Audio front panel pc,audio usb front panel,headphone amplifier front panel 

The difference between AC97 front panel and HD front panel:

• The front panel of AC97 is only available in the main box that adopts the AC97 specification. It is a standard of the previous generation of computer audio coding. The standard stipulates that the audio interface needs to use "dual chips". Together, the AC97 separates the two, which reduces electromagnetic interference and makes the sound clearer than the previous generation ISA.

Since the front panel of AC97 uses a direct connection method, users do not need to go through any sensing device to insert the device. Therefore, when inserting headphones on the host using the front panel of AC97, it is necessary to disable the front panel jack detection first, and tick the first space in the above figure. OK on it.

• The HD front panel is only available on the host that uses the intel specification. The HD front panel uses the HD sound card. The HD sound card is a new standard launched by intel and more than 80 companies around the world. It is also called HD Audio. The purpose is to replace the previous AC97 standard.

The jack on the audio front panel pc of the HD can automatically detect the user inserting the device and pop up a prompt box for the user to choose. Whether it is inserted into the headphone jack or the microphone jack, HD Audio can automatically identify the device and use it. Even if the microphone is inserted into the headphone jack, it can still be used normally. .

Specification points for the Intel AC97 front audio interface:

✔️Audio connector

The connector design should support the use of standard front panel microphones and headphones. To be able to use audio directly without special software. The front panel audio connectors are designed to support stereo audio output (headphones or powered speakers) and microphone input (one mono). The mic input (one mono) is connected to a 3.5mm mini jack mounted on the front panel. The core of the socket is terminated with the microphone input signal, and the outer ring is terminated with the microphone audio bias signal.

✔️Electrical connections

The two headphone amplifier front panel audio outputs (AUD_FPOUT_L and AUD_FPOUT_R) and the two front panel audio returns (AUD_RET_L and AUD_RET_R) are connected to a switch-type 3.5mm mini-socket mounted on the front panel. The audio signal transmission path is: when the front panel socket is not used, the audio signal output by the main board is sent to the front panel socket by AUD_FPOUT_L and AUD_FPOUT_R. After passing through the front panel socket, AUD_FPOUT_L and AUD_FPOUT_R return to the rear audio socket of the motherboard. When the front audio socket is plugged into the earphone, the switches connected (AUD_FPOUT_L and AUD_RET_L, AUD_FPOUT_R and AUD_RET_R) in the socket are disconnected, and the audio signal returning to the motherboard is disconnected. There is no audio signal in the rear socket, only the front has audio signal.

✔️Jumper for connector

If the front audio cable is not connected to the front audio socket on the motherboard, the 5 and 6, 9 and 10 pins of the socket should be shorted with jumpers, otherwise the rear audio socket will be invalid.

Conclusion

For more information about audio front panel pc,audio usb front panel,headphone amplifier front panel, we are glad to answer for you.