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  »  New  Upper-Sound of Upper-Importance..  Upper-Sound of Upper-Importance...  Audio For Dummies ™  Forum     0  12101  04-04-2005
  »  New  NOhorn channel for “the melody range”...  Curbing the enthusiasm...  Audio Discussions  Forum     10  84626  09-19-2005
  »  New  Adding one more spherical to Macondo...  It is about magnet and SS type....  Horn-Loaded Speakers Forum     92  705855  05-23-2006
  »  New  45Hz Bass Horn..  Can We Ever be Saved From Ourselves?...  Horn-Loaded Speakers Forum     23  237338  09-19-2006
  »  New  How to USE “Resonating Oops” in loudspeakers..  I will do it when I have time....  Horn-Loaded Speakers Forum     183  1040749  02-28-2007
  »  New  The Macondo’s Upper Bass Channel: what is next?..  Görlich again...  Horn-Loaded Speakers Forum     30  197478  10-28-2007
  »  New  Small SET’s bass, besides everything- is it about power..  Importance of OPT and type of tube for SET amp bass per...  Audio Discussions  Forum     4  61984  01-12-2009
09-08-2005 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,543
Joined on 05-28-2004

Post #: 1
Post ID: 1414
Reply to: 1414
The “Primary Frequencies”.

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Within my site I many times stressed the importance of upper bass region for sound reproduction. I always said that with the improperly sounding 200Hz -400Hz any further "fidelity" of Sound becomes imposable. Ironically the 200Hz-400Hz is the most compromised region in audio. The film and electrostats driver are run out of steam at 200Hz -400Hz and have no tension and dynamics in there. The standard 2”-4” compression drivers are already dead at those frequencies. Pretty much only direct radiators, directly or horn loaded, can handle the 200Hz -400Hz more or less appropriately.

Experimenting with prominence of 200Hz -400Hz I found that this is the most important octave and there is no other octaves in auditable range equally important. Interesting that if you audition any single octave with high order band-pass filter then the 200Hz -400Hz would give you the most information about the recorded music. Furthermore, with certain training it is possible to extrapolate the "whole music" out of that single octave....

The explanation why our senses are so developed at 200Hz -400Hz and why the evolution of musical development made the most fundamentals of our musical instruments to live at upperbass is not complicated. The human fetus begins to register and recognize sounds after 16 weeks and at 25 weeks it’s hearing is well developed. Being submerged into womb’ liquids and sitting behind many other mothers’ intestines the fetus not able to hear any other noises then the harmonics of the mother voice. However, the bowels of the mother’s body and the amniotic fluids act as a very high order band-pass filter that killes any other frequencies beside the upper bass. So, we pretty much before out birth are tuned to “get” just  arond 200Hz -400Hz and those frequencies are something the "defines" sound for us. Surly if we were rats or dolphins then our physiology were different and our “primary frequencies” would be different.

Meanwhile, learn to listen the “primary frequencies”. Learn to recognize them in sound and learn to discard any audio that does the 200Hz -400Hz improperly

Rgs,
Romy the Cat


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
09-08-2005 Post does not mapped to Knowledge Tree
clarkjohnsen
Boston, MA, US
Posts 297
Joined on 06-02-2004

Post #: 2
Post ID: 1416
Reply to: 1414
Re: The “Primary Frequencies”.

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Romy wrote: Within my site I many times stressed the importance of upper bass region for sound reproduction. I always said that with the improperly sounding 200Hz -400Hz any further "fidelity" of Sound becomes imposable.

While I do not disagree with that conclusion, I must point out that once again an audiophile has mischaracterized the pitches. Middle C is 256 Hz, high C is twice that -- hence we have what musicians call "the melody range", roughly 200-500 Hz. That ain't bass!

clark
09-08-2005 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,543
Joined on 05-28-2004

Post #: 3
Post ID: 1421
Reply to: 1416
“The melody range!"

