omichalis
Date: Fri Aug 13, 2010 8:44 am ((PDT))
being in the edge of human perception (12000-20000 Hz) or near it is one th=
ing and being one or several octaves above it a different..
we are surrounded by such frequencies all the time.. When for example there=
are several bats above your head - and we hear nothing.. neither do we not=
ice other changes in other sources due to the ultrasounds produced by the b=
ats - at least AFAIC - I do not doubt that such frequencies - even higher m=
ight have some effect on humans, but researchers are still on a very elemen=
tary stage here
In any case even if that high overtones are in fact responsible for audible=
effects in the range we can hear - they would be of minor importance compa=
red to all sorts of speaker, subject and space-related phenomena - from har=
monic distortion to reverb tails and the acoustics of each individual ear, =
etc.. So unless you are using PERFECT speakers located in some kind of anec=
hoic chamber and you are interested only in the way you hear things - I don=
' t see any point in getting interested on those artifacts
When of course you are interested in other things - like visualizing or man=
ipulating things digitally - that' s a whole different story
Brass acoustics is whole science on its own.. All the things you mention ha=
ppen in the audible range and are for sure related to various resonances an=
d such phenomena happening inside the tubes. I recall once I found an artic=
le in the internet explain in several pages the various forces and the mech=
anics of multi-phonics and I was completely overwhelmed - these things are =
really complicated..
Once again I' m really skeptical on all these until I find something well-r=
eferenced and documented
something crucial here of course is what are we referring to - acousticians=
, physicists, psycho-acousticians, phenomenologists and our audience will a=
ll have different views and interests on this for sure
m
On 13 =CE=91=CF=85=CE=B3 2010, at 5:52 =CE=BC.=CE=BC., James Shatto wrote:
> A/B of the korg with internal and external preamps would be a little moot=
given the signal to noise ratio differences. 30dB, that's a lot. Althoug=
h probably closer to 2dB with my 28dB noise floor mics (A weighted). And t=
he Korgs internal preamps are known to have a subdued low end (frequency re=
sponse). There's a mod and detailed instructions on how to do that mod. B=
ut I opted for external preamps instead.
>
> I don't know about proof, but as a brass player for 20+ years. There's m=
ultiphonics stuff where you sing a major tenth above the note you buzz with=
your lips on the horn. And the combination of the two (root + 3rd) sounds=
the 5th (BELOW both of those tones). It's not as strong as the other tone=
s, but it's definitely there. If you get a group of like minded brass play=
ers together and play sustained chords. When the group actually gets it in=
tune the upper harmonics start to sound and ring above the actual notes be=
ing played and the dB level of the group goes up a notch. Now whether that=
's fact or just belief, I don't know. But it's certainly evidence of somet=
hing. Could be physics, could be psychology. I know that in the early mid=
i days, the synths that could sound/synth those upper harmonics had the mor=
e realistic sounds. But I haven't dwelled in those circles much for a whil=
e now.
>
> - James
>
> --- On Fri, 8/13/10, Marinos Koutsomichalis <> wrot=
e:
>
> From: Marinos Koutsomichalis <>
> Subject: Re: [Nature Recordists] Another neophyte flailing around on this=
subject...
> To:
> Date: Friday, August 13, 2010, 8:04 AM
>
>
>
> On 13 =CE=91=CF=85=CE=B3 2010, at 2:25 =CE=BC.=CE=BC., James Shatto wrote=
:
>
> > Well in theory the upper harmonics do re-enforce the lower ones, which =
are in the capabilities of a lot of ears
>
> If you have any scientific references on this I' d love to have a look.. =
I might be wrong on this but I believe this is mainly just a myth..
>
> This is a subject already discussed a lot generally - Indeed, when I' m w=
orking in quality studios in high sampling rates and then switch to lower o=
nes, it sometimes seems like I can sense a subtle difference - but I' m not=
really sure if this is actually happening and what would be the real reaso=
n for this..
>
> I guess I can easily figure this out via AB tests and such - it would wor=
th trying at some point..
>
> m
>
>
>
>
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