Audio devices allow you to play or record audio and come in two types: input and output. Audio formats store digital audio data using different file types like MP3, WAV, and WMA. Codecs encode or decode audio streams and can be either lossy, which reduces quality for more compression, or lossless, which retains all original audio information. Common input devices are microphones while output devices include speakers and headphones.

1. By:Moad Hilaly & Roberto Cardoza

3.  Introduction:
- Audio Devices: Audio devices allow you to
play or record audio, which can be sounds and
music. There are two types: Input and Output.
-Audio Formats: An audio format is a file
format for storing digital audio data on a computer
system or electronic device.
-Codec:A codec is a device or computer
program capable
of encoding or decoding a digital data
stream or signal. There are two types loss codecs
and lossless codecs.

4. -Input devices: they are devices that recive
sound, and convert it into digital signals in the
soundcard through the soundports.
Examples: Microphones.

5. -Output Devices: They are the devices that emit
digital signal transformed to sound by the
soundcard by plugin it into the soundports.
Examples:Loudspeakers and Headphones.

6.  Mp3: Is an encoding format for digital audio which
uses a form of lossy data compression. It is the
most common audio format for consumer
audio streaming or storage.
 Midi: Is a technical standard that describes the
relation between and instrument and a computer.

7.  WMA:Is an audio data compression technology
developed by Microsoft.
 WAV:Is a Microsoft and IBM audio file
format standard for storing an audio bitstream
on PCs.

8.  Loss codecs:Many of the more popular codecs in
the software world are lossy, meaning that they
reduce quality by some amount in order to achieve
compression.
 Lossless codecs: There are also
many lossless codecs which are typically used for
archiving data in a compressed form while
retaining all of the information present in the
original stream.