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Interconnect Impact on Electrical Waveform Lab with Results - Page 8

post #106 of 114

For me audibility is determined by a series of ABX tests, nor matter what the test results say.

 

Great effort myinitialsaredac abd thanks for the response beerchug.gif

post #107 of 114
Thread Starter 

 



Quote:
Originally Posted by kwkarth View Post



The purpose of the comment was to indicate that there is no guarantee that you are currently measuring the factors actually responsible for attributed sonic differences.
What is this "high frequency shift" to which you refer?  

 


 

DSC_0048.jpg

 

 

Take a look at the green line and the yellow line and note the deviation. The delta is a shift of the signal at a very high frequency (Mhz range). Ive said it many time that this experiment was to quantify electrical differences and nothing else. 

 

To measure existence of attributed sonic differences is a different experiment and always has been. 

 

So why did I bother with this experiment then? It provides background data that may play a role in explaining whether or not cables provide an audible difference and it demonstrates that there are electrical differences at some frequency that is probably near the bandwidth limit of the cables involved though I am not a transmission line expert or even an EE. 

post #108 of 114

I appreciate your work myself.  Showing consistent behavioral patterns is something to consider for sure.

post #109 of 114
Quote:
Originally Posted by myinitialsaredac View Post

Take a look at the green line and the yellow line and note the deviation. The delta is a shift of the signal at a very high frequency (Mhz range). Ive said it many time that this experiment was to quantify electrical differences and nothing else. 

 

To measure existence of attributed sonic differences is a different experiment and always has been. 

 

So why did I bother with this experiment then? It provides background data that may play a role in explaining whether or not cables provide an audible difference and it demonstrates that there are electrical differences at some frequency that is probably near the bandwidth limit of the cables involved though I am not a transmission line expert or even an EE. 


Hey I never questioned the validity or value of your quest.  I simply wondered why you chose to measure what you did, and not some other parameter?  Given your choice, how convinced are you that you've chosen to measure the specific parameter that is responsible for the differences people hear?

 

post #110 of 114
Thread Starter 
Quote:
Originally Posted by kwkarth View Post




Hey I never questioned the validity or value of your quest.  I simply wondered why you chose to measure what you did, and not some other parameter?  Given your choice, how convinced are you that you've chosen to measure the specific parameter that is responsible for the differences people hear?

 


Not saying you did, but you did ask "What is this "high frequency shift" to which you refer?" so i was just trying to answer that part wink_face.gif

 

Im not convinced at all. It wasnt intended to demonstrate audible differences, only to begin to establish whether or not there are quantifiable differences between cables. In that respect it was successful. 

 

dac

 


Edited by myinitialsaredac - 5/10/11 at 10:17pm
post #111 of 114
Quote:
Originally Posted by myinitialsaredac View Post

Not saying you did, but you did ask "What is this "high frequency shift" to which you refer?" so i was just trying to answer that part wink_face.gif

 

Im not convinced at all. It wasnt intended to demonstrate audible differences, only to begin to establish whether or not there are quantifiable differences between cables. In that respect it was successful. 

 

dac


I still suspect there are yet other quantifiable differences that we haven't learned to measure yet.  Our instrumentation is capable, but we have not looked under the right haystack yet for the right needle.  Good luck!

 

post #112 of 114
Quote:
Originally Posted by kwkarth View Post




I still suspect there are yet other quantifiable differences that we haven't learned to measure yet.  Our instrumentation is capable, but we have not looked under the right haystack yet for the right needle.  Good luck!

 


Good luck with that one and hold on to your dream wink_face.gif

 

post #113 of 114
Quote:
Originally Posted by kwkarth View Post




Hey I never questioned the validity or value of your quest.  I simply wondered why you chose to measure what you did, and not some other parameter?  Given your choice, how convinced are you that you've chosen to measure the specific parameter that is responsible for the differences people claim to hear?

 


Intentional error corrected above. The tests are interesting but I think we really need to look in the audible range. There is no point at all in hypothesising unknown  variables to explain something until you can verify the something in the first place. Since nobody to date has ever passed a DBT between two normal unbroken analog cables there is no something to investigate, yet. If somebody had managed this you could then look at the existing known variables on which the two differed and alter them (one at a time) until you found the variable (or possibly combination) that was responsible. Should you be unable to find an existing variable repsonsible then you can hypothesise, model and test.....but establish a difference before any of this you must do first.


Edited by nick_charles - 5/11/11 at 8:25am
post #114 of 114
Quote:
Originally Posted by nick_charles View Post




Intentional error corrected above. The tests are interesting but I think we really need to look in the audible range. There is no point at all in hypothesising unknown  variables to explain something until you can verify the something in the first place. Since nobody to date has ever passed a DBT between two normal unbroken analog cables there is no something to investigate, yet. If somebody had managed this you could then look at the existing known variables on which the two differed and alter them (one at a time) until you found the variable (or possibly combination) that was responsible. Should you be unable to find an existing variable repsonsible then you can hypothesise, model and test.....but establish a difference before any of this you must do first.

I mostly agree with you Nick.  Right on!  beerchug.gif
 

 

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