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Old 14th November 2007, 06:14 AM   #31
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Second - recorded at 16bit/44.1kHz
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Old 14th November 2007, 03:42 PM   #32
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Then apply the cascaded rolloff responses of mics, ears and speakers to both curves. Is there a significant difference left between them then?
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Old 14th November 2007, 04:02 PM   #33
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you want to be careful when you say rolloff of the ear.
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Old 14th November 2007, 04:03 PM   #34
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Quote:
Originally posted by bwaslo
Then apply the cascaded rolloff responses of mics, ears and speakers to both curves. Is there a significant difference left between them then?
Everything has already been applied. This is the analog output spectrum.
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Old 14th November 2007, 04:05 PM   #35
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Just to show what is audible. Try the attached file. It contains 3 impulses, in left channel. 1st contains 2 samples. 2nd contains 8 samples. 3rd contains just only one sample. All of them are audible. try your impulse response.
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Old 15th November 2007, 12:16 PM   #36
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Quote:
Just to show what is audible. Try the attached file. It contains 3 impulses, in left channel. 1st contains 2 samples. 2nd contains 8 samples. 3rd contains just only one sample. All of them are audible. try your impulse response.
OK, Here are plots of your 3 'impulses'

-- Time domain (I zoomed in on each and overlayed so detail can be seen:
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Old 15th November 2007, 12:18 PM   #37
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And here are the spectra of the three 'impulses' (frequency domain), overlayed.

1) the wav file is sampled at 44.1kHz
2) the energy at low frequencies is as strong or stronger than at highest frequencies.

Why would you expect any of these to NOT be audible? There is every reason in the world why they should be. I guess I'm not seeing your point.
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Old 15th November 2007, 12:22 PM   #38
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Quote:
Everything has already been applied. This is the analog output spectrum.
Sensitivity curve of ear applied too? Not of my ear, at least! I can't hear ANYTHING at 20kHz at any level I can produce with 100W and a horn tweeter.

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you want to be careful when you say rolloff of the ear.
Why? Do you mean that the ear's sensitivity isn't rolled off at high frequencies??
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Old 15th November 2007, 03:43 PM   #39
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Quote:
South African Broadcasting Corporation - New recording and playback equipment was evaluated for various new studios and listening tests performed on a large number of musicians and conductors during the selection and installation phases. I was one of the technical consultants.
Nico Ras -- Do you have a link on that, or any published results about that? A google search turned up zilch on the subject for me. All controlled studies I've read about seem to have showed quite the opposite, including some differencing tests I've run myself.

I'm not trying to be too skeptical, actually, I'd really like to know about well controlled and highly repeatable tests that show what is claimed (I'd actually like to find evidence contradicting generally accepted ideas about hearing, if there is actual evidence -- rather than only hearsay, anecdotal and testimonial stuff, which are nearly meaningless and easy to get for any position one chooses).

Were the tests at SABC done in a way to verify that only the sound was being evaluated?
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Old 20th November 2007, 07:00 AM   #40
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A colleague of mine has recorded a goblet jingle at 44.1kHz and 192kHz. The difference of reproduced sound is audible. This is my probably last post to this theme. We have done enough experiments confirming that 16/44.1 is unsufficient for high quality recording, and I do not intend to spend much time in useless argueing here.
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