There are so many things that can effect how loud or quiet a bow is.I think the first thing to ask is,what draw weight is your bow and then what do your arrows weigh.You should probably have at least 8 grains of arrow weight per pound of draw weight.9 or 10 would be even better.
To light an arrow could even harm your bow.
If that is ok,find out what is the recommended brace height for your bow and then experiment increasing or decreasing it within that recommended range.Try to have the lowest brace height you can get,with the least noise.Changing brace height is done by twisting or untwisting the string.
Sometimes a change of string type can make a huge difference.
It would help if you post your bow type and all specs for your bow and arrows.Bow make,model,draw weight,fast flight string or dacron,arrow type,length,spine,point weight etc..
There are some very knowledgable people here that could tell you if you are close on spine and tune of your arrows and bow.After all those things are close,you can work on silencers etc..
For some time I have been having noise issues and the arrows have been slapping the edge of my shelf.I have been driving myself nuts,adjusting point weight and trying to get the right spine.
A few minutes ago,I decided to experiment with changing my grip on the bow.I took a looser grip up near the throat and the problem dissappeared and the arrow flight straightened right out.
I'm not saying that is your problem but just pointing out that many things can contribute to noise.
Don't dispare though.You came to the right place and that problem can be solved.You just need a little direction for your search for the source of your noise.Give a little more information,be very patient in your trials and always only change one thing at a time.Good luck.