What are the three interfaces on the sound card?

Green is the audio output interface;

Pink is the microphone input interface.

With the support of the new driver, these three interfaces behind the high-definition audio integrated sound card can output 5. 1 channel analog signals.

As an audio input port, the blue interface can be connected to a radio, and the sound of a tape recorder can be converted into an audio file, or the sound of a condenser microphone is unsatisfactory. You can also use a dynamic microphone to connect to a microphone amplifier, and then connect this interface from the output end of the microphone amplifier to be used as a microphone. As audio output, the green interface can be connected to stereo or headphones. Pink interface supports direct access of condenser microphone.

Extended data

The audio input port is used to input the sound sources of other devices into the mini-combination. Usually mini-combo with recording function has this interface. In addition, the audio input interface can also play the sounds of other audio sources through mini-combination.

The audio input port can input the sound sources of other devices into the mini-combination. Usually, mini-groups with recording function have this interface. In addition, the audio input port can also be used to play the sounds of other audio sources through mini-combination. The common audio input interface is RCA port.

RCA is the abbreviation of Lotus Socket. It is not specifically designed for any type of interface. Can be used for audio, ordinary video signals and DVD component (YCrCb) sockets, but the number is three.

This is by far the most common audio/video connection terminal. This two-wire connection terminal was invented by RCA recording company as early as the radio era, and there is a more old-fashioned and strange name called "turntable" connector.

The RCA terminal adopts coaxial signal transmission mode, the central shaft is used for signal transmission, and the contact layer around the outer edge is used for grounding, which can be used for transmitting digital audio signals and analog video signals. RCA audio terminals are generally labeled with different colors in pairs: the right channel is red (or the letter "R" means "right"); The left channel is black or white.

Sometimes, the center and surround channel connectors are marked with other colors to distinguish wiring, but all RCA connectors in the whole system are the same in electrical performance. Generally speaking, RCA stereo audio line is a set of left and right channels, and each channel is a line in appearance.

References:

Baidu encyclopedia audio input port