommend staying around 78 minutes to ensure that none of your final track gets cut off).
Why is a CD 74 minutes in length?
But there’s a twist to this story. The real limit for CDs started at 72 minutes, not 74 minutes, since this was the maximum length of the U-Matic videotapes which were used for audio masters.
What was the original playing time of a compact disc?
The creators of the CD originally aimed at a playing time of 60 minutes with a disc diameter of 100 mm (Sony) or 115 mm (Philips). Sony vice-president Norio Ohga suggested extending the capacity to 74 minutes to accommodate the recording of Wilhelm Furtwängler conducting Ludwig van Beethoven ‘s Ninth Symphony at the 1951 Bayreuth Festival.
Which is the standard format for digital audio?
e 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, one of a series of Rainbow Books (named for their binding colors) that contain the technical specifications for all CD formats.