How to mitigate sound leaks at door seals

The door is often a very weak point acoustically. Check whether the door seals have any gaps ? Are the seals properly adjusted or misaligned? Do the door seals have something hard to push against to engage them?

The door is often a very weak point acoustically. Check whether the door seals have any gaps ? Are the seals properly adjusted or misaligned? Do the door seals have something hard to push against to engage them?