|
Search of All Forums Enter your search criteria. Click here for tips on using our search |
For Sale Ads |
1: Digital Drive, RE: That clears up a lot! (0.00)
Posted by EBradMeyer on 2009-09-05, 14:02:04 (70.105.241.196)
"There's also a chance that the wooden bodied amp did in fact sound warmer, but the limitations of ABX testing failed to detect this, or rather the limitations of listeners to discern differences in A .......
2: Digital Drive, RE: That clears up a lot! (0.00)
Posted by EBradMeyer on 2009-09-04, 02:52:30 (70.105.241.85)
"Agreed. There will be no agreement. Our world views, if not tastes in music, are simply too divergent." Maybe so, but just so you know... There was an amplifier comparison published about 15 years ag .......
3: Digital Drive, RE: That clears up a lot! (0.00)
Posted by EBradMeyer on 2009-09-03, 15:10:27 (70.105.243.31)
Okay, this is fast becoming pointless, IMHO. You keep insisting that our work was useless if we didn’t make our subjects do enough trials to prove to a 95% confidence level they weren’t hearing anythi .......
4: Digital Drive, RE: That clears up a lot! (0.00)
Posted by EBradMeyer on 2009-09-03, 03:29:26 (70.105.244.246)
Tony: You claim to know great deal about ABX tests for someone with no experience whatsoever. Let’s start with the math. Please discuss this with a statistician you trust. It’s perfectly possible to .......
5: Digital Drive, RE: That clears up a lot! (0.00)
Posted by EBradMeyer on 2009-09-02, 06:47:03 (71.241.221.49)
Thank you for again providing the link to Kunchur's work. I will comment on that after I've read stuff there. Your assertion that null results "prove nothing" puts you in the audiophile camp, I think .......
6: Digital Drive, RE: That clears up a lot! (0.00)
Posted by EBradMeyer on 2009-09-01, 01:48:53 (64.222.202.121)
Tony: Well, now I see what you mean by "calibrated". I'm not going to claim to be a "research scientist" in the sense you use the term, but the technique we used in these experiments is the standard .......
7: Digital Drive, RE: That clears up a lot! (0.00)
Posted by EBradMeyer on 2009-08-31, 15:17:33 (70.105.236.177)
Tony: I would like to know the basis for your statement that "the experimental test setup was not properly calibrated." 'Tain't so. All the accepted protocols for level matching, switching delay, etc. .......
8: Computer Audio Asylum, RE: That clears up a lot! (0.00)
Posted by EBradMeyer on 2008-11-17, 02:15:37 (24.91.216.191)
Tony: Thanks for telling me you had posted this and giving me a chance to reply, since I otherwise wouldn't have seen it. Flattery will get you nowhere. The idea that I, or the tiny, aging and chron .......
9: Propeller Head Plaza, RE: I Guess the Equipment Does Matter...... (0.00)
Posted by EBradMeyer on 2008-11-11, 07:35:18 (75.69.243.49)
This is the one area in which everyone agrees that big differences abound: transducers. Any time you convert one kind of energy to another, there are subjective effects. An around-the-ear headphone is .......
10: Propeller Head Plaza, RE: That clears up a lot! (0.00)
Posted by EBradMeyer on 2008-10-31, 18:06:30 (71.247.145.231)
You need to read the quote carefully. My statement presumes flat response and very low distortion in both units, which is not always true because sometimes response errors are deliberately built into .......
11: Propeller Head Plaza, RE: What doesn't work? (0.00)
Posted by EBradMeyer on 2008-10-31, 06:56:04 (24.91.216.191)
Tony Lauck suggested I pass along some results I got last summer at this point. I'm not sure what these mean, assuming anyone believes them. I took the "six-inch driver playing music-pop" series and m .......
12: Propeller Head Plaza, RE: That clears up a lot! (0.00)
Posted by EBradMeyer on 2008-07-26, 08:42:30 (70.105.234.25)
This post was forwarded to me -- maybe Tony did that, as a courtesy -- but I don't have a lot to say about it as it's just Tony's story of what happened to him. I don't think much good comes from lab .......
