Speaker sound quality suddenly sounds rattled

[AC Question]

Today, noted that my speaker sound quality was cloudy, kinda like when a sound speaker is rattled or blown. I rarely listen to media on my phone, and absolutely do not have the sound all the way up, so don't know why it suddenly sounds like my phone speakers are blown. Wasn't like this yesterday. Any suggestions?

 

[StLucia]

By the way - this is a Samsung Galaxy Note 4