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ciproxin

 clarkjohnsen wrote:
Middle C is 256 Hz, high C is twice that -- hence we have what musicians call "the melody range", roughly 200-500 Hz. That ain't bass!
Actually it is. It is what I call upper-bass. The upper bass and bass are totally different animals and they MUST be reproduced by different channel. Also, none of the existing delivers that can handle 200Hz with an octane to spare under the bottom (this is mandatory) can confidently go all the way up. So, we end up with an absolute minimum of 4-channel system…. if you wiling to talk about the truly full range reproduction. Thus, in the 3-ways installations the 200-400 Hz will be most likely handled by a dedicated upper-bass channels and consequentially I call it the upper-bass region….

BTW, I did not know that musicians call it "the melody range" – butt this perfectly makes sense….

Rgs,
Romy the Cat


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
10-25-2005 Post does not mapped to Knowledge Tree
dazzdax
Netherlands
Posts 32
Joined on 10-22-2005

Post #: 4
Post ID: 1571
Reply to: 1421
Re: “The melody range!"
Romy, are you sure the unborn fetus is exposed to sounds in the 200-400 Hz range? I think it's more of 30-200 Hz (conducted sounds of mother's heartbeat and footsteps). I think babies are also sensitive to these range of sound: they sometimes fall into sleep when hearing repetitive sounds in this range. There is a Japanese story about a baby who fell in sleep after hearing the sound of the O-daiko, or the big Japanese drum.

Chris
10-25-2005 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,543
Joined on 05-28-2004

Post #: 5
Post ID: 1572
Reply to: 1571
Fetus and the different reasons.

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 dazzdax wrote:
Romy, are you sure the unborn fetus is exposed to sounds in the 200-400 Hz range? I think it's more of 30-200 Hz (conducted sounds of mother's heartbeat and footsteps). I think babies are also sensitive to these range of sound: they sometimes fall into sleep when hearing repetitive sounds in this range. There is a Japanese story about a baby who fell in sleep after hearing the sound of the O-daiko, or the big Japanese drum.

Nope, it is juts lower midrange and upperbass. It is not my invention by the medical fact. The mother’s interstice act as a band-pass filter, not to mention that fetus is submerges in liquid. The small children and women become sleepy under the influence of very low frequencies because the different reasons…

The Cat


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
02-28-2011 Post does not mapped to Knowledge Tree
haralanov


Bulgaria
Posts 130
Joined on 05-20-2008

Post #: 6
Post ID: 15655
Reply to: 1416
Melody range and the other octaves
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It can be clearly seen the importance of the upperbass octave, which is very smartly called "melody range" :

Tones.jpg



"If you can't explain it simply, you don't understand it well enough." -A.E.
Page 1 of 1 (6 items) Select Pages: 
   Target    Threads for related reading   Most recent post in related threads   Forum  Replies   Views   Started 
  »  New  Upper-Sound of Upper-Importance..  Upper-Sound of Upper-Importance...  Audio For Dummies ™  Forum     0  12101  04-04-2005
  »  New  NOhorn channel for “the melody range”...  Curbing the enthusiasm...  Audio Discussions  Forum     10  84626  09-19-2005
  »  New  Adding one more spherical to Macondo...  It is about magnet and SS type....  Horn-Loaded Speakers Forum     92  705855  05-23-2006
  »  New  45Hz Bass Horn..  Can We Ever be Saved From Ourselves?...  Horn-Loaded Speakers Forum     23  237338  09-19-2006
  »  New  How to USE “Resonating Oops” in loudspeakers..  I will do it when I have time....  Horn-Loaded Speakers Forum     183  1040749  02-28-2007
  »  New  The Macondo’s Upper Bass Channel: what is next?..  Görlich again...  Horn-Loaded Speakers Forum     30  197478  10-28-2007
  »  New  Small SET’s bass, besides everything- is it about power..  Importance of OPT and type of tube for SET amp bass per...  Audio Discussions  Forum     4  61984  01-12-2009
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