13: Hi-Rez Highway, RE: Perhaps you should be using Carver amplifiers... (0.00)
Posted by EBradMeyer on 2008-05-21, 15:30:27 (71.233.247.75)
Tony: It’s good to hear from you directly; you’ve been quoted, at least indirectly, many times before here. The point you make about Clark’s obvious love of music is important to everything anyone he .......
14: Propeller Head Plaza, RE: The BAS and the audibility of the ABX box (0.00)
Posted by EBradMeyer on 2008-03-10, 12:52:46 (71.233.247.75)
The only problem with Clark's story is that it never happened, and no one can tell when an ABX box is in the circuit. The line-level relays are a pure resistance of a couple of tenths of an ohm, in a .......
15: Propeller Head Plaza, RE: "J. Gordon Holt tested the ABX Switchbox and declared it was sonically invisible." (0.00)
Posted by EBradMeyer on 2008-03-10, 11:24:31 (71.233.247.75)
"While members of the Boston Audio Society DB-tested it and found to the vaunted 99% confidence level that its insertion was fully audible" The only problem with that story is that it never happened. .......
16: Propeller Head Plaza, RE: "It won't hold up." (0.00)
Posted by EBradMeyer on 2007-10-23, 12:00:32 (71.233.247.75)
The question of whether CD players have an identifiable sound is irrelevant to the research written up in the paper, which is an attempt to answer a specific question. Here’s a restatement of our ques .......
17: Propeller Head Plaza, RE: That clears up a lot! (0.00)
Posted by EBradMeyer on 2007-10-23, 11:54:46 (71.233.247.75)
Dear Morricab; I appreciate the time and trouble you took in your long and civil post. I think most of the things you are talking about can be summarized in two principal sections. First, regarding e .......
18: Propeller Head Plaza, RE: Your kind invitation (0.00)
Posted by EBradMeyer on 2007-10-23, 08:13:30 (71.233.247.75)
Mr. Christensen; I wish I could come to Copenhagen and do some testing in a good recording studio -- though I did an organ recording in Lyngby in October many years ago, and as I remember it was alrea .......
19: Propeller Head Plaza, RE: That clears up a lot! (0.00)
Posted by EBradMeyer on 2007-10-20, 06:45:50 (71.247.240.112)
"a given CD will sound different when played back on various transports" This is just one of your many assertions that could be proven easily if it were true, but has never been tested by its supporte .......
20: Propeller Head Plaza, RE: That clears up a lot! (0.00)
Posted by EBradMeyer on 2007-10-20, 06:25:07 (71.247.240.112)
Dear Morricab; You say that you have written many technical papers for refereed journals, but you include no citations, so I can’t tell whether you are the principal author or even identify what field .......
21: Propeller Head Plaza, RE: That clears up a lot! (0.00)
Posted by EBradMeyer on 2007-10-20, 05:33:52 (71.247.240.112)
Dear bjh: Watch it! It's "amok". -- E. Brad .......
22: Propeller Head Plaza, RE: Yes, stick with me and ... (0.00)
Posted by EBradMeyer on 2007-10-17, 03:23:13 (24.63.6.232)
"Yes, stick with me and after maybe 5-6 more addendums you'll have the makings of a respectible [sic] report!" bjh (or whatever your real name is) I need to address one thing at this juncture: I am n .......
23: Propeller Head Plaza, RE: A few observations (and the same conclusion)... (0.00)
Posted by EBradMeyer on 2007-10-16, 15:51:57 (71.233.247.75)
bjh; Well, that was pretty snarky, but we should probably compile those numbers anyway. When we do I'll put it on the BAS web site and post another link to it here. -- E. Brad .......
24: Propeller Head Plaza, RE: "...folks are a lot more convinced by what they experience than by what they read." (0.00)
Posted by EBradMeyer on 2007-10-16, 15:41:30 (71.233.247.75)
"JA's response (in thread below on this forum) to my question regarding his positive reaction to a Belt product demo at the Hi Fi Show 1987 (which he now disavows): "Not so much conned, but led by my .......
25: Propeller Head Plaza, RE: Dither anyone? [nt] (0.00)
Posted by EBradMeyer on 2007-10-16, 15:30:21 (71.233.247.75)
Mr. Kreiger: Nice graphics! And an elegantly succinct illustration of what dither does. I didn't know you could paste that stuff in messages. This software has many cool features. -- E. Brad ::: TOP .......
