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harmonic_entropy · A list dedicated to the exploration of harmonic entropy models of musical consonance
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Sinusoidal Entropy?   Message List  
Reply | Forward Message #528 of 1055 |
Re: Sinusoidal Entropy?

--- In harmonic_entropy@y..., "Paul H. Erlich" <PERLICH@A...> wrote:

> Waveform has nothing to do with it. Harmonic entropy is the simplest
> possible model of consonance and cannot be regarded as specific to
> any waveform.


> >JG had asked:...what relation does the term "harmonic" have to
> >your "Harmonic Entropy" concept?

> PE:(a) the dyad is compared with intervals in the harmonic series

JG: Of one, the other, or both fundamental frequencies of the two
tones from which the dyad is constructed?

> PE:(b) the dyad is harmonic, not melodic.

JG: Do you mean by this simply that the dyad is (potentially, but not
necessarily) constructed of complex (as opposed to sinusoidal) tones?

>PE:...harmonic partials will lead to the same set of ratio-
>interpretations for the dyad as the bare dyad,
>but with tighter standard deviation because
>
> (a) there will normally be some partials in, or at least closer to,
> the 3000Hz frequency range
>
> (b) the multiplicity of partials will represent several independent
> sources of information for the same ratio-interpretations


JG: Would not (b) directly above imply that - for the equivalence
of "ratio-interpretations" to exist from "several independent sources
of information" (those sources being the individual complex tones
from which the dyad is constructed) - the spectral amplitudes of each
of the overtones of the individual fundamental frequencies of such
individual complex tones must be equivalent. That is - the (steady
state, as well as the transient) frequency spectrums of the (complex)
tones number 1 and number 2 from which the dyad is constructed must
be identical (or nearly identical) in order for your assumption (b)
directly above to be valid?


Curiously, J Gill







Sat Dec 8, 2001 8:46 am

unidala
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Message #528 of 1055 |
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Paul, I believe that you have stated (and please do correct me if I am incorrect in my memory) that "Harmonic Entropy" is applicable to pure tone dyads (such...
J Gill
unidala
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Nov 1, 2001
6:31 am

... Yes -- although the standard deviations typically used would only be applicable to such a case in a certain optimal frequency range, around 3000Hz. ... (a)...
Paul H. Erlich
paulerlich
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Nov 1, 2001
6:57 pm

... JG: Of one, the other, or both fundamental frequencies of the two tones from which the dyad is constructed? ... JG: Do you mean by this simply that the...
unidala
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Dec 8, 2001
8:46 am

... sources ... each ... (complex) ... JG: Additionally, due to the nonlinear amplitude transfer function of perceived loudness levels [shown as approximately...
unidala
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Dec 8, 2001
10:45 am

... I don't understand this question. What I'm trying to say is that, in the harmonic series, one finds certain intervals -- for example, if you go up throught...
Paul H. Erlich
paulerlich
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Dec 10, 2001
7:48 pm

... Again, it would help. If one tone is much louder than the other, then the brain is more likely to disregard the quieter one, and simply use the louder one...
Paul H. Erlich
paulerlich
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Dec 10, 2001
8:07 pm
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