Input through a microphone connector can be used, for example, by speech recognition or voice over IP applications. The integrated circuit on the left is a 3403 single power supply quad operational amplifier.Ī common external connector is the microphone connector. Sound cards are also used for computer-based communication such as voice over IP and teleconferencing.Ĭlose-up of a sound card PCB, showing electrolytic capacitors, SMT capacitors and resistors, and a YAC512 two-channel 16-bit DAC. Typical uses of sound cards or sound card functionality include providing the audio component for multimedia applications such as music composition, editing video or audio, presentation, education and entertainment (games) and video projection. Sound processing hardware is also present on modern video cards with HDMI to output sound along with the video using that connector previously they used a S/PDIF connection to the motherboard or sound card. The integrated sound system is often still referred to as a sound card. Sound functionality can also be integrated onto the motherboard, using components similar to those found on plug-in cards. The term sound card is also applied to external audio interfaces used for professional audio applications.
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