muted vs muffled

muted and muffled both are adjectives.

Word	Noun	Adjective	Verb	Adverb
muted	No	Yes	No	No
muffled	No	Yes	No	No

As adjectives, muted and muffled are synonyms defined as:

Other synonyms of muted include dull, softened.

muted (adjective)	muffled (adjective)
being or made softer or less loud or clear	wrapped up especially for protection or secrecy
in a softened tone	being or made softer or less loud or clear