In Reply to: Don't agree at all posted by Belgarchi on July 12, 2012 at 16:40:24:
The on-axis response only predicts the spectral balance of the first-arrival sound that reaches your ears. The power response predicts the spectal balance of the reverberant energy also, and I agree with Thorsten's giving greater weight to the power response.
The floor-bounce notch is a naturally-occuring comb-filter phenomenon, and as such is subjectively rather benign. It occurs every time two people have a conversation in a non-anechoic space. I'm not saying its effect is inaudible, just that it's not a big deal. The ears do not process sound the same way measuring equipment does; the microphone sums the first-arrival sound and the floor-bounce and gets a notch, but the ears can tell the difference and so you don't really hear that deep floor-bounce notch that looks so bad on a graph as long as it is naturally induced by the room's acoustics (and neither electronically generated nor on the recording, as in either of these cases it is readily perceived as coloration of the first-arrival sound).
One of my designs happens to minimize the floor-bounce notch through driver geometry, but that's more a side-effect than a major design goal.
Duke
Me being a dealer makes you leery?? It gets worse... I'm a manufacturer too.
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Follow Ups
- I agree with Thorsten - Duke 21:30:27 07/12/12 (3)
- I don't agree or disagree - just have a more insightful, maybe even more useful comment... - villastrangiato 10:20:47 07/14/12 (2)
- insights - Duke 11:21:17 07/14/12 (1)
- RE: insights - villastrangiato 12:05:54 07/14/12 (0)