Let a professional do it. I have heard of companies that build studio's sometimes also do this kind of procjects. The have the experience and gear to do it. They have electronics that can map/determine the sonic behavior of your room. What frequencies needs to be damped. How much and with what delay you have echo etc etc.
Als I think it would be better to use a solid building material, bricks or concrete. I am not a fan of wooden houses.
Als I think it would be better to use a solid building material, bricks or concrete. I am not a fan of wooden houses.