SomNandi Industries designs and manufactures sound attenuators in India for HVAC contractors, MEP consultants, generator room installers, and industrial plants that need to cut duct and airflow noise without restricting system performance. A sound attenuator, also called a noise attenuator, acoustic silencer, or duct silencer, is a passive device fitted inside ductwork or an airflow path that absorbs and dissipates sound energy as air passes through it, reducing noise transmission while keeping airflow largely unaffected. HVAC designers, and generator room planners choosing a sound attenuator manufacturer in India for a new installation or a noise-complaint retrofit.