|
|
|||||||
| Home | Forums | Rules | Articles | Store | Gallery | Blogs | Register | Donations | FAQ | Calendar | Search | Today's Posts | Mark Forums Read | Search |
| Everything Else Anything related to audio / video / electronics etc) BUT remember- we have many new forums where your thread may now fit! .... Parts, Equipment & Tools, Construction Tips, Software Tools...... |
|
Please consider donating to help us continue to serve you.
Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving |
|
|
|
Thread Tools | Search this Thread |
|
|
#1041 |
|
Account disabled at member's request
Join Date: Mar 2007
|
|
|
|
#1042 | |
|
diyAudio Member
Join Date: Jul 2010
Location: London, UK
|
Quote:
The first phase is complete; the lab work. Now we need to move onto the analysis of the data and then peer review. Anyone who does otherwise is guilty of the same type of 'gullible' behavior that SY belittles in the very first post of this thread. Cheers, Dave. |
|
|
|
#1043 | |
|
diyAudio Member
Join Date: Jul 2010
Location: London, UK
|
Quote:
|
|
|
|
#1044 |
|
diyAudio Moderator
|
That's a fair point- I've been rather demotivated because of how... mundane the results were. Here's a few more dribs to chew on. It's been said that the Bybee will reduce noise in a circuit by some sort of "slipstreaming" and "stripping of quantum noise." Putting aside the clear violations of basic thermodynamics, let's see if it actually does.
First, as a baseline, I compare the noise floor of the measurement system with the input shorted to the same system with a 100k resistor across the input. This is in a relatively electrically noisy environment, but still those alarming spikes and other noises are still pretty low.
__________________
“Listening to records is like ****ing a picture of Brigitte Bardot.” - Sergiu Celibidache |
|
|
#1045 |
|
diyAudio Moderator
|
Now let's up the frequency resolution and look at the Bybee in series with the 100k resistor versus a shorted input. Note the scaling change.
__________________
“Listening to records is like ****ing a picture of Brigitte Bardot.” - Sergiu Celibidache |
|
|
#1046 |
|
diyAudio Moderator
|
OK, fine, is the Bybee having an effect? Here's a comparison of the Bybee in series with 100k versus the 50 cent resistor in series with 100k. I show both linear and log plots. If you can see any sort of consistent noise improvement, you're better than I. And, again, if you want to worry about stuff below -150dB and at broadcast frequencies, have at it- it's irrelevant to what's going on in the region where our ears work.
More later.
__________________
“Listening to records is like ****ing a picture of Brigitte Bardot.” - Sergiu Celibidache |
|
|
#1047 |
|
diyAudio Member
Join Date: Jul 2010
Location: London, UK
|
Hey SY,
Thanks for these, I know that we all have been anticipating the results. Just to make sure that we're all on the same page, could you please give us the legend for each graph? I'm assuming that the title of the graph (top-left) represents the order comparisons and black always means the first plot while the purply-pinkly(ish) colour means the second plot. Also, for the sake of transparency, would you be willing to disclose your relationship to Bybee, his distributors and/or any other market competitiors. If you have affiliations (for or against) then it's good to know. If you don't have any then that's even more convincing. Ultimately, this thread is going to come up on google for anyone that searches for Bybee (it ranks #4 already for "bybee quantum purifier"). If the general consensus is that these devices = Snake Oil, then it's important that perspective buyers get as much info as they can about the devices. Similarly, could you please re-summarize your testing platform (measuring equipment, etc, so that it's close to the posted results); maybe a Mod can link, from the first post, to your current one so that googlers don't have to read 1000+ posts to get the Cole's Notes version of this thread? PS - Please note that I wasn't whingeing about you not getting the results in; you've done the lion's share of the work so if it takes you a few more months to document them then so be it. Nor was I questioning your integrity. Last edited by dfidler; 20th December 2010 at 12:02 PM. |
|
|
#1048 |
|
diyAudio Moderator
|
Just to be clear, other than getting paid for a few articles now and then, I have no commercial interests whatever in the audio biz.
For the above spectra, M-Audio 192 sound card. HP computer, some cheap piece of garbage. The quieter spectra are in all cases the shorted input.
__________________
“Listening to records is like ****ing a picture of Brigitte Bardot.” - Sergiu Celibidache |
| Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
| Thread Tools | Search this Thread |
|
|
|
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| Bybee Quantum Purifier Experience. | mrfeedback | Everything Else | 321 | 27th August 2010 09:41 PM |
| diy bybee quantum purifiers? | mbl | Power Supplies | 549 | 16th April 2010 10:38 PM |
| measurement and analysis tools | D_Dubya | Full Range | 12 | 31st May 2008 02:07 PM |
| Info on Bybee Quantum Purifiers needed | Peter Daniel | Everything Else | 59 | 1st April 2003 02:56 PM |
| New To Site? | Need Help? |
| Page generated in 0.12285 seconds (76.66% PHP - 23.34% MySQL) with 11 queries |