26: Propeller Head Plaza, RE: I read it just fine (0.00)
Posted by EBradMeyer on 2007-10-16, 15:24:51 (71.233.247.75)
Excuse me, but there was no "glaring problem" with the Pioneer. Though we could hear a bit of nonlinearity at *extremely* low levels in one channel, it sounded fine on music at normal levels. If it ha .......
27: Propeller Head Plaza, RE: What is it that you are trying to say? (0.00)
Posted by EBradMeyer on 2007-10-16, 15:13:01 (71.233.247.75)
TL: I much appreciate your acute and succinct analysis. Thanks. -- E. Brad .......
28: Propeller Head Plaza, RE: Here's one more issue to consider.... (0.00)
Posted by EBradMeyer on 2007-10-16, 15:08:40 (71.233.247.75)
Good question. The usual standard that is applied to these tests of raw audibility is the 95% criterion. This means there is less than a 5% chance that a set of answers arose by chance. We asked all .......
29: Propeller Head Plaza, RE: A few observations (and the same conclusion)... (0.00)
Posted by EBradMeyer on 2007-10-16, 14:56:14 (71.233.247.75)
Dear bjh; Your objection to our paper seems fairly typical of the response of a certain group of posters here, so I’ll answer it in detail and let this stand for the rest. The “woeful lack of detail” .......
30: Propeller Head Plaza, RE: Three basics of blind tests ... Did this experiment get the basics right? ... Please tell me ( I don't (0.00)
Posted by EBradMeyer on 2007-10-16, 14:54:41 (71.233.247.75)
Mr. Bass Nut; Thanks for your reply. I agree with almost all of your take on blind testing. The original ABX box was designed to test differences that its makers heard, but wanted to check. Some of th .......
31: Propeller Head Plaza, RE: Please respond to this old post (0.00)
Posted by EBradMeyer on 2007-10-16, 14:49:49 (71.233.247.75)
Ole; I appreciate your experience in audio, and I remember Poul Ladegaard from my days at Bolt Beranek and Newman, where we used Bruel and Kjaer equipment for lots of measurements. It is certainly ve .......
32: Propeller Head Plaza, Hi-Res experimental details (0.00)
Posted by EBradMeyer on 2007-10-12, 13:10:32 (71.233.247.75)
A number of posters on this section of the forum have asked for further details of the experiments David Moran and I ran and analyzed for our JAES paper, "Audibility of a CD-Standard A/D/A Loop Insert .......
33: Propeller Head Plaza, RE: No pain, no gain! (0.00)
Posted by EBradMeyer on 2007-09-27, 07:40:47 (71.233.247.75)
Axon: Well, you were following the evidence, like a good experimenter. Of course that way is often tiresome and annoying. If your blind test method gives you the answer after each trial, then there is .......
34: Propeller Head Plaza, RE: You're correct etc. (0.00)
Posted by EBradMeyer on 2007-09-26, 07:32:26 (71.233.247.75)
TSP: Thanks. It's hard not to try, whatever the odds. An eon ago we lived in the same house, and at some well-chosen times, he was a true and good friend. -- E. Brad .......
35: Propeller Head Plaza, RE: I hope your conclusions are sounder than your perception of who I am. (0.00)
Posted by EBradMeyer on 2007-09-25, 12:30:49 (71.233.247.75)
"I hope your conclusions are sounder than your perception of who I am." Ha! Me too. Sorry about that. Still, I'm sure your position, whatever it is, is sufficiently eminent to merit your following my .......
36: Propeller Head Plaza, RE: That clears up a lot! (0.00)
Posted by EBradMeyer on 2007-09-25, 12:22:42 (71.233.247.75)
Steve: Sorry to be slow to answer. Yes, I used to be a sysop on the old Compuserve Consumer Electronics Forum. That was an interesting time, especially when flame wars erupted that referred to stuff I .......
37: Propeller Head Plaza, RE: Couple of issues occur to me. (0.00)
Posted by EBradMeyer on 2007-09-25, 12:01:28 (71.233.247.75)
Hello, David. I've read your stuff with interest for some time now. The points you raise are relevant, I think; in the tests of high-bit versus CD-quality audio (co-authored with David Moran and publ .......
