Re: [slim] Volume control number changes, volume does not.

2012-05-01 Thread toby10

PDXMike wrote: 
 . every time I log in and out of mysqueezebox.com it updates the
 firmware. Is that normal behavior? ...  

Yes, if your LMS server version is not the same as the MySB.com version
(which is 7.7.2) this will happen.
Your choices are:
-  update your LMS server to 7.7.2
-  don't switch to MySB.com
-  do switch to MySB.com and do the firmware update/downgrade every time



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Re: [slim] Volume control number changes, volume does not.

2012-05-01 Thread Mnyb

Have a look in the player settings ,you migth have fixed volume set.
The volume slider still moves but does not do anything, this is a
feature so that ir-blaster and similar plugins can intercept volume
changes, even when fixed volume is selected.



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Re: [slim] Volume control number changes, volume does not.

2012-05-01 Thread PDXMike

Mnyb wrote: 
 Have a look in the player settings ,you migth have fixed volume set.
 The volume slider still moves but does not do anything, this is a
 feature so that ir-blaster and similar plugins can intercept volume
 changes, even when fixed volume is selected.

I didn't see anything in settings on the player that allowed fixed
volume. It would be under Audio, right? Are there additional settings
available when I control it via musqueezebox.com?

Thanks



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Re: [slim] Volume control number changes, volume does not.

2012-05-01 Thread PDXMike

Mnyb wrote: 
 Have a look in the player settings ,you migth have fixed volume set.
 The volume slider still moves but does not do anything, this is a
 feature so that ir-blaster and similar plugins can intercept volume
 changes, even when fixed volume is selected.

I didn't see anything in settings on the player that allowed fixed
volume. It would be under Audio, right? Are there additional settings
available when I control it via musqueezebox.com?

Thanks



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Re: [slim] Volume control

2008-12-08 Thread mooblie

Don't exactly know, but somewhere between 7.2.1 and 7.3.


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Re: [slim] Volume control

2008-12-07 Thread mooblie

After raising a bug about this, I was asked, reasonably enough, to just
retest with current SC version 7.3.  So, I did that - and the volume
response has already been fixed! - see attachment.  

It now runs (correctly, I believe) in 0.5dB steps down from 100 down to
1 (i.e. with output gain from 0 to -50dB) - following the correct linear
path on a log/lin plot.  (The final value of 0 = mute.)  It now provides
the fine control necessary when running the SB2/3 into a sensitive amp
at very low volumes e.g. for background music.

Sorry to have wasted everybody's time for reporting my testing of
obsolete software!  And thanks to the team who responded to the bug so
quickly!


+---+
|Filename: sc_7.3_volume.jpg|
|Download: http://forums.slimdevices.com/attachment.php?attachmentid=6358|
+---+

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Re: [slim] Volume control

2008-12-07 Thread JadeMonkee

So when was this fixed? Only in v7.3, or earlier?


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Re: [slim] Volume control

2008-12-05 Thread mooblie

jeffbarish;365938 Wrote: 
 Using the CLI, it is possible to set the volume to real numbers between
 0 and 100.  Is there documentation anywhere on what the numbers mean? 
 For example, do they represent uniform steps in db's?

No, the numbers from 0 to 100 do NOT represent uniform steps in
decibels - I wish they did!  

I measured and plotted this in 'this thread (post #7)'
(http://forums.slimdevices.com/showthread.php?t=29992), but my call for
a plug-in or software fix to change this got no response.  :-(

The problem, simply stated, as I see (hear?) it, is that 

-the volume changes are the lower end are too coarse, and at the top
end: too fine.-


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Re: [slim] Volume control

2008-12-05 Thread radish

I looked at your chart, and to be honest it looks exactly as I'd expect.
The general rule of thumb as I understand it is that a doubling in
perceived loudness is equivalent to an increase of around 10db. If I
had the volume control at 20 and changed it to 40, I'd logically expect
the sound to be twice as loud - which means the SPL would have to go
up by 10dB. Looking at your measured values, that's pretty much exactly
what happens (~-18 to -10). Likewise going from 30 to 60 should also be
a change of 10 (and it is also actually about 8). If the response
followed your linear scale, 20-40 would double the loudness, but so
would 40-60 and 60-80. That doesn't make sense to me - going from 60%
to 80% (and it is a scale from 0-100 so I'd guess most people perceive
it as a percentage) shouldn't double the loudness. Your comment that
not much happens as you drop from 10040, output drops from 0 to
-10dB seems misleading, because that drop of -10dB is close to a
halving in loudness - which seems appropriate for the scale change of
10040.


