Audio coding format: Difference between revisions

Content deleted Content added
Add: authors 1-1. Removed parameters. Some additions/deletions were parameter name changes. | Use this tool. Report bugs. | #UCB_Gadget
Lossless, lossy, and uncompressed audio coding formats: "Consumer audio" doesn't exist except in business and marketing. Lossy codecs are no more standard (common) than non lossy. Clarified the application of lossy codec to transmitted audio efficiency.
Tags: Mobile edit Mobile web edit
Line 12:
A [[lossless compression|lossless]] audio coding format reduces the total data needed to represent a sound but can be de-coded to its original, uncompressed form. A [[lossy compression|lossy]] audio coding format additionally reduces the [[audio bit depth|bit resolution]] of the sound on top of compression, which results in far less data at the cost of irretrievably lost information.
 
ConsumerTransmitted (streamed) audio is most often compressed using lossy audio codecs as the smaller size is far more convenient for distribution. The most widely used audio coding formats are [[MP3]] and [[Advanced Audio Coding]] (AAC), both of which are lossy formats based on [[modified discrete cosine transform]] (MDCT) and [[perceptual coding]] algorithms.
 
Lossless audio coding formats such as [[FLAC]] and [[Apple Lossless]] are sometimes available, though at the cost of larger files.
 
[[Uncompressed audio]] formats, such as [[pulse-code modulation]] (PCM, or .wav), are also sometimes used. PCM was the standard format for [[Compact Disc Digital Audio]] (CDDA), before lossy compression eventually became the standard after the introduction of MP3.
 
==History==