http://www.empiricalaudio.com/
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harmonic
harmonic's Profile: http://forums.slimdevices.com/member.php?userid=6879
View this thread: http://forums.slimdevices.com/showthread.php?t=54015
DeVerm wrote:
DCtoDaylight;351968 Wrote:
Look at it this way, everybody has taken an aspirin at some point in
their life, but one pill won't reduce your risk of stroke. Low
dosages, over a long time, will. So a short term ABX test would
produce one result, a long term ABX would produce
Have you had time to try out the USB input on the Dacmagic and, if so,
could you please share your impressions? I'm interested in how this
will match with a PS3's and PC's USB.
--
bugmenot
bugmenot's Profile:
Phil Leigh;351550 Wrote:
That pretty much nails it for me - sounds like there may be a tiny fault
(probably a bad electrolytic capacitor) on the right channel of the
Numerik output stage. If the popping was on both channels that would
have probably indicated a different problem.
Good
Thanaset;352093 Wrote:
Hi Phil
I hope you get this message. After a long conversation on the phone,
my dealer agreed to send a courier to pick the Numerik up tomorrow. I
had to try really hard to convince him that there is something wrong
with the Numerik. He said he will ask an
pablolie;351985 Wrote:
Are you measuring the right interface given the fact that what you are
trying to explain is the different sound to your ears? Are you really,
*REALLY* sure that that is nthe only interface that has possibly
changed? Are there no other possible interactions between
Phil Leigh;352102 Wrote:
However, while it is away/before they collect it you could try
connecting the SB to the Cyrus via its analogue outputs (removethe
Numerik completely) and see if the popping is still there... that would
indicate a problem in the amp (unlikely).
Thanks for a very
krochat;252228 Wrote:
It looks like we've discussed this before:
http://forums.slimdevices.com/showthread.php?p=199365#post199365
The GW Labs DSP uses a different sample rate converter (a Cirrus Logic
8420) in an all-out design effort. Perhaps if the TacT RCS used a
dedicated linear power
DeVerm;352008 Wrote:
You are right that you have control and can listen to each sample as
long as you want. But that is not the way it is done: samples are
mostly 10-20 seconds long and intervals between two samples are often
0.5-1 second.
Evidence for mostly? I've done quite a few blind
I'm gonna split up in multiple posts a bit because it's just to diverse
to include it all into 1 post;
opaqueice;352132 Wrote:
Evidence for mostly? I've done quite a few blind tests, and some were
done with quick switches, some with long. Same goes with the ones I've
read about - in fact I
musicinmind;250911 Wrote:
My files are primarily 16/44.1 aiff (Apple computer) that I have ripped
from my own cd's. I also have a few hundred hours of 24 bit/48 aiff
files that I've recorded at shows myself with two Neumann U89i's.
Thanks again...
The problem is your rip. Apple
DeVerm;352167 Wrote:
5-30s samples
My conclusion: in audio ABX testing, short 5-30s samples are used. The
reason is that they follow the CCIR recommendations from 1978. I do
believe that you use longer samples but I am referring to large scale
testing incl. the Muraoka et al. 1978;
musicinmind;250913 Wrote:
. . . Audio quality is still significantly inferior to CD transport.
(Parasound CBD-2000 belt drive) . . .
Musicmind,
I too have a Parasound CBD-2000 transport but coupled to a Levinson
No.36 DAC via AES/EBU. I'm also running a SB Receiver via Toslink to
the
opaqueice;352132 Wrote:
Again, you're attacking a straw man. I said nothing of the sort. There
are all sorts of ways in which research can be wrong, and lying is dead
last on the list. It's quite rare - but wrong research is very, very
common.
Well... okay, I'll go with that although you
Wombat;352175 Wrote:
The fact these samples are that short are simply cause of copyright
laws. You can´t post samples longer.
Look at the samples, lots of them are sounds, no commercial song
recordings. Also, the samples used in the Muraoka et al. 1978; Plenge
et al. 1979 studies were so
Has anyone any experience of one of these?
I'd like to use something similar to up the 44.1 out of the SB to 96
for nput to my TACT...
http://www.sonifex.co.uk/redbox/rbsc1_ld.shtml
--
Phil Leigh
You want to see the signal path BEFORE it gets onto a CD/vinyl...it
ain't what you'd call
SORRY double post - please delete
--
Phil Leigh
You want to see the signal path BEFORE it gets onto a CD/vinyl...it
ain't what you'd call minimal...SB3+Stontronics PSU - Altmann
JISCO/UPCI - TACT 2.2X (Linear PSU) + Good Vibrations S/W - MF
Triplethreat(Audiocom full mods)- Linn 5103 - Aktiv
:o(
My thread has been polluted (sob).
Can anyone with a scope and a TACT replicate my findings?
My analogue scope is 60Mhz. Hardly state of the art I know but is its
bandwidth too low to study spdif signals? (should I ever return to the
original question in the thread title!)
Cheers
Phil
--
At least you posted to pages where some of the samples are found by me
myself :)
I offered these short samples cause they were long enough to show
isolated problems with specific mp3 encoders.