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Re: [slim] Volume control

2008-12-05 Thread mooblie

Yes, but the ear responds logarithmically, so for each, change by say
10 Squeezebox volume steps I would want a the same relative change in
loudness, say 10dB i.e. approximately a doubling. 

That's NOT what we've got.  

Specifically: going from 90 to 80 gives a ~3dB change, going from 20 to
10 gives a ~10dB change.

Aside from the figures: do you not find this yourself: the changes are
large at the quiet end, and small at the loud end?


+---+
|Filename: sb_vol_chart.jpg |
|Download: http://forums.slimdevices.com/attachment.php?attachmentid=6350|
+---+

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Re: [slim] Volume control

2008-12-05 Thread radish

mooblie;366758 Wrote: 
 With respect, I can't really agree with your analysis of perceived
 loudness or your conclusions.  
 
 Using your numbers: going from 20 to 40 (twenty steps up) is about +8dB
 ... fine.  Going from 40 to 60 (another twenty steps up) SHOULD be the
 same (+8dB). 
 
Why? 60 is not 2x40 it's 1.5x40, so a level of 60 should be one and a
half times as loud as a level of 40. If I didn't know anything about
perceived loudness and dB scales I'd assume that 0 is silent and 100
is loudest, thus 50 should be half as loud as maximum, which is
around -10dB. Likewise 25 should be a quarter of maximum which is
around -20dB. Clearly the numbers you've measured are indicating -8 and
-16 rather than -10 and -20 but the relationship is the same.

 
 I actually think it -should- double in loudness for each, say, twenty
 steps
Well you're welcome to want that, and what you propose would certainly
achieve it, I'm just challenging your implied assertion that the
current situation is wrong in some way. For a 0-100 scale with no
displayed unit I think it makes perfect sense - the implication is that
it's a linear scale from 0-100% of maximum perceived loudness.

 
 Aside from the figures: do you not find this yourself: the perceived
 volume changes are large at the quiet end, and small at the loud end?
Sure, but I can't say it bothers me. And to be clear, I wouldn't object
to it being changed, I can adjust to holding down the remote button a
little longer or shorter time :)  I just don't see any need to change
it, as it's behaving is a completely logical manner to me.


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Re: [slim] Volume control

2008-12-05 Thread mooblie

Well, we'll have to agree to differ on this one.  :-)


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Re: [slim] Volume control

2008-12-05 Thread Ben Sandee
On Fri, Dec 5, 2008 at 11:03 AM, mooblie
[EMAIL PROTECTED] wrote:

 Well, we'll have to agree to differ on this one.  :-)

FWIW there was a significant change to the volume curve for SB2+
devices several years ago.  You might want to search for the
discussion of that change.  As you've demonstrated, there's always
going to be someone who would like the curve to be different.

At this point in the product lifecycle, a change of any real substance
would likely bring in a torrent of why did you change that?! and
give me an option to switch back! or whatever.

If the underlying volume curve logic were in the server then it could
be altered by anyone, possibly through a plugin.  As it stands it is a
device firmware feature so we're somewhat limited.  One feature that
could be implemented would be to modify where the 1-11 scale in the
web UI map to the 1-100 in the player UI.  This has been requested
before and I think it would be doable in software via a patch or a
plugin.

Ben
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Re: [slim] Volume control

2008-12-05 Thread mooblie

Hmm.  Thanks Ben - shame.  OK: NOT so easily fixed then as I glibly
suggested - I guess there's little appetite for firmware changes unless
absolutely necessary?


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Re: [slim] Volume control

2008-12-05 Thread Ben Sandee
On Fri, Dec 5, 2008 at 11:18 AM, mooblie
[EMAIL PROTECTED] wrote:

 Hmm.  Thanks Ben - shame.  OK: NOT so easily fixed then as I glibly
 suggested - I guess there's little appetite for firmware changes unless
 absolutely necessary?

I think a change like that is mostly a matter of priorities because a
select few people have all three of:  1) the firmware source, 2) the
expensive devkit, 3) the expertise to work in that embedded
environment.  Even then, there might not be room in the firmware to
allow something like customizable volume curves, even if it were a
highly-requested feature.

