Compact Disc Digital Audio
|Media type||Optical disc|
|Encoding||2 channels of LPCM audio, each signed 16-bit values sampled at 44100 Hz|
|Capacity||up to 74–80 minutes (up to 24 minutes for mini 8 cm CD)|
|Read mechanism||Semiconductor laser (780 nm wavelength)|
- 1 Why is a CD 74 minutes long?
- 2 Why are CDs only 80 minutes?
- 3 What is the longest time for a CD?
- 4 What replaced CDs?
- 5 How many times can a CD be played?
- 6 Do CDs wear out?
- 7 Why is a CD 70 minutes?
- 8 What could Beethoven hear?
- 9 Are there CDs larger than 700MB?
- 10 What is the best format to burn music CDs?
- 11 What is the shortest CD?
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.
Why are CDs only 80 minutes?
Why Burning an Audio CD is Different This is uncompressed audio data, and it requires a lot more space than MP3 files, AAC files, or any other type of compressed audio file. 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.
What is the longest time for a CD?
The “Redbook” CD specifications state that CDs contain a maximum of 74 or 80 minutes of music. But over the years, record producers have tried to push that limit.
What replaced CDs?
Manufacturers have replaced the aging CD player with touch-screen media centers that offer streaming services, hands-free Bluetooth® and can play digital files from portable USB drives. Over the years, CD sections in stores have been shrinking as less and less people buy CDs.
How many times can a CD be played?
In short, no. Optical media like CDs and DVDs does not wear out from repeated use. It can degrade or become damaged, however. CDs and DVDs can degrade over time because their recording layers are made with a dye that is extremely photosensitive; it deteriorates when exposed to UV rays over time.
Do CDs wear out?
Do they wear out? Answer: Few things changed our digital lives like CDs and DVDs, especially when it became affordable to make our own discs. They don’t “wear out” in the same way a cassette tape or vinyl record used to wear out because there is no physical contact with the recording service, but they do deteriorate.
Why is a CD 70 minutes?
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. 9 would have to wait until 1997 before technological developments would allow it to be released on a single CD.
What could Beethoven hear?
The sound I can hear it is true, but not the words. Beethoven could apparently still hear some speech and music until 1812. But by the age of 44, he was almost totally deaf and unable to hear voices or so many of the sounds of his beloved countryside.
Are there CDs larger than 700MB?
While it’s common to find 700 MB discs capable of holding roughly 80 minutes of music, a few manufacturers make larger discs. Discs with a high storage capacity still are the same physical size.
What is the best format to burn music CDs?
When creating an audio CD the best source format to use is a WAV file (MP3s are always compressed from CD audio quality to some extent). Converting a 44.1 kHz WAV file to CDA introduces no noise, distortion or coloration to the sound.
What is the shortest CD?
The three-month CD is the shortest term and the five-year CD is the longest term. Bethpage also offers a 39-month bump-up CD. Besides CDs, Bethpage offers checking accounts, savings accounts, loans and other financial products.