The noise a blender makes is also proportional to what is being blended. If you were to try and blend a thick liquid, it'd be far quieter than blending frozen s

The noise a blender makes is also proportional to what is being blended. If you were to try and blend a thick liquid, it'd be far quieter than blending frozen strawberries, for instance. There isn't much one can do about this. Speaking of blending frozen strawberries, be aware that frozen berries can destroy cheaper blenders.