Elizabeth - I don't think that is true, because:
1) You can go to the manufacturer's page and view tables of the amount of absorption per frequency over a range of frequencies
2) The limitations of absorption pattern will not be any different for commercial products that are made of the same fiberglass
That said, I agree that the compressed fiberglass panels do have a sonic signature, and they do not absorb evenly across the whole spectrum. Do you have other suggestions for better absorption patterns?
1) You can go to the manufacturer's page and view tables of the amount of absorption per frequency over a range of frequencies
2) The limitations of absorption pattern will not be any different for commercial products that are made of the same fiberglass
That said, I agree that the compressed fiberglass panels do have a sonic signature, and they do not absorb evenly across the whole spectrum. Do you have other suggestions for better absorption patterns?