Specifically,This problem seems to be limited to Pixel 3 XL, at certain volume levels, or songs, notifications,videoUnder the sound, the Pixel 3 XL's speakers will beep, sometimes at very low volume.
After testing, users found that the problem of this speaker will be more serious between the low frequency of 20-500Hz.
Some users have reported that the problem will disappear on its own.However, more people think that this is a hardware problem with Pixel 3 XL and may require a replacement to resolve.
In general, using the Pixel series of mobile phones, it seems that the problem is not perfect. Last year, the small problems of Pixel 2 XL were like a cow's hair. There were screen color shifts, too fast burnt screens, yin and yang screens, and side bluish The problem of oleophobic wear, splash screen, camera failure to start, and even slowing down.
It seems that even if you buy HTC engineers, Google's hardware level still does not reach the pass line.