https://acousticalsolutions.com/reduce-unwanted-outdoor-noise-sound-blocking-fence/
http://www.acoustiblok.com/acoustiblok-residential/customer-project-testimonials/
acousticalsurfaces.com > How to Quiet Noisy A/C Compressor
https://www.acoustiblok.com/acoustiblok-product-lines/acoustifence-noise-reducing-fences/
http://www.acoustifence.com/
Sound Silencer acoustical panels. These panels come in a 1″ and 2″ thickness, and are sold in 2′ x 4′ panels. The 1″ thickness normally sells for about $5.50 per square foot, or $44.00 per panel, and the 2″ thickness sells for about $7.50 per square foot, or $60.00 per panel.
Another and more costly lining is our Exterior Grade Sound Blanket. This compressor sound blanket is commonly used on chain-link or privacy style fences. This panel is constructed by quilting a nominally 1″ or 2″ thick layer of light density fiberglass to a 1/8″ thick, Gray, reinforced layer of mass loaded vinyl.