Sound Editing:Audio devices, Formats and

CodecsBy:Moad Hilaly & Roberto Cardoza

Sound Editing

FormatsWav, Midi, Aiff,

Cada, Mp3, Wma and Aup.

Audio Devices

Microphones,Loudspeakers,Soundcards,

Soundports and headphones

CodecsLoss codecs and Lossless

codecs

Index

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.

Sound Editing

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

Examples: Microphones.

Audio Devices

-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.

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.

Formats

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.

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.

Codecs