1. AUDIO DEVICES, FORMATS
AND CODECS

2. |Index|
 Audio Devices
 Codecs
 Sound formats
 Webgraphy

3. |Audio Devices|
Audio Devices allow you to reproduce or record
audio, including music, sounds, speech etc.
Some examples of Audio Devices are:
 MP4
 iPod
 Speakers
 Headphones

4. |Codecs|
A codec is a device or computer program that can
encode or decode a digital data stream or signal.
 Lossy Codecs: They have less quality because they
achieve compression.
 Lossless Codecs: They are used for archiving data
in a compressed form while retaining all of the
information present in the original stream.

5. |Sound Formats|
An audio format is a medium in which you can store sound and music.
 WAV: (Waveform Audio File Format) It is a Microsoft and IBM audio file format standard
for storing an audio bitstream on PCs.
 MIDI: (Musical Instrument Digital Interface) It describes a protocol, digital
interface and connectors and allows a wide variety of electronic musical
instruments, computers and other related devices to connect and communicate with one
another. It is for Apple.
 AIFF: (Audio Interchange File Format) It is an Apple audio file format standard used for
storing sound data for personal computers and other electronic audio devices.
 CDA: It is a small (44 byte) virtual file generated by Microsoft Windows for each
audio track on a standard "Red Book" CD-DA format audio CD as defined by the Table of
Contents.
 MP3: MPEG-1 or MPEG-2 Audio Layer III, more commonly referred to as MP3, is an
encoding format for digital audio which uses a form of lossy data compression.
 WMA: (Windows Media Audio) It is an audio data compression technology developed by
Microsoft.
 AUP: It is a file extension for a project file used by Audacity audio software. We can open it
on Windows, Linux or Mac OS X.

6. |Webgraphy|
 Wikipedia
 Whatis.com