Ideally, I'd like to see some measurements but.....
Are there any other absorbing materials like drapes?
Is the carpet thick and have a pad?
What is the construction? Plaster/lath, concrete, wood....
When you clap your hands, can you hear a slap or echo?
What is voice intelligibility like? Can you hear whispers?
What I am getting at is that if the room is really lively and ringing, low level sounds will get swallowed up.
Kal