It can lead to grumpiness, lack of sleep, tension within the family and irritability on the job. One of the most economical ways to reduce sound is to install fiber glass acoustic insulation in your walls.
Acoustic insulation absorbs and dampens sound waves.
An STC rating is a number used to characterize the sound insulation value of a partition. Recommended STCs depend on the particular type of room. For example, for bedrooms, an STC of 48 to 55 is good and above 55 is excellent. While installing insulation alone can raise the STC rating, further improvement can come from using resilient channels between drywall and studs or joists. Properly installed resilient channels will break the vibration path which can help reduce sound transmission.