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Audio signal processing

Audio signal processing, sometimes referred 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 electrical where the voltage level implies the pressure level (that is, the sound). Similarly, a digital representation expresses the pressure wave-form in a binary sequence.

Processing methods and application areas include such as storage, compression, transmission, enhancement (e.g., equalization, noise cancellation, echo removal or addition etc.), source separation, sound effects and computer music.

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