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 include such as storage, compression, transmission, enhancement (e.g., equalisation, noise cancelation, echo removal or addition etc.), source separation, and audio effects.

Audio storage techniques:

• Vinyl record

• Compact cassette

• Digital audio tape (DAT)

• Compact disc (CD)

• DVD

• 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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