Definition of Audio interface
An audio interface is a piece of computer hardware that allows the input and output of audio signals to and from a host computer or recording device.
Audio interfaces are closely related to computer sound cards, but whereas sound cards are optimized for audio playback an audio interface is primarily intended to provide low-latency analog-to-digital and digital format conversion for professional audio applications.
Audio interfaces may include microphone preamps, as well as analog line inputs, DI inputs, and ADAT or S/PDIF digital inputs. Outputs are analog line, headphones and digital. They're typically available as external units, either as desktop devices or in a 19-inch rackmount format. Audio interfaces range from two channels in and out, to over 30.
Terms mentioned above
Related terms
Matrix mixer
A matrix mixer is an audio electronics device that routes multiple input audio signals…
DI unit
A DI unit (direct input or direct inject) is an electronic device typically used in…
Audio control surface
In the domain of digital audio, a control surface is a human interface device (HID) that…
Helical scan
Helical scan is a method of recording high-frequency signals on magnetic tape, used in…
Cassette adapter
A cassette adapter, also called a car connecting pack, is a device that allows audio…
Mult box
A mult box is a device that allows a single audio source, such as a microphone, to be…
History of multitrack recording
Multitrack recording of sound is the process in which sound and other electro-acoustic…
Transport (recording)
A transport is a device that handles a particular physical storage medium (such as…
Quadraphonic sound
Quadraphonic sound uses four audio channels in which speakers are positioned at the four…
Questions people ask
Real questions from the Stack Exchange community – follow a link to read the discussion.
- How to make ASIO work with multiple programs simultaneously : how can I listen to Guitar Rig plus something else through the same interface? · Music SE
- How necessary is a USB Audio Interface? · Music SE
- Do studio monitors need an audio interface? · Sound Design SE
- Noise in usb audio interface? · Sound Design SE
- Is it better to use a DI unit or USB audio interface to connect guitar to PC? · Sound Design SE
- How to connect two (2) MIDI devices to an Audio Interface with only one (1) MIDI In port? · Sound Design SE
Frequently asked questions
What is Audio interface?
An audio interface is a piece of computer hardware that allows the input and output of audio signals to and from a host computer or recording device.
Sources & credits
- Wikipedia: Audio interface – CC BY-SA 4.0
- Image by Ashley Pomeroy – CC BY-SA 4.0