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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.
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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 sound card with the external DAC consumes 75 W, and thus is the first sound card from Creative that requires auxiliary power, using a 6-pin PCI-E connector to supply power to the external DAC. The card was officially released on July 10, 2019, to celebrate 30 years since the introduction of the original Sound Blaster.
Sound Blaster Pro 2.0 and later cards for PC (including Sound Blaster 16, AdLib Gold 1000 and AWE32) Silicon-gate CMOS chip [54] [33] [63] Yamaha YMF271 (a.k.a. OPX) 1993 36 18 4 12 additional PCM channels Yamaha YMF278 (a.k.a. OPL4) 1993 36 18 4 Moonsound cartridge for MSX computer [77] Yamaha YMF292 (a.k.a. SCSP) 1994 32 32 32
Sound Blaster Audigy is a product line of sound cards from Creative Technology. The flagship model of the Audigy family used the EMU10K2 audio DSP, an improved version of the SB-Live's EMU10K1, while the value/SE editions were built with a less-expensive audio controller.
Early systems such as Digidesign's Sound Tools (1989) and Session 8 (1993) [3] and the Ensoniq PARIS (1998) consisted of an external unit that connected to the host computer with a ISA or SCSI card, but from the late 1990s onwards it became practical to use standard computer interfaces such as FireWire, USB, and eventually Thunderbolt instead.
In addition to PCI and PCIe internal sound cards, Creative also released an external USB-based solution (named X-Mod) in November 2006. X-Mod is listed in the same category as the rest of the X-Fi lineup, but is only a stereo device, marketed to improve music playing from laptop computers, and with lower specifications than the internal offerings.