0 a circuit board (= small piece of electronic equipment) inside a computer that allows it to record and play sounds -- （计算机的）声卡
A single, full-duplex sound card is used for both speech recognition and audio output.
The quality of the reproduction depends on the sound card and synthesizer program.
While any current generation machine, or any older machine fitted with a 16-bit sound card will do this, this still leaves out a significant portion of the installed base.
Sometimes sound card hardware and drivers do not support recording a source that is being played.
Sometimes an updated sound card needs to be added in order to have excellent clarity for the voice recognition software.
A custom application ran the sound synthesis algorithm, and the instrument used custom front panel displays and a custom sound card.
The computer acts as a host for the sound card and software and provides processing power for audio editing.
This is helpful when a sound card does not have a hardware volume control.
