Quiten a generator with car’s muffler

sir any mechanic can suggest u the exhaust according to the Generators engine... if u will put small exhaust tht will also damage ur gen by heating problem occured due to the back pressure n the bigger one will also effect the performance so contact the gen mechanic for better suggestions....

if the generator engine is loud it wont help decreasing sound

place the generator in your neighbor's house

I've placed my generator into my store room but leaves a little space for exhaust gases to go out of the store which has decreased the noise and I'm doing this for an year ..

ask any guy (who is into steel business, such as those who makes gates, grills etc) to make u a canopy of steel sheet. u can keep thermopole insulation outside, (not inside as it would melt). weld all the joints and leave some space for exhaust. this works. if u buy new canopy from brandeth road lhr, it costs around 20 k for 5 kva generator.

its engine sound not just exhaust sound.In order to make it a bit silent make some canopy wth proper Dynamics.