No this thread is not related to the hiss you're hearing. Good job
finding it, though, I looked for this thread a few weeks ago and
couldn't find it!!
The hiss is the noise floor of SB. 2 ideas to help:
1. Use an external volume control like active or passive preamp or
Endler attenuating
Most of this is over my head so can someone tell me if these patches
will in any way effect the high hiss level (noise floor?) I am getting
when I connect my SB3 analog outputs directly to my amplifier?
I am thus using the SB3 also as a preamp.
SB3 - PS-Audio Trio A-100 - BW DM603S3's
If I
Mike Anderson Wrote:
^^^ I should mention that I'm running Windows XP, with an SB2.
I tried downloading the latest nightly, but I can't even get the
firmware upgrade to work. It tells me to hold down the brightness key
to upgrade the fw, but nothing happens when I hold down the brightness
Bump.. Is there any further info on whether the current
slimserver/FW versions now sound as good as 6.2.1/FW15?
--
DSK
DSK's Profile: http://forums.slimdevices.com/member.php?userid=4225
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^^^ I should mention that I'm running Windows XP, with an SB2.
I tried downloading the latest nightly, but I can't even get the
firmware upgrade to work. It tells me to hold down the brightness key
to upgrade the fw, but nothing happens when I hold down the brightness
key.
--
Mike Anderson
^^^ I second that request; I haven't updated in a while because I have a
stable version.
So what's the most recent (and stable) version I should download that
has the volume bug fixed?
Thanks,
Mike
--
Mike Anderson
'FREE RADICAL
RADIO!' (http://nvo.com/cd) Hours of free radical MP3s.
dwc Wrote:
Jon, in the first post in this thread, Sean says the change is in the
firmware. (i.e. not the server code)
Second question, is this change implemented in the 6.2.2 line? If so
in what server/firmware version did the change appear?
Thanks,
Dan
The change to 16.16 floating
jonheal Wrote:
Well, heck, I don't know then!
...I was having a bad night.
But really, I should just stop pretending like I know what I'm talking
about. I'd save myself a lot of trouble.
--
jonheal
Jon Heal says:
Have a nice day!
http://www.theheals.org/
jonheal Wrote:
The algorithm that dithers the volume was changed in 6.2.x
Jon, in the first post in this thread, Sean says the change is in the
firmware. (i.e. not the server code)
Second question, is this change implemented in the 6.2.2 line? If so
in what server/firmware version did the
dwc Wrote:
Jon, in the first post in this thread, Sean says the change is in the
firmware. (i.e. not the server code)
Second question, is this change implemented in the 6.2.2 line? If so
in what server/firmware version did the change appear?
Thanks,
Dan
Well, heck, I don't know then!
crooner Wrote:
Perhaps this has been asked before but what's the procedure for
upgrading to 6.2.2? There's no wizard. Just copy the new files over the
older ones? thanks!
If you have the Windows executable just run it, it will upgrade
gracefully.
Ceejay
--
ceejay
thanks ceejay. I saw several files along with the exe on the download
folder, hence my confusion.
Best,
crooner
--
crooner
crooner's Profile: http://forums.slimdevices.com/member.php?userid=3379
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I've just upgraded to 6.2.2 it was a snap. I'll do some critical
listening tonight and report back!
--
crooner
crooner's Profile: http://forums.slimdevices.com/member.php?userid=3379
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My experience is the opposite to peter's.
I find the sound with my SB3 to be quite smooth with no trace of
harshness. I am using slimserver 6.2.1.
I am using the analog outs with full volume (40) at the SB. I regulate
volume control at my receiver.
Should I go ahead and upgrade to 6.2.2? Bear
crooner Wrote:
My experience is the opposite to peter's.
I find the sound with my SB3 to be quite smooth with no trace of
harshness. I am using slimserver 6.2.1.
I am using the analog outs with full volume (40) at the SB. I regulate
volume control at my receiver.
Should I go ahead
Thanks, I guess I'll leave well enough alone. It sounds pretty darn good
to me. The slimserver software slows everything down when rescanning the
library, the only minor issue, but that's to be expected. Very happy
with 6.2.1's overall performance.
--
crooner
FWIW - I have been following the new volume vs sound quality issue. I
also thought that my SB2 lost some sound quality at some point. My
setup is: SB2 analog - Parasound HCA-750 - Paradigm Studio 20 v3. I
was using the 6.1 final release, and just installed the latest 6.5
nightly
That means that -35dB corresponds to a volume setting of 12 in the SB
0-40 volume range.
I believe you'll find the changeover is at 16 on the 0-40 range. That's
what the measurements indicate - below this value the old and patched
code measure identically.
Andy.
--
Andrew L. Weekes
Patrick Dixon Wrote:
Whilst I'm happy to take the credit for being a pita over it, I reckon
it was jhwilliams and his golden-eared girlfriend who picked it up
first!
Ta! Hats off for your solution though.
