To install click the Add extension button. That's it.

The source code for the WIKI 2 extension is being checked by specialists of the Mozilla Foundation, Google, and Apple. You could also do it yourself at any point in time.

Kelly Slayton
Congratulations on this excellent venture… what a great idea!
Alexander Grigorievskiy
I use WIKI 2 every day and almost forgot how the original Wikipedia looks like.
Live Statistics
English Articles
Improved in 24 Hours
Added in 24 Hours
What we do. Every page goes through several hundred of perfecting techniques; in live mode. Quite the same Wikipedia. Just better.

From Wikipedia, the free encyclopedia

An audio codec is a device or computer program capable of encoding or decoding a digital data stream (a codec) that encodes or decodes audio.[1][2][3][4] In software, an audio codec is a computer program implementing an algorithm that compresses and decompresses digital audio data according to a given audio file or streaming media audio coding format. The objective of the algorithm is to represent the high-fidelity audio signal with a minimum number of bits while retaining quality. This can effectively reduce the storage space and the bandwidth required for transmission of the stored audio file. Most software codecs are implemented as libraries which interface to one or more multimedia players. Most modern audio compression algorithms are based on modified discrete cosine transform (MDCT) coding and linear predictive coding (LPC).

In hardware, audio codec refers to a single device that encodes analog audio as digital signals and decodes digital back into analog. In other words, it contains both an analog-to-digital converter (ADC) and digital-to-analog converter (DAC) running off the same clock signal. This is used in sound cards that support both audio in and out, for instance. Hardware audio codecs send and receive digital data using buses such as AC-Link, I²S, SPI, I²C, etc. Most commonly the digital data is linear PCM, and this is the only format that most codecs support, but some legacy codecs support other formats such as G.711 for telephony.

YouTube Encyclopedic

  • 1/5
    19 232
    3 441
    390 376
    47 890
    1 173 846
  • How To Change Video Codec And Audio Codec With VLC Media Player?
  • Fix IDT High Definition Audio CODEC Driver Error Windows Encountered a Problem Error 0x8007001f
  • What is a Codec as Fast As Possible
  • How to Install aptX Bluetooth codec on Windows 10 with Download links
  • Audio File Formats - MP3, AAC, WAV, FLAC


See also

Listen to this article (2 minutes)
Spoken Wikipedia icon
This audio file was created from a revision of this article dated 3 April 2016 (2016-04-03), and does not reflect subsequent edits.


  1. ^ "Using codecs". Microsoft. Retrieved 2009-12-21.
  2. ^ " - Codec". Archived from the original on 2015-04-05. Retrieved 2009-12-21.
  3. ^ "Glossary - Codec". Retrieved 2009-12-21.
  4. ^ "Ubuntu Documentation - What is a codec?". Ubuntu Documentation Team. Archived from the original on February 19, 2012. Retrieved 2009-12-21.
This page was last edited on 27 September 2023, at 19:09
Basis of this page is in Wikipedia. Text is available under the CC BY-SA 3.0 Unported License. Non-text media are available under their specified licenses. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc. WIKI 2 is an independent company and has no affiliation with Wikimedia Foundation.