The complete source forbuilding, designing, and remodelinggreenhomes.You can be a bitgreener, and also get a bit more performance in many/most cases, by using polyiso instead of XPS. Rigid foam is really yourbestoption to insulate masonry walls such as you have here.
Soundblocking – reduces or completely stops the transfer ofsound. Though the principles ofsoundproofinga home remain consistent across the board, the exact needs change from one property to the next.
ABUILTGREEN® home isbuiltusing sustainable practices and certified by a third party. It goes beyond energy efficiency, focusing on materials, air quality, ventilation, waste management, water conservation, and overall wellness.

This particular example perfectly highlights why Green Building For Better Soundproofing is so captivating.
BestPractices ForSoundproofing.SoundproofingEfficiency Chart. StcSoundproofingGuide.GreenSoundproofCurtain. Acoustic Foam Panels For Recording Studio. Wave -SoundAbsorbing Wall Systems From Soundtect.
BuildBookshelves for AddedSoundInsulation. Use White Noise Machines to Mask UnwantedSounds. Create aSoundproofBarrier with Greenery. 1. Insulate Your WallsforBetterSoundproofing.

This maysoundfancy, but it really just means we rate them on how muchsoundthey can block. You’ll see it referred to as the materials’ STC rating. Generally speaking, the higher the STC rating, thebetterthesoundproofingmaterial is at blockingsound. Types ofsoundproofingmaterials.
...bio-fabrication procedures, material properties and potential forgreen...
Basssoundspass right through foam panels. Thin foam on walls creates a false sense ofsoundproofingwithout solving actual noise problems. Thebestapproach combines foam for internal acoustics with mass-based solutions for realsoundproofing.