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.
