There are many kinds of noise absorbing and soundproofing blankets - Residential Acoustics breaks down which ones will help keep the noise out.
Using Soundproof Blankets to Reduce Noise - Residential Acoustics®
door soundproofing acoustic blanket noise insulation
Soundproof with blankets – Acoustic Fields
Using Soundproof Blankets to Reduce Noise - Residential Acoustics®
Soundproof with blankets – Acoustic Fields
How To Soundproof A Room With Blankets A
QBO Exterior Noise Control Blankets
Where To Place Acoustic Panels - Install Sound Panels to Reduce Echo
Home Theater Soundproofing & Sound Absorption