What measurement indicates how much sound is reduced or insulated?

Transmission loss is the measurement that indicates how much sound is reduced or insulated when it passes through a material or from one space to another. It quantifies the effectiveness of materials or structures in blocking sound, measured in decibels (dB). A high transmission loss value means that a substantial amount of sound is absorbed or blocked, resulting in quieter environments.

Understanding transmission loss is crucial in various fields, such as building design and acoustics, where controlling sound levels is important for comfort and functionality. The effectiveness of soundproofing materials or walls is often evaluated using this measurement to determine how well they obstruct sound from external sources or adjacent spaces.