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Audio signal, an electrical representation of sound; Audio frequency, a frequency in the audio spectrum; Digital audio, representation of sound in a form processed and/or stored by computers or digital electronics; Audio, audible content (media) in audio production and publishing; Semantic audio, extraction of symbols or meaning from audio
Digital audio is a representation of sound recorded in, or converted into, digital form. In digital audio, ...
Signal flow is the path an audio signal will take from source to the speaker or recording device. Signal flow may be short and simple as in a home audio system or long and convoluted in a recording studio and larger sound reinforcement system as the signal may pass through many sections of a large mixing console, external audio equipment, and even different rooms.
An audio frequency or audible frequency (AF) is a periodic vibration whose frequency is audible to the average human. The SI unit of frequency is the hertz (Hz). It is the property of sound that most determines pitch. [1] The generally accepted standard hearing range for humans is 20 to 20,000 Hz.
This lets the audio data be stored and transmitted by a wider variety of media. Digital recording stores audio as a series of binary numbers (zeros and ones) representing samples of the amplitude of the audio signal at equal time intervals, at a sample rate high enough to convey all sounds capable of being heard.
Calibre Audio Library is a UK charity providing a subscription-free service of unabridged audiobooks for people with sight problems, dyslexia or other disabilities, who cannot read print. They have a library of over 8,550 fiction and non-fiction titles which can be borrowed by post on MP3 CDs and memory sticks or via streaming.
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Sound is defined as "(a) Oscillation in pressure, stress, particle displacement, particle velocity, etc., propagated in a medium with internal forces (e.g., elastic or viscous), or the superposition of such propagated oscillation.