In Reply to: "Inaudible" HF sounds found to affect perception of sound posted by clarkjohnsen on August 25, 2003 at 13:47:37:
""These results suggest the existence of a previously unrecognized response to complex sound containing particular types of high frequencies above the audible range. We term this phenomenon the "hypersonic effect."""CJHmmm...
In their study, how did they remove the ultrasonics??
Did they use a filter that changes the hf transient response???
As John Curl has stated, he can hear the diff between a 35Khz filter and a 100Khz one..
Although not having repeated his test, given the ability to discern 20 to 10 uSec timing delays....I see nothing wrong with his statement..I believe him..
So, I ask: how do these researchers know the filter they used did not skew what they are testing for???
Cheers, John
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Follow Ups
- Re: "Inaudible" HF sounds found to affect perception of sound - jneutron 17:33:22 08/27/03 (12)
- even the (double) blind engineer can explain without appeal to "transient resolution" - jcox 19:33:27 08/27/03 (11)
- Re: even the (double) blind engineer can explain without appeal to "transient resolution" - john curl 14:21:03 08/29/03 (6)
- Amplitude variation still seems the simpler explaination - jcox 20:01:34 09/01/03 (1)
- OK Help me out here Brother Curl... - Ivan303 20:24:52 08/29/03 (4)
- Here's my guess... - Charles Hansen 09:10:37 08/30/03 (1)
- That was my guess, as well.. - Ivan303 09:38:29 08/30/03 (0)
- Re: OK Help me out here Brother Curl... - eico1 07:23:12 08/30/03 (1)
- Re: OK Help me out here Brother Curl... - john curl 09:31:41 08/31/03 (0)
- Re: even the (double) blind engineer can explain without appeal to "transient resolution" - jneutron 20:11:54 08/27/03 (3)
- See reference given below - Pat D 19:30:53 08/28/03 (1)
- Excellent..thanks nt. - jneutron 05:34:17 08/29/03 (0)
- Re: even the (double) blind engineer can explain without appeal to "transient resolution" - jcox 21:13:02 08/27/03 (0)