yy has no sound when speaking via voice, and cannot hear other people’s voices. The talking light appears to be on for me but off for others. Sometimes it is intermittent.

Both parties adjust the audio.

Right-click the small speaker in the lower right corner, open the volume control, turn up the microphone, and check the microphone enhancement option in the advanced item under the microphone. If there is no microphone or advanced items in the volume control, check the microphone in options and properties. After changing the items in the mixer, the microphone and advanced items will appear. You can also try to check the front microphone jack (Front Pink in) and the rear microphone jack (Rear pink in). Try the front headphone jack (Front green in) and the rear headphone jack (Rear green in). If it doesn't work, there may be a problem with the driver. Use Driver Wizard to update the sound card driver.

If you want to hear your own voice, double-click the speaker and uncheck the mute checkbox under the microphone. Don't want to hear your own voice tick.