Channel 3 (Wave) OFF not emulated correctly

[coffeevalenbat]

So I've been messing around with getting the cleanest possible sample playback from channel 3, I modified some sample code from GB Studio and tried it out on a few emulators, at first I was happy that it sounded clean as water on Sameboy, as that's where I always test sound stuff first, but after I got some friends to test it on real hardware and other emulators, it seems like the issue is Sameboy being too good. It lacks the click noise heard while channel 3 is off (IE, when rAUD3ENA is 0). While this does make for a better sounding experience, it is also misleading and innacurate.

Sameboy:

SameBoy.v0.15.8.2023-04-15.16-10-00.mp4

MGBA (I cannot test on real hardware myself right now, but I was told real hardware [At least a GB Pocket] sounds like this):

mGBA.-.SAMPLECLEAR.59.8.fps.-.0.10.1.2023-04-15.16-09-36.mp4

For testing, here is the ROM in question, the sample plays when the player presses the B button.

[Buggem]

I'm a bit confused here. Why is this guy in the top corner around 0 seconds in?

[coffeevalenbat]

...that is my cursor :P

[carmiker]

For the record, Gambatte sounds like the second video posted (like mGBA or ostensibly real hardware).