Audio signal processing

Audio signal processing, sometimes refered shortly to as Audio processing or just Audio, is the processing of some representation of auditory signals, that is sound. The representation can be digital or analog. An analog representation is usually electrial where the voltage level implies the pressure level (that is, the sound). Similarly, a digital representation expresses the pressure wave-form in some numerical form.

Processing methods and application areas include such as storage?, compression, transmission, enhancement (e.g., equalisation, noise cancelation, echo removal or addition etc.), source separation, [audio effects]? and computer music.

Audio storage techniques:

• Vinyl record
• [Analog magnetic tape]?
  • [Compact cassette]?
  • [Reel-to-reel tape]?
• [Digital audio tape]? (DAT)
• Compact disc (CD)
• DVD
• Minidisc?
• Audio file format

Please add some more.

See also:

• Digital signal processing
• Video
• Codec

External resources:

• Audio Engineering Society http://www.aes.org/

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