In Reply to: RE: I now understand the emphasis on amplitude measurements over time measurements posted by rick_m on July 31, 2007 at 22:29:17:
of a driver in a system designed with it inverted actually creates a hump, rather than a notch. The inverted driver, being reversed to the polarity of the adjacent driver will generate cancellation where the frequencies overlap, and thus give the system a perceived steeper roll off at the crossover point.
I find the humps generally acceptable as it is not always that there is music in that overlap range. In your case, I would guess that the crossover is in the 2K to 3KHz range. Being that tuning A is about 440 Hz, you're in the fourth harmonic range for the most part.
As for hearing sensitivity range, calculate the distance between your ears (seriously !). That would translate to a wavelength of about 2.2 K Hz or thereabouts. Hearing sensitivity should be centered on about that frequency. Also consider the range of human voice: about middle C (~260 Hz) and up three octaves to about 2.1k Hz. Piano scale runs about 30 Hz to about 10k Hz. Because of the logarithmic nature of hearing, human perception is remarkably skewed to the bottom end of the scale, numerically.
Stu
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- Usually inverting the polarity - unclestu52 01:36:44 08/01/07 (15)
- RE: Usually inverting the polarity - rick_m 07:58:41 08/01/07 (14)
- See how "they" have been messing with you? Just as with polarity! nt - clarkjohnsen 10:17:21 08/01/07 (13)
- Still waiting to know who "they" are.... -nt - rick_m 11:56:28 08/02/07 (5)
- "They" are Them; haven't you seen the movie? nt - clarkjohnsen 12:00:03 08/02/07 (4)
- I'm confused. I thought "Them" was Van Morrison's old band? -nt - Posy Rorer 22:05:26 08/02/07 (1)
- Them too. nt - clarkjohnsen 07:26:25 08/03/07 (0)
- RE: "They" are Them; haven't you seen the movie? nt - rick_m 13:10:05 08/02/07 (1)
- It's a wretched movie indeed, but highly informative. I'm with you on The Simpsons. In fact... - clarkjohnsen 07:20:48 08/03/07 (0)
- Actually, I don't see... - rick_m 11:33:23 08/01/07 (6)
- Question: Do the "speaker guys" ever tell us that they're selling phase incoherencers? - clarkjohnsen 11:41:59 08/01/07 (5)
- RE: Question: Do the "speaker guys" ever tell us that they're selling phase incoherencers? - rick_m 13:50:21 08/01/07 (4)
- What you say, was already well-known back in the Seventies and Eighties. - clarkjohnsen 08:43:08 08/02/07 (3)
- What WASN'T covered in 'The Wood Effect'? - rick_m 10:11:00 08/02/07 (2)
- Answer: What WAS, was anything and everything to do with polarity. - clarkjohnsen 10:34:21 08/02/07 (1)
- LOL!!!!! - unclestu52 15:02:22 09/16/07 (0)