Ben
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Re: [slim] Volume control

2008-12-05 Thread Phil Leigh

hmmm... every volume control I've ever encountered has deployed a log
response, since that is how perceived loudness/our ears work. If you
think the volume adjustment is too coarse at low levels with a
sensitive amp, just insert an analogue attenuator betwixt SB and amp.
That's the standard fix for this problem in every other context.


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Outdoors: Boombox+Creative Sub (If I remember to turn it on...)

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Re: [slim] Volume control

2008-12-05 Thread peterw

It IS supposed to be pretty regular steps: 0.5 dB/step for SB2, and for
Boom, 1.5 dB/step at volumes 1-25, and 0.5 dB/step above that. 

Here's the SB2/SB3/Classic source code:
http://svn.slimdevices.com/7.3/trunk/server/Slim/Player/Squeezebox2.pm?revision=24173view=markup
Here's the Boom source code:
http://svn.slimdevices.com/7.3/trunk/server/Slim/Player/Boom.pm?revision=23831view=markup

The main source code is in the Squeezebox2 file -- the Boom code
inherits that and merely redefines the volume-to-dB mapping. When you
look at the output, they're sending similar fixed values for similar
dB settings -- SB2's volume 1 is -49.01 dB, which maps to firmware
fixed volume step 232; Boom volume 17 is nearly the same, -48.84 dB,
firmware step 237. Both send the the max step value, 65536, at volume
100/0 dB, and 61952 at volume 99, ~-0.5 dB.

Below is the map of volume levels to supposed dB gain. If you're not
measuring something like this from your Squeezebox outputs with
appropriate test material (0 dB white noise??) and equipment, please
file a ticket at bugs.slimdevices.com. And feel free to make (and
share!) a patch that resolves the issue if you can map firmware fixed
volume levels to dB better than the current code.

Oh, it also looks like a plugin should be able to get the current
volume attenuation in dB programatically, by using
$client-getVolumeParameters() $client-getVolume();


Code:


