There are several things you can do to make your generator quieter. First and foremost, you should consider raising the generator off the floor and placing its supports onto rubberized or wooden platforms that can massively reduce the vibration and noise a generator will produce. Another thing you can do is make a box for the generator. However, you’ll need to ensure space and allowance for air circulation and consider fire hazards and heat build-up. Finally, you can set it to a lower power setting which will reduce the RPMs of the generator and lower the noise it creates quite drastically, which is ideal if you’re only using it for low-power appliances.