scottjoplin,
Voltage is a measure of potential difference between two points in a static field, a property of the medium from which the signal is generated. Voltage becomes senseless when applied to signals. Voltage can`t be used analytically. I reject any predictive analysis (that produces new data like the Fourier Transform).
In a single ended system you have a ground plane as a reference and the potential difference between ground and the input node is modulated over time. If you disagree with that than I would be very interested in an explanation how you define "signal" and how you measure and analyse "signal" if not by (voltage) level and time?
schiirrn,
presumably he has answered your 2nd question yet: He uses his golden ears to analyze a signal.
Best regards!
presumably he has answered your 2nd question yet: He uses his golden ears to analyze a signal.
Best regards!
Wow. Tuff one... and spooky to me!
Please give your definition of an audio electrical signal as this come against 140 years of documented science.
A signal could be defined as an electrical event that conveys some information. Which part of the statement does go against documented science?
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Hi,
Then you say 'an electrical event that convey information'.
Maybe this is a translation issue but... an electrical signal is a voltage or a current... you know, Ohm's law, both side of the same things.
The usual definition of a timbre is : a relation between frequency, phase and amplitude. All this can be decomposed in an infinite number of sinus ( FFT definition to me).
May i ask where have you seen an FFT is a predictive analysis? An analysis yes, predictive i don't get it.
Then you say 'an electrical event that convey information'.
Maybe this is a translation issue but... an electrical signal is a voltage or a current... you know, Ohm's law, both side of the same things.
The usual definition of a timbre is : a relation between frequency, phase and amplitude. All this can be decomposed in an infinite number of sinus ( FFT definition to me).
May i ask where have you seen an FFT is a predictive analysis? An analysis yes, predictive i don't get it.
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Somebody who can not use measurement of voltage for analysis sounds incompetent to me. Further conversation would most likely be unfruitful.
The ubiquitous voltage and current define nothing. As was stated, unlike a descriptive or explanatory analysis, a predictive analysis produces new data.
Hi Indra,
Well there is many ways to see our reality so as long as we do not have more explanation about it i would not say 'incompetent' but... well yes spooky to me.
N101N:
Ok, our message crossed.
You don't give explanation only opinion.
Have you ever looked at simple synthetic waveforms? Like triangle, square and sawtooth? It can clearly be seen that a sawtooth is a mix of half a triangle and half a square. Being a triangle wave being fundemental and even harmonics and that a square is fundemental and odd harmonics a sawtooth is a mix of both...
And by playing with additive synthesis you'll constantly and repeatidly recreate it by adding sinusoide together.
This is no new data, just an analysis.
I'm puzzled. Indra i think you are right... this is more about faith than science, which is fine ( to me at least).
Well there is many ways to see our reality so as long as we do not have more explanation about it i would not say 'incompetent' but... well yes spooky to me.
N101N:
Ok, our message crossed.
You don't give explanation only opinion.
Have you ever looked at simple synthetic waveforms? Like triangle, square and sawtooth? It can clearly be seen that a sawtooth is a mix of half a triangle and half a square. Being a triangle wave being fundemental and even harmonics and that a square is fundemental and odd harmonics a sawtooth is a mix of both...
And by playing with additive synthesis you'll constantly and repeatidly recreate it by adding sinusoide together.
This is no new data, just an analysis.
I'm puzzled. Indra i think you are right... this is more about faith than science, which is fine ( to me at least).
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Yes ok that's fine. Each one its own belief.
But it is not science.
Next step: flat earth.
Thank you for your time, i won't bother you more.
But it is not science.
Next step: flat earth.
Thank you for your time, i won't bother you more.
I have said elsewhere that the Fourier Transform was originally meant as a method for studying the variations in temperature (which is not a signal) through a drastically simplified formalism, all characteristics derived from the linear relationship between amplitude and time. The "signal" is reconstructed from an inherently divergent sequence representing a finite set of uniformly spaced time-samples as an infinite sum of fractions (infinitesimal sinusoids) using a function going by the misleading name of Convergence of Infinite Series. The construction is commonly regarded as a brilliant piece of axiomatic bravura, the only minor foible would be that what it produces is some generalized fancy nonsense.
The Fourier Theorem is fraught with painful conceptual absurdities, logical paradoxes and procedural inconsistencies - to those who mind. Its connection to reality is zero.
The Fourier Theorem is fraught with painful conceptual absurdities, logical paradoxes and procedural inconsistencies - to those who mind. Its connection to reality is zero.
So N101N has lowered his pants. I suspect he's just some troll.
As we come close to talking about colours to a blind man, I'm out also.
Best regards!
As we come close to talking about colours to a blind man, I'm out also.
Best regards!
Ok... so you claim that a FFT is wrong and useless - your claim - your problem - since everyone else get along just fine with this mathematical theory in both practical and theoretical terms.
But what does this has to do with a given claimed sound signature of say the materials an amplifier is build of or the wires in a speaker?
I know some amplifiers have small wooden pieces on some chips... mostly to protect their secret sauce - is my bet 😉
A variation in temperature can very well be a signal. It is for some types of motion detectors. You could also transcode music to a variation of temperature just as can transcode it into a variation of voltage.
No. You just need an entry level physics book. Or a link to wikipedia page describing the concept of "signal".
This goes against your earlier statement. "electrical event" is either a change in voltage potential or current flow. As has been said both interlinked. Without the element of time this is enough to signal a switch between on and off states. For something like music we deal with a change in voltage potential or current flow over time. You know, time, the thing an oscilloscope uses to depict information. Mostly on the x-axis.
Or do you have other definitions or possibilities for "electrical event"?
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