Re: [slim] Transporter Bitrate Question

2010-06-16 Thread andynormancx

I'm no fan of iTunes, but it sounds like you really don't understand
what is happening here.

The volume control at the top of the iTunes window will have no effect
on the tags added to your files to indicate any volume levelling.

The bit rate lowering also has nothing to do with iTunes. That it
purely down to Squeezebox Server converting the audio to FLAC before
streaming it to the player. This is a perfectly sensible thing to do
(to reduce network usage) and the fact that it reports a lowered
bitrate doesn't mean you have lost anything, FLAC is completely
lossless, the same data will arrive at your player as was read from
your CD with iTunes.

I'd agree that dbPowerAmp is much better than iTunes at ripping, but
you are trying to blame iTunes for things that have nothing to do with
it.


-- 
andynormancx

Yes, it will. Yes, all of them. Yes, SoftSqueeze as well. What ?
I SAID ALL OF THEM !

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Re: [slim] Transporter Bitrate Question

2010-06-16 Thread Phil Leigh

There is a lot of noise on these forums relating to the reported bitrate
in SBS... which because of the transcoding is causing FUD.
I wish the bitrate displays for local music playback would be removed.
They really aren't helpful.


-- 
Phil Leigh

You want to see the signal path BEFORE it gets onto a CD/vinyl...it
ain't what you'd call minimal...
Touch(wired/XP) - TACT 2.2X (Linear PSU) + Good Vibrations S/W - MF
Triplethreat(Audiocom full mods) - Linn 5103 - Aktiv 5.1 system (6x
LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Townsend Supertweeters, Blue
Jeans Digital,Kimber Speaker  Chord Interconnect cables
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Re: [slim] Transporter Bitrate Question

2010-06-16 Thread PencilNeckGeek

andynormancx;555139 Wrote: 
 I'm no fan of iTunes, but it sounds like you really don't understand
 what is happening here.
 
 The volume control at the top of the iTunes window will have no effect
 on the tags added to your files to indicate any volume leveling.
 

So if it isn't the volume control in i-Tunes then what else could it
be? Would the volume control in Windows be the culprit to adding these
tags? If it isn't Windows altering the tags either then you would be
current in stating that I certainly don't understand what is happening
here.

One thing I know for sure is that all volume leveling is turned off in
i-Tunes preferences and it was the only piece of software (Excluding
Windows OS, of course)involved in getting the CD data into a .wav
format.


-- 
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Re: [slim] Transporter Bitrate Question

2010-06-16 Thread JJZolx

PencilNeckGeek;555413 Wrote: 
 So if it isn't the volume control in i-Tunes then what else could it be?
 Would the volume control in Windows be the culprit to adding these tags?
 If it isn't Windows altering the tags either then you would be correct
 in stating that I certainly don't understand what is happening here.
 
 One thing I know for sure is that all volume leveling is turned off in
 i-Tunes preferences and it was the only piece of software (Excluding
 Windows OS, of course)involved in getting the CD data into a .wav
 format.

What difference does it even make?  If replay gain is turned off (the
default setting) for the player playing these files then it's not
applied.  It's just a piece of data that is ignored.

The WAV files probably don't have any tags.  Information in iTunes
about the files would be in iTunes' database, not file tags.


-- 
JJZolx

Jim

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Re: [slim] Transporter Bitrate Question

2010-06-16 Thread Phil Leigh

Can we start again?
You had 2 questions:

1) Why is the bitrate reported as lower than you think it should be -
answer: by default FLAC is used as the streaming transport protocol to
the player and that needs less bits than wav/pcm. It is still perfect
fidelity. Forget about it.

2) Why does Replaygain information show up on the screen? - answer: the
files you are playing have replaygain tags associated with them. They
were put there by iTunes. If you have the adjust volume options
turned off (settings - player - audio) they do nothing at all.


-- 
Phil Leigh

You want to see the signal path BEFORE it gets onto a CD/vinyl...it
ain't what you'd call minimal...
Touch(wired/XP) - TACT 2.2X (Linear PSU) + Good Vibrations S/W - MF
Triplethreat(Audiocom full mods) - Linn 5103 - Aktiv 5.1 system (6x
LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Townsend Supertweeters, Blue
Jeans Digital,Kimber Speaker  Chord Interconnect cables
Kitchen Boom, Outdoors: SB Radio

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Re: [slim] Transporter Bitrate Question

2010-06-15 Thread PencilNeckGeek

So from what I could tell I believe that the reason the volume was being
adjusted on the CD's that were burned to .wav format via i-Tunes was
because of the Volume Control lever that is shown at the top of the
i-Tunes window. Even though the Preferences were set to not do any
volume leveling.