And yes, as i remember we used short samples also to avoid fatiguing
when testing more versions against
Wombat;352195 Wrote:
Edit: Sorry Phil for going Off-Topic. Even me that writes seldom here
couldn´t overread the lng posts of these people on their mission.
's okay Wombat - you weren't the first :o)
--
Phil Leigh
You want to see the signal path BEFORE it gets onto a CD/vinyl...it
I will personally stop polluting this thread. After all, I don't care
about convincing anybody about any facts, this was not the point of my
post -it was purely informative. Facts are the same whether some people
believe in them or not, we're all adults, and each one of us has his own
experience
Themis;352208 Wrote:
I will personally stop polluting this thread. After all, I don't care
about convincing anybody about any facts, this was not the point of my
post -it was purely informative. Facts are the same whether some people
believe in them or not, we're all adults, and each one of
Same here, sorry Phil. Will start a separate thread next time and stop
off-topic posts here.
Actually, I have been thinking about your problem. My observation from
your photo's is that the tops from the 5th-7th harmonics are clearly
missing from the square wave. As the fundamental was 1 kHz,
I'm glad that a few people finally got it. Thanks for the input on the
other amps.
I do have another listening area for critical listening. I mentioned
this in this forum because I thought that some of the brighter members
would have an opinion on the amp. Instead a few found it necessary to
DeVerm;352213 Wrote:
Same here, sorry Phil. Will start a separate thread next time and stop
off-topic posts here.
Actually, I have been thinking about your problem. My observation from
your photo's is that the tops from the 5th-7th harmonics are clearly
missing from the square wave. As
DeVerm;352167 Wrote:
Well, I just spent another 30 minutes searching the net for long
samples and I didn't find a single one! So I stick with my statement.
Here is what I find:
snip
My conclusion: in audio ABX testing, short 5-30s samples are used.
You regard an internet search for
Another thought:
Your scope should have a test-square-wave output on the front. It's
analog and you should calibrate your probes on it using the little
adjustment-screw (capacitor).
Also, something that Mr. O observed already
(http://forums.slimdevices.com/showpost.php?p=348946postcount=46) but
opaqueice;352224 Wrote:
You regard an internet search for copyright-constrained ABX samples as
evidence that most ABX testing uses short samples, and from there
conclude that the ABX protocol is invalid? Don't be silly.
It is true that there is evidence that some differences are easier to
Sorry this is not a priority for me right now, but I did just post some
pics
http://forums.slimdevices.com/showthread.php?p=352250#post352250
--
ajmitchell
ajmitchell's Profile:
This thread is a continuation of off-topic posts that started with post
#96 on this page:
http://forums.slimdevices.com/showthread.php?t=53345page=10
It's about the research done in Japan that was published in 2000 of
which you can find a copy here:
opaqueice;352224 Wrote:
You regard an internet search for copyright-constrained ABX samples as
evidence that most ABX testing uses short samples, and from there
conclude that the ABX protocol is invalid? Don't be silly.
continued here:
Hi,
lots of forum-activity recently on some pretty serious topics such as
spdif on a scope, new dac from Cambridge etc. All interesting. On
a, literally lighter, note you might now that the chains, cog wheels,
and levers that will allow us to play back audio on the Controller are
being forged in
You said that :
opaqueice;351963 Wrote:
DeVerm;351942 Wrote:
The document clearly states that Pioneer is the manufacturer and not
Tsutomu Oohashi. Oohashi works for 1) Department of KANSEI Brain
Science, ATR Human Information Processing Research Laboratories, Kyoto;
and 2) Department
Phil Leigh;352232 Wrote:
Mr O - with the greatest of respect (and that is NOT a phrase I use
lightly) - could I beg you to apply your brain power to my question and
to take your discussions on the ABX issue with Nick to another thread.
I need both of your different wisdoms applied to my
bhaagensen;352271 Wrote:
...and please forgive me this post.
I don't even *understand* this post :)
What were you expecting, or hoping for, when you took a photo of the
mini jack?
--
funkstar
funkstar's Profile:
sebp;352273 Wrote:
Could it be simply possible that Mr Oohashi, for this experiment, asked
Pioneer to manufacture speakers according to his specs?
I even suspect that these speakers were never sold at all but just
manufactured for this test. I see that Pioneer does sell speakers that
can
It would be interesting to know what chip it uses for the data rate
conversion. There are only a handful of devices on the market that do
this, unless they've taken in inboard on an FPGA, and I would think you
can draw some broad similarities between products using the same IC's.
--
Hope this moves over to the new thread properly...
DCtoDaylight;351968 Wrote:
Medical ABX tests routinely run for months and sometimes years, in order
to properly evaluate the results. It may not be convenient to do that
with audio gear, but I personally believe that's what's required.
OP wants a mini-jack with toslink, like apple uses. Interesting mod
opportunity I guess, but I fail to imagine any general appeal for that
in a mobile product. This is why it's usually bundled with an SBR.
--
seanadams
But I give you props for creativity. :)
--
seanadams
seanadams's Profile: http://forums.slimdevices.com/member.php?userid=3
View this thread: http://forums.slimdevices.com/showthread.php?t=54078
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