  1  = -49.01 (SB2) -72.52 (Boom)
  2  = -48.51 (SB2) -71.04 (Boom)
  3  = -48.02 (SB2) -69.56 (Boom)
  4  = -47.52 (SB2) -68.08 (Boom)
  5  = -47.03 (SB2) -66.60 (Boom)
  6  = -46.53 (SB2) -65.12 (Boom)
  7  = -46.04 (SB2) -63.64 (Boom)
  8  = -45.54 (SB2) -62.16 (Boom)
  9  = -45.05 (SB2) -60.68 (Boom)
  10 = -44.55 (SB2) -59.20 (Boom)
  11 = -44.06 (SB2) -57.72 (Boom)
  12 = -43.56 (SB2) -56.24 (Boom)
  13 = -43.07 (SB2) -54.76 (Boom)
  14 = -42.57 (SB2) -53.28 (Boom)
  15 = -42.08 (SB2) -51.80 (Boom)
  16 = -41.58 (SB2) -50.32 (Boom)
  17 = -41.09 (SB2) -48.84 (Boom)
  18 = -40.59 (SB2) -47.36 (Boom)
  19 = -40.10 (SB2) -45.88 (Boom)
  20 = -39.60 (SB2) -44.40 (Boom)
  21 = -39.11 (SB2) -42.92 (Boom)
  22 = -38.61 (SB2) -41.44 (Boom)
  23 = -38.12 (SB2) -39.96 (Boom)
  24 = -37.62 (SB2) -38.48 (Boom)
  25 = -37.13 (SB2) -37.00 (Boom)
  26 = -36.63 (SB2) -36.51 (Boom)
  27 = -36.14 (SB2) -36.01 (Boom)
  28 = -35.64 (SB2) -35.52 (Boom)
  29 = -35.15 (SB2) -35.03 (Boom)
  30 = -34.65 (SB2) -34.53 (Boom)
  31 = -34.16 (SB2) -34.04 (Boom)
  32 = -33.66 (SB2) -33.55 (Boom)
  33 = -33.17 (SB2) -33.05 (Boom)
  34 = -32.67 (SB2) -32.56 (Boom)
  35 = -32.18 (SB2) -32.07 (Boom)
  36 = -31.68 (SB2) -31.57 (Boom)
  37 = -31.19 (SB2) -31.08 (Boom)
  38 = -30.69 (SB2) -30.59 (Boom)
  39 = -30.20 (SB2) -30.09 (Boom)
  40 = -29.70 (SB2) -29.60 (Boom)
  41 = -29.21 (SB2) -29.11 (Boom)
  42 = -28.71 (SB2) -28.61 (Boom)
  43 = -28.22 (SB2) -28.12 (Boom)
  44 = -27.72 (SB2) -27.63 (Boom)
  45 = -27.23 (SB2) -27.13 (Boom)
  46 = -26.73 (SB2) -26.64 (Boom)
  47 = -26.24 (SB2) -26.15 (Boom)
  48 = -25.74 (SB2) -25.65 (Boom)
  49 = -25.25 (SB2) -25.16 (Boom)
  50 = -24.75 (SB2) -24.67 (Boom)
  51 = -24.26 (SB2) -24.17 (Boom)
  52 = -23.76 (SB2) -23.68 (Boom)
  53 = -23.27 (SB2) -23.19 (Boom)
  54 = -22.77 (SB2) -22.69 (Boom)
  55 = -22.28 (SB2) -22.20 (Boom)
  56 = -21.78 (SB2) -21.71 (Boom)
  57 = -21.29 (SB2) -21.21 (Boom)
  58 = -20.79 (SB2) -20.72 (Boom)
  59 = -20.30 (SB2) -20.23 (Boom)
  60 = -19.80 (SB2) -19.73 (Boom)
  61 = -19.31 (SB2) -19.24 (Boom)
  62 = -18.81 (SB2) -18.75 (Boom)
  63 = -18.32 (SB2) -18.25 (Boom)
  64 = -17.82 (SB2) -17.76 (Boom)
  65 = -17.33 (SB2) -17.27 (Boom)
  66 = -16.83 (SB2) -16.77 (Boom)
  67 = -16.34 (SB2) -16.28 (Boom)
  68 = -15.84 (SB2) -15.79 (Boom)
  69 = -15.35 (SB2) -15.29 (Boom)
  70 = -14.85 (SB2) -14.80 (Boom)
  71 = -14.36 (SB2) -14.31 (Boom)
  72 = -13.86 (SB2) -13.81 (Boom)
  73 = -13.37 (SB2) -13.32 (Boom)
  74 = -12.87 (SB2) -12.83 (Boom)
  75 = -12.38 (SB2) -12.33 (Boom)
  76 = -11.88 (SB2) -11.84 (Boom)
  77 = -11.39 (SB2) -11.35 (Boom)
  78 = -10.89 (SB2) -10.85 (Boom)
  79 = -10.40 (SB2) -10.36 (Boom)
  80 = -9.90 (SB2) -9.87 (Boom)
  81 = -9.41 (SB2) -9.37 (Boom)
  82 = -8.91 (SB2) -8.88 (Boom)
  83 = -8.42 (SB2) -8.39 (Boom)
  84 = -7.92 (SB2) -7.89 (Boom)
  85 = -7.43 (SB2) -7.40 (Boom)
  
  86 = -6.93 (SB2) -6.91 (Boom)
  87 = -6.44 (SB2) -6.41 (Boom)
  88 = -5.94 (SB2) -5.92 (Boom)
  89 = -5.45 (SB2) -5.43 (Boom)
  90 = -4.95 (SB2) -4.93 (Boom)
  91 = -4.46 (SB2) -4.44 (Boom)
  92 = -3.96 (SB2) -3.95 (Boom)
  93 = -3.47 (SB2) -3.45 (Boom)
  94 = -2.97 (SB2) -2.96 (Boom)
  95 = -2.48 (SB2) -2.47 (Boom)
  96 = -1.98 (SB2) -1.97 (Boom)
  97 = -1.49 (SB2) -1.48 (Boom)
  98 = -0.99 (SB2) -0.99 (Boom)
  99 = -0.50 (SB2) -0.49 (Boom)
  100 = 0.00 (SB2) 0.00 (Boom)
  



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Re: [slim] Volume control

2008-12-05 Thread mooblie

In that case, Peter, it's a bug.  I've plotted the measured output
(blue), compared to your theoretical figures (red) below.

Your theoretical figures are exactly what I'd suspected and hoped for -
perfectly linear (on a log/lin scale) with 0.5dB per volume step.