I would typically keep the Volume setting within the i-Tunes window at
about half way so my guess is that this was the reason I was seeing the
Adjustment within the Squeezebox server.

As far as the bit-rate being lowered I will blame this on i-Tunes also
as I believe it only burns with a Constant (ie..Hard Coded) Bit Rate
but I could be mistaken about that.

I guess the moral of the story is to avoid i-Tunes like the plague when
it comes to ripping your CD Collection. I recently switches over to
DB-Power Amp for CD Ripping which seems much more accurate combined
with it's Accurate Rip feature and no volume controls to worry about.

i-Tunes is the Devil..


-- 
PencilNeckGeek

GEAR: 
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Wadia i-Transport, Rotel RCD1072, Shunyata VRay  Hydra 6, Shunyata
Python Alpha Helix  Alpha Helix Taipan, Shunyata Diamondbacks,
Ridgestreet Audio Poiema R-v3 Balanced XLR IC's, MIT AVT1 Digital,
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Re: [slim] Transporter Bitrate Question

2010-06-10 Thread JJZolx

mcvan;553997 Wrote: 
 So what did you find out? I'm seeing the same thing w/ a 2604kbps VBR
 file that seems to get (Converted to 705.6kbps ABR) in a Squeezebox 3
 Classic.

What is a '2604kbps VBR' file?  What file format, bit depth and
sampling rate is it?

By default, uncompressed lossless files (WAV, AIFF) will be
_losslessly_ encoded in FLAC for streaming.  Some (most) other lossless
formats will be _losslessly_ transcoded to FLAC.


-- 
JJZolx

Jim

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Re: [slim] Transporter Bitrate Question

2010-06-10 Thread mcvan

PencilNeckGeek;552012 Wrote: 
 Thanks for the replies. I will have to double check all the volume
 controls again and report back
So what did you find out? I'm seeing the same thing w/ a 2604kbps VBR
file that seems to get (Converted to 705.6kbps ABR) in a Squeezebox 3
Classic.


-- 
mcvan

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[slim] Transporter Bitrate Question

2010-05-31 Thread PencilNeckGeek

OK, here's the scenario. I have imported a CD into i-Tunes in .WAV file
format. I have no volume leveling features enabled within i-Tunes and
the final Bitrate on all songs is listed as 1411kbps within the i-Tunes
window.

I have my Squeezebox Server setup to use i-Tunes. When I play one of
the songs within the Squeezebox Web Console and look at the Song Info
while it's playing I see the following info listed below:

Bitrate: 1411kbps CBR (Converted to 705.6kbps ABR)

Who can tell me the reason why the song appears to be down converted
while playing? Is this a product of i-Tunes over stating the actual
Bitrate to 1411kbps and the True Bitrate is actually 705.6kbps?

Also, on some songs I see a combination of the info listed above as
well as this info below regarding the Volume:

Volume Adjustment: -5.49 dB (this value fluctuates up or down with the
highest value observed so far as being -11.xx db)

Is this Volume Adjustment a product of the recording studio or
something that the Transporter is doing?

I have the Transporter hard set to %100 volume at all times within the
Audio Settings page. My fear is that I am losing Dynamic Range and
sound quality as a result of this Bitrate  Volume adjustment
behavior.

Is there a way to avoid this from happening? Would keeping all music in
the Transporters native .flac format prevent this behavior? I'm
wondering if by having these songs in .WAV format and forcing the
Transporter to use some other, none native codec it is causing me to
miss out on all the Bits I'm entitled to hear.

Thanks for any info you can provide


-- 
PencilNeckGeek

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Re: [slim] Transporter Bitrate Question

2010-05-31 Thread Phil Leigh

PencilNeckGeek;551929 Wrote: 
 OK, here's the scenario. I have imported a CD into i-Tunes in .WAV file
 format. I have no volume leveling features enabled within i-Tunes and
 the final Bitrate on all songs is listed as 1411kbps within the i-Tunes
 window.
 
