heli esitus, mis tavaliselt kasutab elektripinge analoogsignaale või digitaalsignaalide binaarnumbreid
representation of sound, typically using either a changing level of electrical voltage for analog signals, or a series of binary numbers for digital signals
Audio signals have frequencies in the audio frequency range of roughly 20 Hz to 20 000 Hz, which corresponds to the lower and upper limits of human hearing.
Good to know
Audio signals may be synthesized directly, or may originate at a transducer such as a microphone, musical instrument pickup, phonograph cartridge, or tape head.
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