What is digital audio?

Digital Audio

Digital audio refers to technology that records, stores, and reproduces sound by encoding an audio signal in digital form instead of analog form. Sound is passed through an analog-to-digital converter (ADC), and pulse-code modulation is typically used to encode it as a digital signal. A digital-to-analog converter performs the reverse process, and converts the digital signal back into an audible sound. Digital audio systems may include compression, storage, processing and transmission components. Conversion to a digital format allows convenient manipulation, storage, transmission and retrieval of an audio signal.

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Some articles on digital audio:

Compact Disc Subcode
... In addition to digital audio, a compact disc contains digital data called subcode or subchannel data, which is multiplexed with the digital audio ... A frame comprises 33 bytes, of which 24 bytes are audio (six full stereo samples), eight bytes are error correction (CIRC-generated), and one byte is for subcode ... In each sector there are 2352 bytes (24×98) of audio content data and 96 bytes of subchannel data ...
Latency (audio) - Audio Latency in Live Performance
... Professional digital audio equipment has latency associated with two general processes conversion from one format to another, and digital signal processing (DSP) tasks such as equalization, compression and routing ... Analog audio equipment has no appreciable latency ... Digital conversion processes include analog-to-digital converters (ADC), digital-to-analog converters (DAC), and various changes from one digital ...
Digidesign - History
1989 - Digidesign launches the first digital audio workstation system, Sound Tools, for the Apple Macintosh ... multitrack system, marking a significant advance in digital audio ... This integrated software and hardware system (digital audio workstation) is among the most popular for audio production for television, music, and film ...
SLIMbus
... The interface supports many digital audio components simultaneously, and carries multiple digital audio data streams at differing sample rates and bit widths ... a mobile terminal or portable product, SLIMbus may replace legacy digital audio interfaces such as PCM, I2S, and SSI (Synchronous Serial Interface for digital audio), as well as some instances of many digital ...
Digital Audio Interfaces
... Audio-specific interfaces include AC'97 (Audio Codec 1997) interface between Integrated circuits on PC motherboards Intel High Definition Audio A modern ... USB, FireWire, and PCI) can carry digital audio ... Also, several interfaces are engineered to carry digital video and audio together, including HDMI and DisplayPort ...