 I have my Squeezebox Server setup to use i-Tunes. When I play one of
 the songs within the Squeezebox Web Console and look at the Song Info
 while it's playing I see the following info listed below:
 
 Bitrate: 1411kbps CBR (Converted to 705.6kbps ABR)
 
 Who can tell me the reason why the song appears to be down converted
 while playing? Is this a product of i-Tunes over stating the actual
 Bitrate to 1411kbps and the True Bitrate is actually 705.6kbps?
 
 Also, on some songs I see a combination of the info listed above as
 well as this info below regarding the Volume:
 
 Volume Adjustment: -5.49 dB (this value fluctuates up or down with the
 highest value observed so far as being -11.xx db)
 
 Is this Volume Adjustment a product of the recording studio or
 something that the Transporter is doing?
 
 I have the Transporter hard set to %100 volume at all times within the
 Audio Settings page. My fear is that I am losing Dynamic Range and
 sound quality as a result of this Bitrate  Volume adjustment
 behavior.
 
 Is there a way to avoid this from happening? Would keeping all music in
 the Transporters native .flac format prevent this behavior? I'm
 wondering if by having these songs in .WAV format and forcing the
 Transporter to use some other, none native codec it is causing me to
 miss out on all the Bits I'm entitled to hear.
 
 Thanks for any info you can provide

1) ignore the ABR bitrate figure - it is completely meaningless. Nothng
is being downconverted.

2) you must have the iTunes volume levelling set, as that is the ONLY
way that volume meta tags can be added to your files. SBS reacts to
these tags. You can turn this behaviour OFF at play time via the
Settings - Player - Audio ... volume adjustment in the Web UI.


Using FLAC and avoiding iTunes would be a big step in the right
direction to perational happiness :-) - however, from a pure audio
quality perspective there should be no difference.


-- 
Phil Leigh

You want to see the signal path BEFORE it gets onto a CD/vinyl...it
ain't what you'd call minimal...
Touch(wired/XP) - TACT 2.2X (Linear PSU) + Good Vibrations S/W - MF
Triplethreat(Audiocom full mods) - Linn 5103 - Aktiv 5.1 system (6x
LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Townsend Supertweeters, Blue
Jeans Digital,Kimber Speaker  Chord Interconnect cables
Kitchen Boom, Outdoors: SB Radio

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Re: [slim] Transporter Bitrate Question

2010-05-31 Thread bhaagensen

Its probably because wav by default is streamed as flac. To change: Go
to Settings  Advanced  Filetypes and look up the setting for WAV.
Then disable all but the PCM (builtin) entry.


-- 
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Re: [slim] Transporter Bitrate Question

2010-05-31 Thread ntom

By coincidence just noticed the same thing on my standard Classic
Squeezebox (playing through a separate DAC). I believe the Classic
can't throughput 24/96 but downsamples at the server. 

The track info for a 24/96kHz before it is selected for playing shows
Bitrate:3183kbps VBR.  Once the track is actually playing the same
info shows: Bitrate:3183kbps VBR (Coverted to 705.6kbps ABR).
This doesn't happen with 44.1 tracks so assumed this was an indication
it has been downsampled.

If that's so, then maybe that's what's happening with your Transporter
but if so there must be a setting somewhere to handle 24/96 without
downsampling!


As far as volume adjustment is concerned you must have volume levelling
turned on somewhere in you ripping process -I replay gain.


-- 
ntom

SB3, Perpetual Technologies P1-A / P3-A, Naim82 pre + 4xNaim135 powers,
Martin Logan SL3's(+ 2nd SB3  2xSB2's around the hus)

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Re: [slim] Transporter Bitrate Question

2010-05-31 Thread PencilNeckGeek

Thanks for the replies. I will have to double check all the volume
controls again and report back


-- 
PencilNeckGeek

GEAR: 
Transporter, BELCanto DAC3, PASS Labs X250, LegacyAudio Sig III's,
Wadia i-Transport, Rotel RCD1072, Shunyata VRay  Hydra 6, Shunyata
Python Alpha Helix  Alpha Helix Taipan, Shunyata Diamondbacks,
Ridgestreet Audio Poiema R-v3 Balanced XLR IC's, MIT AVT1 Digital,
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