Speaking of ears, I was planning another round of tests, but I have a
bad headcold at
However, ASRC while it obviously eliminates jitter in the source signal,
does god knows what to the data coming through.My thoughts exactly! The
interpolation only works properly if the in
and out clocks are in a 'consistent' phase (and therefore frequency)
relationship. From what I've
seanadams Wrote:
If it really is rounding/dither error, then a BIG kudos goes to the
golden ears who picked it up. :)
Hmm, isn't digital sound forever perfect? Isn't a blind test the only
judge? Audiophilia? Subjectivism? :)
On a more serious note, I am glad I helped restarting the
vdorta Wrote:
Hmm, isn't digital sound forever perfect? Isn't a blind test the only
judge? Audiophilia? Subjectivism? :)
No, no, yes, yes!
However it is really hard to fix something without a bit of science to
track it down... :)
--
seanadams
Andrew,
Can you tell me what FFT software you used to read in through the SPDIF
of your sound card? Was it shareware or did you roll your own?
Also, can you tell me what type of windowing you used on the input data
stream when you measured THD?
Thanks,
Marc
--
MarcBernard
Christian Pernegger Wrote:
It would be good to get real confirmation through blind testing or
measurements that: 1) there was really a problem introduced after FW
15
Could someone link the bug plase, so I know what to test for?
FWIW, after trying out the new ReplayGain support I found
I thought you bought two of everything! Or was there a joint funeral on
that day?
Max
seanadams Wrote:
Sadly, it did not survive reverse engineering long enough to make it to
the audition. But I can see why one would describe it as accurate etc
- clearly designed for low noise and not to
cbemoore Wrote:
Hi Dean,
Your change applies 8 bit accuracy to volumes louder than -35dB. What
volume on the SB 0-40 volume scale corresponds to -35dB?
Chris
I believe the volume changes in steps of 1.25dB.
That means that -35dB corresponds to a volume setting of 12 in the SB
0-40 volume
Can you tell me what FFT software you used to read in through the SPDIF
of your sound card? Was it shareware or did you roll your own?
It's Spectralab.
Also, can you tell me what type of windowing you used on the input data
stream when you measured THD?
Windowing for those measurements was
Sean - yes I can hear it.
Please have a look at the numerical examples I produced on the other
thread and in the bug report - the rounding is affecting the 16th bit
and therefore it's 'effectively' at 90/96dB.
The best analogy I can think of, is that you only get 96dB s/n with a
16-bit ADC, if
On Tue, 2005-11-22 at 10:01 -0800, Patrick Dixon wrote:
Please have a look at the numerical examples I produced on the other
thread and in the bug report - the rounding is affecting the 16th bit
and therefore it's 'effectively' at 90/96dB.
Anytime you play with PCM numbers, you really have to
seanadams Wrote:
Aside from the volume levels being different, I can't hear any
difference between the old firmware and the new firmware. We are going
to put the patch in to use 8-bit coefficients BUT we are concerned that
if there is really an audible difference that it may be some other
With all the fancy test gear you have there, can you measure the SNR
with a digital test tone (before and after). I reckon you will find
it's 6dB+ worse with the rounding.
--
Patrick Dixon
www.at-tunes.co.uk
Patrick
Patrick Dixon Wrote:
Sean - yes I can hear it.
Please have a look at the numerical examples I produced on the other
thread and in the bug report - the rounding is affecting the 16th bit
and therefore it's 'effectively' at 90/96dB.
The best analogy I can think of, is that you only get
When, exactly, will the patch be incorporated into the nightly? As I
recall, manually inserting the patch is difficult on a WinXP machine,
so I'm still waiting for the native fix.
--
sleepysurf
squeezebox2 (with elpac wm075-1950-760 linear psu) direct to amp using
slimserver preamp vol
On Tue, 2005-11-22 at 10:14 -0800, Patrick Dixon wrote:
pfarrell Wrote:
Anytime you play with PCM numbers, you really have to redither it.
There are theological arguments about which dither algorithm
is best, but which you use is not important, you have to
use one, and any of them is
Sorry Pat, I added this correction later!
Whoops - I meant dither. I have jitter on the brain.
--
Patrick Dixon
www.at-tunes.co.uk
Patrick Dixon's Profile: http://forums.slimdevices.com/member.php?userid=90
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Quick question: does this issue affect the bass/treble control values as
well? I assume mid-level on these will cause no modification of the PCM
data, whereas non-middle settings will. Or is it done in the analog
domain (and analog outputs only)?
--
LavaJoe
On Tue, 2005-11-22 at 11:55 -0800, Patrick Dixon wrote:
Sorry Pat, I added this correction later!
Whoops - I meant dither. I have jitter on the brain.
I think there are treatments for that. The
modern drugs are very effective.
I am very skeptical about jitter. Folks have been
talking about it
seanadams Wrote:
It would be good to get real confirmation through blind testing or
measurements that:
1) there was really a problem introduced after FW 15
2) the problem is or is not fixed by this patch
There are many people here with better ears than mine - if you can
really hear it
I also am skeptical about how my Benchmark DAC-1's
marketing copy talks about it being completely
totally and unanimously immune to jitter.
Having dismantled a DAC-1 I can tell you it is a perfectly vanilla
implementation of ASRC using a standard ADI chip, and it does perform
as
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