The sound of the ocean waves crashing against the shoreline might make you feel like taking a walk on the beach. Or, when your alarm clock goes off in the morning, it starts out as an annoying buzz before it becomes tolerable and then finally sounds like music to your ears. Research has shown that how we experience sound has a lot to do with our moods and performance levels, but not in ways you might expect.
Sound can be relaxing or energizing depending on its frequency (low-frequency tones are relaxing while high-frequency ones tend to get us going). Our mood is also shaped by what we hear because different frequencies have been associated with emotions including happiness, sadness, anger, and fear.