Tweakers' Asylum

RE: Green Pen ever formally tested?

76.79.86.51

gusser

In Reply to: RE: Green Pen ever formally tested? posted by geoffkait on June 26, 2023 at 10:17:08

OK, in this example I explained how digital audio is in it's self a measurement process and relatively easy to do highly accurate comparisons.

What did I get wrong?

Follow Ups:

Comparisons - geoffkait 05:21:23 06/27/23 (4)
All you have to do is listen. Where's the beef? If you can't hear the difference on your system who cares about measurements? Not everything that can be measured is audible. There are many variables here. Shall we review them?
- Sure, go ahead (nt) - gusser 09:53:29 06/27/23 (3)
  "Not everything that can be measured is audible."
  So then what's the point of the tweak if the result is not audible?
  
  Edits: 06/27/23
  - Variables - geoffkait 03:54:05 06/28/23 (2)
    Variables for Green Pen listening test (or any audio listening test) - short list
    1. Is the listener actually capable of discerning subtle differences or is he just blowing smoke?
    2. Is the Test system up to snuff? Or is it a mediocre piece of crap?
    3. Are there errors in the test system, is everything broken in and warmed up, correct polarity, etc.?
    3. Did tester follow directions properly, for example is the disc absolutely level during play? Or is the tester all thumbs?
    "Any idiot can get negative results for a controlled blind test." - old audiophile axiom
    
    Edits: 06/28/23 06/28/23
    - RE: Variables - gusser 08:08:48 06/28/23 (1)
      I don't think you understand my proposed test at all.
      1)We are only listening to see if a supporter heard a difference. Then we are doing a binary file compare to the same musical passage with and without any edge treatment. This rules out any human bias.
      2)The quality of the test systems is not highly relevant. Again we are comparing two digitally (SPDIF) captured passages from the same CD player / transport.
      3)We are only concerned with errors from the CD player. These must be weighted as a few random errors are possible but the percentage should be the same in both cases (or not, this is a test).
      4) Andy errors from physical leveling would be the same in both cases, so it can be cancelled out of the final results.
      
      Edits: 06/28/23
      - RE: Variables - geoffkait 08:32:56 06/28/23 (0)
        
        In Reply to: RE: Variables posted by gusser on June 28, 2023 at 08:08:48
        
        Sounds like you would be perfect for that job. Let us know your test procedure and test plan.

Post a Followup:

FAQ

Post a Message!

Forgot Password?

Moniker (Username):
Password (Optional):
	Remember my Moniker & Password (What's this?) Eat Me
E-Mail (Optional):
Subject:

Message:	(Posts are subject to Content Rules)

Optional Link URL:
Optional Link Title:
Optional Image URL:
Upload Image:
E-mail Replies:	Automagically notify you when someone responds.

To view your new posting or follow-up, click on the RELOAD or REFRESH button on your browser.

This post is made possible by the generous support of people like you and our sponsors:

Kimber Kable