+---+
|Filename: sb_measured_theory.jpg   |
|Download: http://forums.slimdevices.com/attachment.php?attachmentid=6351|
+---+

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Re: [slim] Volume control

2008-12-05 Thread mooblie

Phil Leigh;366816 Wrote: 
 hmmm... every volume control I've ever encountered has deployed a log
 response, since that is how perceived loudness/our ears work. 

Agreed.  That's my understanding - but the SB2 (erroneously) doesn't
currently have a log response.

Phil Leigh;366816 Wrote: 
 If you think the volume adjustment is too coarse at low levels with a
 sensitive amp, just insert an analogue attenuator betwixt SB and amp.
 That's the standard fix for this problem in every other context.

Agreed too.  This need for an attenuator is what alerted me to this
incorrect characteristic in the first place.


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Re: [slim] Volume control

2008-12-05 Thread Ben Sandee
On Fri, Dec 5, 2008 at 11:11 AM, Ben Sandee [EMAIL PROTECTED] wrote:

 If the underlying volume curve logic were in the server then it could
 be altered by anyone, possibly through a plugin.  As it stands it is a
 device firmware feature so we're somewhat limited.  One feature that
 could be implemented would be to modify where the 1-11 scale in the
 web UI map to the 1-100 in the player UI.  This has been requested
 before and I think it would be doable in software via a patch or a
 plugin.

Mea culpa, everything I wrote above is just wrong.  It may have been
right at one time but happily it no longer is.

Ben
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Re: [slim] Volume control

2008-12-03 Thread peterw

jeffbarish;365938 Wrote: 
 Using the CLI, it is possible to set the volume to real numbers between
 0 and 100.
Yes. You want the 'mixer volume' command. Arguments can be absolute
(mixer volume 50) or relative (mixer volume +10, mixer volume -5,
etc.).

 Is there documentation anywhere on what the numbers mean?  For example,
 do they represent uniform steps in db's?

You may want to look at the Perl source (in Slim/Player?).
Squeezecenter tells players how much attenuation to apply (combination
of 'volume', 'preamp gain', and replay gain). For most players, volume
levels 1-100 represent uniform steps, ((100 - N) * -0.5) dB gain for
the volume component of the attenuation. The volume curve for the Boom
is more complex. I don't know if there are Perl or CLI APIs for
accessing the current composite (volume + preamp + replaygain) or
simple volume attenuation levels in dB.


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Re: [slim] Volume control bug

2008-08-25 Thread Ben Sandee
On Mon, Aug 25, 2008 at 5:27 AM, FB67 
[EMAIL PROTECTED] wrote:


 I have been searching these forums and found out that there were issues
 with volume control going crazy a few months ago.

 I have just found out (by coincidence) that I can reproduce this error
 by attempting to adjust the volume level while the Controller is
 occupied by a search for an artist. The volume level turns to 100%
 without possibility to avoid it be pressing the decrease-button.

 It is very unfortunate since I have all my players connected directly
 to active speakers, some of them quite powerful ;-)


I just tried to duplicate this on the latest 7.2 nightly builds and could
not (based on your description).  My server is pretty powerful so the search
does not take long, but pushing volume-up during does not cause the voume to
max out or start increasing out of control.

Ben
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Re: [slim] Volume control bug

2008-08-25 Thread Nonreality

I had a different volume control problem and going to 7.2 also fixed
mine.


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Re: [slim] Volume control, affect SPDIF?

2006-05-18 Thread kdf

Quoting lovemov [EMAIL PROTECTED]:



I only want bit perfect. I saw there is an volume knob on the remote,
does it affect digital output? If it does, too bad, it's no longer bit
perfect. Anyone?


you can set digital out to be fixed in player settings. I'd advise  
spending some time with the wiki and the faq while you wait:


specifically: http://wiki.slimdevices.com/index.cgi?HowtoBestAudioQuality
and http://faq.slimdevices.com
-k
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Re: [slim] Volume control - Please make it logarithmic

2006-01-11 Thread dean blackketter
The new volume scale is far more logarithmic in voltage than it was  
before.  It should be _perceptually_ more linear now in 6.2.1.


Some very minor tweaking was done for the 6.2.2 release to avoid some  
rounding errors, but the overall volume curve should be nearly  
identical.


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