Initially I was using a mod like this (MineBeepSmokeDetectorChirp by FujiGang) but there were some issues with it imo. The sound didn't play in sync with the mine blinking because the sound file didn't play the beep right away. Also there was quite some noise.
So I decided to denoise the audio file and cut the audio to play straight away and thus in sync with the mine's visual indicator.
Since then the sound was entirely replaced with a better quality version and I'm quite happy with it now.
LCMaxSounds mostly fixes audio clipping, cutting in/out or missing sounds entirely. Thus it's a hard dependency.
We also switched to loaforcsSoundAPI because that's what the major modpacks (LR) are using and it generally has less issues than LCSoundTool.
Please replace your smoke detector's battery when they're making this sound ;)
