First, consider the treatment from the source of kitchen equipment, silence the exhaust fan, and at the same time consider the vibration isolation and vibration reduction of these equipment. After these sound insulation and noise reduction measures are implemented, if they are not ideal, consider the second measure.
Second, the second measure is to deal with the noise at the receiving point, mainly by adding sound-proof doors and windows at the receiving point to keep the external noise out of the doors and windows. After closing the doors and windows, the indoor quiet environment can be fully maintained.