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Sound

Sound. What you hear . is waves, an analog format. BUT what is stored on a computer, or music CD is digital. Vinyl, and cassette (and 8 track) are already analog. Conversion.

jana-bennett
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Sound

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  1. Sound

  2. What you hear • is waves, an analog format. • BUT what is stored on a computer, or music CD is digital. • Vinyl, and cassette (and 8 track) are already analog.

  3. Conversion • Since what you hear is not digital storing (and retrieving) sound must be done in such a manner as to make the differences small enough. • A codec (compression – decompression algorithm) is used to transform information from one form to another. • So, for example, if you have a file that contains a song in mp3 format then in order to “play” it on your computer, the player must have access to a codec that converts mp3 files into the correct format to play.

  4. Codecs • There are codecs for converting data in a variety of formats: audio, video, streamed. • When data is converted it is then stored in a “container” file. • Some software for playing files has the codecs built in (VLC) while others require separate Codec libraries.

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