I love the skill of the sound effects person working in a theater. Before anyone thought of recording sound effects and playing them during the production, the sound effects - creaking doors, howls of wolves or coyotes, horse hooves, etc, had to be made with perfect timing during the production.
Sound effects can add immeasurably to the atmosphere in a radio program or a movie. An important tool is the effective use of music. Barbara and I enjoy watching Sherlock Holmes stories, Poirot episodes, and similar productions. They all depend for their effectiveness on well produced sound effects.
Alas, I have recently noticed inappropriate overuse of loud music, often played at the same time as dialogue is taking place on the screen. It is as if a new generation of sound technicians believe that loud noise is more important than allowing the viewer to hear the words. I deplore this.