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Forum: Audio theory, Setup and Chat   07-05-2014, 05:56 PM
Replies: 1,933
Views: 38,627
Posted By mcnarus
I took the AVR manufacturers to task for far...

I took the AVR manufacturers to task for far worse performance on HDMI versus S/PDIF. What was the reaction from you all? Was it appreciated? Not at all.

Is that your problem, Amir? That no one...
Forum: Audio theory, Setup and Chat   07-03-2014, 01:14 PM
Replies: 134
Views: 4,952
Posted By mcnarus
You don't do if five times in a row -- you...

You don't do if five times in a row -- you transpose A and B once and then use that transposition during the test.

ABX tests don't work that way. A unit isn't A or B until you connect it, and then...
Forum: Audio theory, Setup and Chat   07-02-2014, 07:24 AM
Replies: 134
Views: 4,952
Posted By mcnarus
The 0% case can just as easily be explained by...

The 0% case can just as easily be explained by transposing the two versions in his mind and simply not re-checking. That is, say he listens to A and B and notes their differences. He then goes...
Forum: Audio theory, Setup and Chat   07-01-2014, 06:49 PM
Replies: 134
Views: 4,952
Posted By mcnarus
(quote)Surely you are not saying that randomly...

(quote)Surely you are not saying that randomly guessing with two choices would differentiate between 0% and 100%? Since ABX Tester has five A/B tests, his likelihood of choosing all right is 3.125%...
Forum: 2 Channel Audio   07-01-2014, 06:42 PM
Replies: 35
Views: 1,188
Posted By mcnarus
Have you heard that system yourself? If not, you...

Have you heard that system yourself? If not, you are making a mistake.
Forum: Audio theory, Setup and Chat   06-20-2014, 02:40 PM
Replies: 1,933
Views: 38,627
Posted By mcnarus
It sounds like you tried to do the best you could...

It sounds like you tried to do the best you could given the equipment you had and what you knew at the time. That's understandable.

But we are all older and wiser now, and we (and I suspect you)...
Forum: Audio theory, Setup and Chat   06-18-2014, 07:04 PM
Replies: 29
Views: 3,427
Posted By mcnarus
It often seemed to me that whenever a prevailing...

It often seemed to me that whenever a prevailing idea about audio emerged in audiophile publications such as The Absolute Sound and Stereophile, Tom would concoct a blind listening test with the...
Forum: Audio theory, Setup and Chat   06-16-2014, 06:18 PM
Replies: 231
Views: 7,647
Posted By mcnarus
]By three sources I meant individual input...

]By three sources I meant individual input envelopes from a source. Voice, piano, guitar, drums, keyboard. Even an organ/keyboard uses more than one single note to achieve the tone desired. Many...
Forum: Audio theory, Setup and Chat   06-16-2014, 03:05 PM
Replies: 231
Views: 7,647
Posted By mcnarus
Perhaps you ought to think for a moment about how...

Perhaps you ought to think for a moment about how all those notes are captured by a microphone diaphragm and travel down a microphone cable.

Long before it hits the ADC, the "music" is just a...
Forum: 2 Channel Audio   06-16-2014, 02:37 PM
Replies: 7
Views: 439
Posted By mcnarus
Given your budget, your best option would be a...

Given your budget, your best option would be a pair of powered speakers (aka computer speakers) connected to the audio out port of your computer. I can't recommend any in particular, because I don't...
Forum: Audio theory, Setup and Chat   06-15-2014, 02:27 PM
Replies: 12
Views: 609
Posted By mcnarus
I discovered Tom when I discovered...

I discovered Tom when I discovered rec.audio.high-end. He and Arny and JJ and a few others would tag-team whatever subjectivist dared stick his neck out over there. Great fun, and highly educational....
Forum: CD Players & Dedicated Music Transports   06-12-2014, 07:04 PM
Replies: 100
Views: 2,594
Posted By mcnarus
I suspect they like being associated with the...

I suspect they like being associated with the high end.
Forum: Audio theory, Setup and Chat   06-12-2014, 06:12 PM
Replies: 1,933
Views: 38,627
Posted By mcnarus
It's simple. We're not trying to hoodwink...

