Audio signal processing
Audio signal processing, sometimes referred to as audio processing or just audio, is the processing of a representation of auditory signals, or sound. The representation can be digital or analog. An analog representation is usually electrical; a voltage level represents the air pressure waveform of the sound. Similarly, a digital representation expresses the pressure wave-form as a sequence of symbols, usually binary numbers.
The focus in audio signal processing is most typically an analysis of which parts of the signal are audible. For example, a signal can be modified for different purposes such that the modification is controlled in the auditory domain. Which parts of the signal are heard and which are not, is not decided merely by physiology of the human hearing system, but very much by psychological properties. These properties are analysed within the field of psychoacoustics.
Processing methods and application areas include storage, compression, transmission, enhancement (e.g., equalization, filtering, noise cancellation, echo removal or addition etc.), source separation, sound effects and computer music.
Glossary
;PSOLA: stands for Pitch Synchronous Overlap Add Method.
;SOLAFS: stands for Synchronous Overlap-Add, Fixed Synthesis.
See also
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Referenced By
1/f noise | Acoustics | Codec | Computer-music | Computer music | Flicker noise | Foley artist | Gramophone | List of mathematical topics | List of mathematical topics (A-C) | List of mathematics topics | Music synthesizer | Music technology | Phaser | Phasers | Phonograph | Pink noise | Signal processing | Signal processsing | Sound effect | Sound pressure level | Speech processing | Speech recognition | Synth | Synthesiser | Synthesizer | Synthesizers | Talking-Machine | Talking Machine | Turntables | Voice analysis | Voice recognition
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