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A sound card (also known as an audio card) is an internal expansion card that provides input and output of audio signals to and from a computer under the control of computer programs. The term sound card is also applied to external audio interfaces used 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.
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Digital audio is a representation of sound recorded in, or converted into, digital form. In digital audio, the sound wave of the audio signal is typically encoded as numerical samples in a continuous sequence. For example, in CD audio, samples are taken 44,100 times per second, each with 16-bit resolution.
Control channels Controlled source Wave / PCM stereo: Audio signal generated by the CPU via the sound card's digital-to-analog converter. (This includes audio produced by games, MP3 or WAV players, but also some software playing a CD-DA through the CPU, such as, Windows Media Player or Media Player Classic, as well as TV tuner cards that use the CPU for decoding audio.)
The drummer for popular rock band My Chemical Romance was found dead inside his Tennessee home on Tuesday after not being seen alive since November 4.
The nonprofits handing out the pipes say it’s about “harm reduction” — effectively an “if you can’t beat ‘em, join ‘em” approach to the drug crisis.
Olena Ruban/Getty Images. 4. Incompatible: Taurus and Aquarius. The zodiac’s bull is stable and predictable, especially in matters of the heart.That can spell romance and reliability for some ...