The theory of signal processing and its application to audio was largely developed at Bell Labs in the mid 20th century. Audio processing was necessary for early radio broadcasting, as there were many problems with studio-to-transmitter links. The motivation for audio signal processing began at the beginning of the 20th century with inventions like the telephone, phonograph, and radio that allowed for the transmission and storage of audio signals. Analog processors operate directly on the electrical signal, while digital processors operate mathematically on its digital representation. As audio signals may be represented in either digital or analog format, processing may occur in either domain. The energy contained in audio signals is typically measured in decibels. Audio signals are electronic representations of sound waves- longitudinal waves which travel through air, consisting of compressions and rarefactions. JSTOR ( June 2021) ( Learn how and when to remove this template message)Īudio signal processing is a subfield of signal processing that is concerned with the electronic manipulation of audio signals.Unsourced material may be challenged and removed.įind sources: "Audio signal processing" – news
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