It's simple. We're not trying to hoodwink customers.



You are twisting facts to serve your commercial interests. And you aren't fooling anyone.
Forum: Audio theory, Setup and Chat   06-10-2014, 08:16 AM
Replies: 1,933
Views: 38,627
Posted By mcnarus
Quote:(sigh) Another few hours pi$$ed away...

Quote:(sigh) Another few hours pi$$ed away dealing with distractions that no reasonably well informed person acting in good will would introduce.

That's the nub of it right there.
Forum: Audio theory, Setup and Chat   06-07-2014, 01:58 PM
Replies: 120
Views: 3,127
Posted By mcnarus
Quote:You many have noted that this is a triple...

Quote:You many have noted that this is a triple blind 'x' factor test - 3-amps, A = amp one, B = Amp two, but C = randomly equals either Amp, one, two or three.

"Double blind" does not refer to...
Forum: 2 Channel Audio   06-06-2014, 07:46 AM
Replies: 636
Views: 34,014
Posted By mcnarus
Please stop feeding the trolls.

Please stop feeding the trolls.
Forum: 2 Channel Audio   06-05-2014, 06:01 PM
Replies: 636
Views: 34,014
Posted By mcnarus
Quote:Agree I don't know the science behind it...

Quote:Agree I don't know the science behind it you might however but there were many times over the years and I played the same exact music without moving the loudness attenuator or otherwise...
Forum: 2 Channel Audio   06-05-2014, 01:48 PM
Replies: 636
Views: 34,014
Posted By mcnarus
Quote:My only point is that mood and one's...

Quote:My only point is that mood and one's surroundings can effect one's perceptions.

Yes they can, which is why you can't compare an amp you hear today to one you heard yesterday. You don't know...
Forum: Audio theory, Setup and Chat   06-03-2014, 01:49 PM
Replies: 120
Views: 3,127
Posted By mcnarus
Quote:Which is the problem with forced choice...

Quote:Which is the problem with forced choice blind tests.

And drug trials.
Forum: Audio theory, Setup and Chat   06-03-2014, 10:50 AM
Replies: 120
Views: 3,127
Posted By mcnarus
Quote:Thanks for mentioning that. It raises the...

Quote:Thanks for mentioning that. It raises the other main question I have about analyzing results of listening tests involving small numbers of people. For a sample size of 25 listeners, how high...
Forum: Audio theory, Setup and Chat   06-03-2014, 06:46 AM
Replies: 120
Views: 3,127
Posted By mcnarus
A note on the statistics: If you test 25...

A note on the statistics: If you test 25 subjects, 12 trials apiece, there is an almost even chance that someone will get a statistically significant score by pure dumb luck. So you can't assume...
Forum: Audio theory, Setup and Chat   06-01-2014, 06:36 PM
Replies: 1,933
Views: 38,627
Posted By mcnarus
Quote:IMHO a one speaker setup can assist a null...

Quote:IMHO a one speaker setup can assist a null outcome as it removes the soundstage aspect to music reproduction, which I’ve found can be a differentiator between amplifiers.

I think you fail...
Forum: Audio theory, Setup and Chat   05-30-2014, 03:59 PM
Replies: 120
Views: 3,127
Posted By mcnarus
A couple of points about training: 1) If...

A couple of points about training:

1) If someone claims to be able to distinguish between two amps, he is claiming that he does not need training. That claim can be tested. But the only thing...
Forum: Audio theory, Setup and Chat   05-30-2014, 03:48 PM
Replies: 120
Views: 3,127
Posted By mcnarus
Quote:The negative control should be easy to...

Quote:The negative control should be easy to implement in an ABX test, and I'm glad to hear you confirm that it was always done. I pointed it out, not to educate you, but hoping that the OP includes...
Forum: 2 Channel Audio   05-30-2014, 09:30 AM
Replies: 77
Views: 4,303
Posted By mcnarus
Quote:But I wonder if the DAC in the AVR would...

Quote:But I wonder if the DAC in the AVR would actually be used since the signal is not digital anyway - or am I over thinking this? I mean it would be an analog signal coming from an external DAC...
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