38: Propeller Head Plaza, RE: A pharmacist's perspective (0.00)
Posted by EBradMeyer on 2007-09-25, 11:46:26 (71.233.247.75)
RW: A belated thanks for the info from the pharmaceutical world. The general principles seem to be applicable everywhere, and any result should be applied with caution to new and possibly different si .......
39: Propeller Head Plaza, RE: You underestimate the thickness of my skull (0.00)
Posted by EBradMeyer on 2007-09-25, 11:33:53 (71.233.247.75)
"I did everything with "Hamburger Train". Once I found that one sample I was too scared of failure to hunt down any other reproducible sample. I figured that just getting a positive result out of a si .......
40: Propeller Head Plaza, RE: "It's not up to me, etc." (0.00)
Posted by EBradMeyer on 2007-09-25, 11:28:48 (71.233.247.75)
Clark; Here is my original proposal to you, since you claim not to know about it, quoted from my message to you of last weekend: "I’ll make a bit-for-bit copy of a CD – your choice – on a CD-R. I’ll s .......
41: Propeller Head Plaza, RE: Complettely OT - ABXing absolute polarity (0.00)
Posted by EBradMeyer on 2007-09-25, 01:33:16 (24.63.6.232)
Yeah, by the time you got 10/10 your results were pretty solid, since the chances of that happening randomly are less than 1 in 1000. The advantage of using headphones like those, which seal in the ea .......
42: Propeller Head Plaza, RE: "I give you The Church of the Latter Day Saints." So that's what it's going to be, is it? (0.00)
Posted by EBradMeyer on 2007-09-24, 14:18:08 (71.233.247.75)
Oh, yeah. I almost forgot: RCJ: "I simply drew attention to the *fact* that a wide variety of sonic results is available off any given CD depending on the player, and I asked for enlightenment on wher .......
43: Propeller Head Plaza, RE: "I give you The Church of the Latter Day Saints." So that's what it's going to be, is it? (0.00)
Posted by EBradMeyer on 2007-09-24, 13:53:30 (71.233.247.75)
[Meyer claims reviewers can't hear CD player differences] "You got proof for that assertion? Preferably, DBTs published in a (this time) reputable journal? Put 'em up! Or..." It's not up to me to prov .......
44: Propeller Head Plaza, RE: That clears up a lot! (0.00)
Posted by EBradMeyer on 2007-09-24, 13:31:28 (71.233.247.75)
Okay, okay . I should have known better than to cast aspersions on ESLs around here. Yes, many of them can play loud enough for me, but a peak level of 115 dB SPL at the monitoring chair does not, I' .......
45: Propeller Head Plaza, RE: Boston Audio Society Strikes Again! (0.00)
Posted by EBradMeyer on 2007-09-24, 01:46:48 (24.63.6.232)
Atkinson wrote: "Don't let it be forgotten that E. Brad Meyer was doing blind tests at AES Conventions in the early 1990s to "prove" that TDK's latest cassette tape formulation produced recordings th .......
46: Propeller Head Plaza, RE: Wha? The player was Pioneer? That wasn't in the paper. (0.00)
Posted by EBradMeyer on 2007-09-24, 01:00:38 (24.63.6.232)
For the record: (1) The Pioneer player mentioned on the BAS site was used for a few early tests. It certainly did have a lower noise floor than the CD link and clearly revealed this by being readily .......
47: Propeller Head Plaza, RE: That clears up a lot! (0.00)
Posted by EBradMeyer on 2007-09-23, 10:19:54 (70.105.235.20)
"I’ll bet no attention whatsoever was devoted to low-level resolution and dynamics; whenever one hears talk about “dynamic range” it’s only about how loud something can go, never how well it can revea .......
48: Propeller Head Plaza, RE: That clears up a lot! (0.00)
Posted by EBradMeyer on 2007-09-23, 07:01:54 (70.105.232.127)
“…there's an immense body of uncontradicted evidence… that CD-Rs made from Redbook CDs sound quite a lot better. That raises the vexing issue, Which is the real CD?... "Anecdotal", you say? But what's .......
