Hello, I Recently Went To Colorado. I Adjusted To The

Hello,

I recently went to Colorado. I adjusted to the elevation, and seemed to be ok. During my drives around the mountains, and my flights there and back, I felt my "ears pop" and nothing seemed out of the ordinary. Now, back in Georgia, I feel like background sounds and music are particularly loud. At certain frequencies, I hear, almost a whistling echo in my ears. Music sounds loud, but conversation feels muffled. What might be the cause?