There are many kinds of noise absorbing and soundproofing blankets - Residential Acoustics breaks down which ones will help keep the noise out.
Soundproof Blankets & Outdoor Sound Barriers
Sound-Absorbing Blanket Sound-Dampening Blanket
Can Blanket Insulation Lower Noise Levels on Equipment?
9 Easy Tricks to Soundproof an Apartment
PrivacyShield® ABBC-13 Barrier Backed Soundproofing Blanket
Sound Blankets & Removable Acoustic Wraps
These blankets are designed to cover the whole wall from floor to ceiling for proper acoustic room treatment., Acoustic panels for sound absorption,
Acoustic Noise Reduction Panels for Sound Absorption 96 x 80 (8 Ft Tall)
QBO Exterior Noise Control Blankets
PrivacyShield® ABBC-13EXT Exterior Barrier Backed Soundproofing