Sound insulation effect of wall panels

1. If the objective average sound insulation level is below 30 decibels, but the normal conversation sound next door can be heard clearly and the conversation content is easy to understand, then the sound insulation effect is very poor.
2. If a loud conversation can be heard quite clearly at 30-35 decibels, and a normal conversation can be heard, but it is not easy to understand, then the sound insulation effect is very poor.
3. At 35-40 decibels, loud conversations can be heard, but they are not very clear, and normal conversations are also very weak. The sound insulation effect is obviously average.
4. At 40-45 decibels, loud conversations can be heard, but not fully understood. Normal conversations cannot be heard, and the sound insulation effect is good.
5. If you cannot hear a loud conversation at 45-50 decibels, and only slightly hear the loudest sound of shouting and radio on, then the sound insulation effect is good. You can give a score of 60.
6. Shouting loudly at 50-55 decibels is not audible, and the maximum sound on the radio is not audible, then the sound insulation effect is considered excellent.