You might need a “muffler”.
So you just purchased a generator or have an existing one and it’s loud? Well, lower priced or side engine valve generators tend to be louder than others. They were built to be on construction sites. To retain your neighbours from complaining and your ears from hurting, you can get what is called a “muffler” for your generator. You can get it as a muffler kit to connect to your generator to filter out the noise.
The muffler of course will reduce the noise but just don’t forget some generators are just plain noisy and that comes from the engine itself. With this there isn’t much you can do except get a generator that is known for its quiet capacity. Generac has a great quiet muffler that is worth checking out.