My interpretation of my experiences and reading of psychology of memory, consciousness, psychoacoustics is that these “audio epiphanies” are rare, random, fortuitous alignments of recording technique, reproduction chain (with near total dominance of loudspeaker and room) and our detailed and transient mental state at that exact time of the “wow” listening experience
I don’t believe any magic pre/amp electronic circuit can give these “realistic” experiences with any reliability
Even trying to repeat the experience with the exact same system, recording may fail due to our changed physical, mental state, expectation of the experience from memory, even the changed “focus” of attention to our trying to hear it “the same”
I don’t believe any magic pre/amp electronic circuit can give these “realistic” experiences with any reliability
Even trying to repeat the experience with the exact same system, recording may fail due to our changed physical, mental state, expectation of the experience from memory, even the changed “focus” of attention to our trying to hear it “the same”
would post 21597 suggest otherwise?
http://www.diyaudio.com/forums/anal...rch-preamplifier-part-ii-432.html#post2957712
i'd figure that your 'location'
might be causing some degree of apprehension.
no doubt you're aware of the most common
'entertainment industry product'
made in,
'the valley'.
disclamer -
j/k
Any practical application of Fourier representation has definite limited accuracy. Ask persons who developed simulation software to specify accuracy of these tools at definite model cases, and they will find that answering this question is much more difficult than producing the software itself.
Sources of inaccuracies come from both non-periodicity of limited audio waveforms, and from limited accuracy of any numerical calculations.
I would not be sure that all tiny audio artefacts are not hidden by simulation inaccuracies.
Extended and Arbitrary Precision Arithmetics are available to anyone today. No big deal to extend your favorite C-compiler with a library that can handle, say, "quad doubles", as an example good enough to do one zillion cycles of FFT and IFFT back and forth, on 24-bit audio data with no loss of precision.
Mr. jcx
You are spoiling the party.
You see, there is a market tile to be fueled and a magical mystery to be retained, the High Priest * of the coven communicating on his discretion the ingredients to the good-willed ritual participants .
Consecrated ceremonial accessories, athames and kerfans are in order.
* “The High Priest serves at the pleasure of the High Priestess”
George
Ah the wisdom of the Beast...
1. As basis, a mass of useless disconnected facts.
2. A superstructure of lies.
The TC is usually related to the control over the exact composition. 40yr ago we had a wizard who formulated the thin film targets and could predict the TC to several ppm.
Could you provide an audio related example of the later? Influence of noise on what?
You should use a fast IR camera to map the temperature of a resistor at 1kHz excitation, you will probably find much less 1kHz component than you think. What's not so good about the Vishay, -170dB ninth??, you will have to work harder to convince me that is not an artifact.
Last edited:
I would suggest to think over the fact, that all of us tend to use super pure copper or silver wires at assembling of an amp. If impurities matter, one could imply that they act in a fuzzy manner.
So, why should not we care which materials a resistor consists of ? What are it's vibro-electric properties ? What are it's own self-resonant frequencies?
During measurements of big size resistors, I observed some strange fluctuations of the impedance modulus over the frequencies range.
Such kind of resistor properties will be especially important at NFB divider position, since reaction of GNFB must be as fast and precise as it is theoretically possible.
Last edited:
Much more interesting to do this with 1000+1001Hz excitation, and change the difference frequency. Remember that it is element temperature which matters, not case or core temp. Remember, we are looking for something which does not show up in conventional harmonic (or IM?) measurements yet appears to damage music. Close-spaced IM would fit the bill.
I have been accused of being a 'guru' for decades. I am supposed to be able to effect, either positively or negatively, individuals both relatively close or far away, as to the 'sound quality' of one of my designs. Yet, I cannot control which way they are going to decide. If only I could control their polarity.
Now, a real 'guru' is Ram Dass, I've seen him in action. Of course, you would not believe me about that, either.
I am now 70 years old, and how long do I have left? Should I close my input and 'laugh' at the failure of many others to be as 'successful' as I have been? Perhaps.
Now, a real 'guru' is Ram Dass, I've seen him in action. Of course, you would not believe me about that, either.
I am now 70 years old, and how long do I have left? Should I close my input and 'laugh' at the failure of many others to be as 'successful' as I have been? Perhaps.
Last edited:
Hi,
Well, the bottom line is that resistors introduce distortion that is measurable and may have effects that are are audible and not measurable.
To take a "completely imaginary" example.
We take a resistor with magnetic parts and on the PCB we have nearby a trace carrying high signal currents (of course this would never happen). Maybe the feedback resistor... Now change the resistor to a non-magnetic one...
There are many effects here that when combined with slightly careless layout can be significant...
Ciao T
Well, the bottom line is that resistors introduce distortion that is measurable and may have effects that are are audible and not measurable.
To take a "completely imaginary" example.
We take a resistor with magnetic parts and on the PCB we have nearby a trace carrying high signal currents (of course this would never happen). Maybe the feedback resistor... Now change the resistor to a non-magnetic one...
There are many effects here that when combined with slightly careless layout can be significant...
Ciao T
But that would be completely measurable if the nearby currents are inducing an unwanted signal into the resistor.
What is meant by "not" in this context? To say that something is audible but does not map to any possible measurement of the soundfield at the ears does not work for me.
- Status
- Not open for further replies.