49: Propeller Head Plaza, RE: That clears up a lot! (0.00)
Posted by EBradMeyer on 2007-09-23, 06:06:47 (70.105.232.127)
"You're reasoning with a lynch mob." Well, when anyone decides the paper is no good without reading it, I have to agree there's no point in arguing with that person. We tried to present the data nece .......
50: Propeller Head Plaza, RE: That clears up a lot! (0.00)
Posted by EBradMeyer on 2007-09-22, 05:08:50 (71.241.217.117)
"a memeber [sic] here reported after reading the full report that "... the test description and analysis is surprisingly thin. No equipment readout, no results breakdown by listener or location or wha .......
51: Propeller Head Plaza, RE: That clears up a lot! (0.00)
Posted by EBradMeyer on 2007-09-21, 21:35:54 (71.241.210.78)
Thanks for the note. I don't know what else the Carver amp was or wasn't doing. The Audio Research output Z may well have been non-flat or otherwise complex itself. The speaker was an Infinity, expens .......
52: Propeller Head Plaza, RE: That clears up a lot! (0.00)
Posted by EBradMeyer on 2007-09-21, 21:29:27 (71.241.210.78)
Thanks. I'm very glad to know that article has made its way onto the net. I kind of hoped it would generate some interest, at least among those who were arguing about whether power amps ever sounded p .......
53: Propeller Head Plaza, RE: That clears up a lot! (0.00)
Posted by EBradMeyer on 2007-09-21, 21:24:25 (71.241.210.78)
"What they did was run a hi-rez recording through some sort of digital "bottleneck" -- totally unspecified -- and then infer conclusions about CD." We reached conclusions about the CD because, as the .......
54: Propeller Head Plaza, RE: That clears up a lot! (0.00)
Posted by EBradMeyer on 2007-09-21, 21:02:43 (71.241.210.78)
"It was quite modestly meant as a mockery of the kind of mentality that gets people to jump at the chance of launching a 258-post onslaught on an article that no more than one person has read." Now T .......
55: Propeller Head Plaza, RE: That clears up a lot! (0.00)
Posted by EBradMeyer on 2007-09-21, 20:37:38 (71.241.210.78)
"many mistakenly mistook the study as a scientific investigation" I'm not sure whether you're deliberately misunderstanding the situation, just to be provocative. If so, I shouldn't dignify your post .......
56: Propeller Head Plaza, RE: A Challenge To Measurements & DBT Proponents (0.00)
Posted by EBradMeyer on 2007-09-21, 06:45:24 (71.233.247.75)
Dear Tube Guy; Only in audio would anyone think to ask that someone prove the "validity" of double-blind testing, or entertain the bizarre notion that hiding the identity of a source somehow deafens t .......
57: Propeller Head Plaza, RE: What a pity. What a ditty. (0.00)
Posted by EBradMeyer on 2007-09-21, 06:25:34 (71.233.247.75)
Um... I'm not sure quite what *all* of this means, but it looks as though you may, in the course of writing it, have called me "young". If that's true -- THANKS! It's been a long time since anyone mi .......
58: Propeller Head Plaza, RE: A contrary test result (0.00)
Posted by EBradMeyer on 2007-09-20, 08:23:37 (71.233.247.75)
Truthseeker: Thanks for the advice. Whatever the magazine *per se* may do, I have had at least a nodding acquaintance with John A. over the years, and wanted to give him, or anyone else reading over o .......
59: Propeller Head Plaza, RE: Boston Audio Society Strikes Again! (0.00)
Posted by EBradMeyer on 2007-09-20, 08:13:29 (71.233.247.75)
Mr. Hansen; I respectfully suggest that you and anyone else who cares to comment on our paper actually read it first. We sought diligently for source material, playback systems, and/or subjects to tu .......
60: Propeller Head Plaza, RE: A contrary test result (0.00)
Posted by EBradMeyer on 2007-09-20, 07:32:32 (71.233.247.75)
John: I've read the non-refereed preprint you refer to. Though many of their methods are interesting and they went to a lot of trouble, I don't believe the data support the authors' conclusions. They .......
Found total of 60 records, Query: , Author: EBradMeyer in All Forums, Time: 0 sec.