With recording I have done different experiment to observe the effect

This is close to the kitchen hood, right under it with the windscreen

Without

1 meter distance

behind the door

sound coming from back of the people (sound hebind people)
With recording I have done different experiment to observe the effect

This is close to the kitchen hood, right under it with the windscreen

Without

1 meter distance

behind the door

sound coming from back of the people (sound hebind people)