MQA certification primarily means you pay a license fee and then you can
use the label.
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I think it mainly depends on the size. The big ones (10Ah and more)
usually can do it, smaller ones often can't. It's probably because the
smaller ones have simpler charging logic.
But I've explicitly come across several that were not able to charge and
operate at the same time while I was
drmatt wrote:
> Most of these things can be left charging while you draw power off them
> too. More UPS than battery. Also means you don't have to turn off to
> charge.
Some do but check for it before buying.
I just bought a power bank for a RPi-based radio I built and I had to
buy one that was
volegradele wrote:
> Hi,thx for the replay!I can not play Deezer with iPeng!When I am
> connected on LMS it is all good,but to listen Deezer I must connect to
> mysqueezbox.com,then I cant play/control Deezer on my Transporter,only
> with Transporter standard remote!:(
Two things:
1. To control
I'm sorry, I don't understand what the question is? Do you want to
control the Transporter or your phone (remotely)?
I don't think you can remotely control Deezer's App but controlling
Deezer on the Transporter through iPeng should work, if you run your own
server (and only then) you could also
Oh, you don't have to reach that far. Sonos, for example, does that.
Although they go one step further and completely replace a traditional
DAC with a serialized (DSD-like) digital signal into a speaker with a
low-pass filter.
If you get your maths right this is probably the most promising of
Hm, while you are taking this apart... Has any one of you actually HEARD
this speaker?
I mean... As much as it's audiophile mythology that you have to hear
your power cables to know how you sound as much it is important for
speakers.
I do agree that 3000W is an awful lot of power for an active
What's best is: the thing in the picture is just a standard Kingston
16GB USB stick for 7.50 quid or so.
They didn't even take the effort to re-brand it
So this is the real bargain
Um... No. Trust me, we have just as many of them over here. In the US
their incentives are just higher...
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You never know what we don't know!
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Sorry, the link is in German but maybe Google Translate can reveal all
the marvel of this product to English speakers, too.
It's a USB stick that improves the sound quality of your CD recordings
when you copy them. Just plug it into a USB port on your computer and
then copy the CD to your
"What happened when I did it 8 times just blew my mind!"
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It's not in the firmware, it's in SqueezePlay. Both technically and
really. It's in Playback.lua
It's not overridden per device.
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It's not part of the server, it's part of SqueezePlay. You need to
download the SqueezePlay source code.
The server doesn't contain any client-side code, the firmware is just
used as complete bundle packages and even these are only downloaded at
runtime.
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Interesting. What's ScriptPlay? Hadn't seen that one.
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Ok, that ScriptPlay thing is just for desktop SqueezePlay and overrides
the model name. Irrelevant here.
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darrenyeats wrote:
> Pippin, I've seen such custom tables but are you SURE that SqueezePlay
> uses such a table?
>
Yes, I am sure.
The player even matches gain values coming from the server (e.g. when
using replay gain or fade-in/-out) to the table and picks a matching
gain value from
darrenyeats wrote:
> Dither is still the correct way to do volume control ...! Because I want
> to play anything, over a usable volume range, without worrying about it.
>
> I'll add something here. Though I accept you might live within the
> limits of the SB and Transporter volume controls, I'm
The biggest pitfall obviously being that you might not get the result
you want to get.
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marcoc1712 wrote:
>
> That was a little paradox, but what if you go to the doctor with
> toothache and after some serious examination he said 'it's impossible
> you have toothache, go home and stay well"?
>
As of my experience doctors do that all the time.
>
> At the end, how I have to judge
marcoc1712 wrote:
>
> What's your mind about? shall we start discussing what's the availlable
> options should be?
>
No, I believe it's still to _easy_ to change transcoding settings, not
too complicated. If it was more complicated (such as only allowing
changes in custom-convert.conf), fewer
SBGK wrote:
> so borrowing from Pippin
>
> Packetized network traffic->NIC->Network driver->flac -> sox ->decode
> buffer->play buffer->aplay -> pcm -> kernel -> drivers -> device
>
> There is code to fill a decode buffer and then c
marcoc1712 wrote:
> You posted here something regarding Jitter, are we talking about this?
> I'm not, so any conclusion is irrrilevant here.
>
Now I'm confused. What ARE we talking about??? This whole thread is
about jitter, isn't it?
The _only_ reason I've ever heard of why WAV/PCM would
marcoc1712 wrote:
> a. I'm not asking support for any of your products here.
> b. If a system could be easily broken by fancy settings, people will
> easily find the way. (Murphy law).
> c. If a system could be broken, people will find the way. (a variant to
> the Murphy law).
>
a) This is not
Sorry, just so that I understand what you are talking about: this is
about analog out on an SB+?
This is a general thread so I'm quite sure others are talking about
other setups.
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marcoc1712 wrote:
>
>
> I'm still missing the one that prouf the opposite and - in any case- I
> think they are not 'the answer' to the question.
And I am missing a proof that Nessie doesn't exist.
It's not possible to prove that something doesn't exist.
And this fact is being used by a huge
marcoc1712 wrote:
> Nothing strange in this, they will always do like that. But You know
> they ar esometime rigth just because you don't clearly stated BEFORE it
> was not faseable...
>
> If you did, You could even charge them when you discover they did. But
> if You have asetting in the
marcoc1712 wrote:
>
> a. cut users hands, fight against Audiophiles, teach users they are
> evil...
>
I don't want to "fight" audiophiles. They can do what they want, it's a
free world out here.
I just ask you for the same things you are asking me for:
1. I will say my opinion. I will call
The other way around: how does the data get into the player.
For WiFi it's pretty obvious that PCM is a bad trade because then you
have twice the data rate going through a complex encryption algorithm
instead of half the data rate through the rather simple FLAC so with PCM
over WiFi you increase
The problem for many high-end manufacturers is, that they don't really
sell large volumes of these 25k speakers. No way that you can afford a
wave soldering setup or even have a large enough batch to get it
contracted.
So manual soldering and even there I'd think some of them might have
people
It would be even more interesting to look at some of the HD tracks and
check whether they still contain MP3 artifacts...
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garym wrote:
@pippin, Could you elaborate on this. So my Transporter has a smaller
internal buffer than my Touch or Radio.
Well, it's all about that Net Neutrality thing everybody keeps talking
about.
Yes. I don't know the exact figures for the Transporter but Touch and
Radio use 3MB which
Yes, please let me know. I usually also tell TIDAL then because I know
they are still optimizing their network and can use the feedback.
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krochat wrote:
Are you sure the rebuffering isn't ickstream? I also get rebuffering on
my Touch at certain times, but when the Squeezebox is struggling if I go
to the Tidal PC app, I can play tracks with no problem.
Kim
Do you still see that? Where are you located?
There should not be
Mono mode combines the two signals in the preamp but you are sending
different signals to the preamp through the left and right channel.
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The iPhones, even the older ones, have absolutely no issue with
transcoding. They have powerful floating point processors and vector
units for media processing. In the past, they used to run codecs on a
DSP but they no longer do this because they found that it performs
better on the main
Oh, and this is not relatively inexpensive hardware, too. You can
easily buy two desktop PCs or a pretty powerful notebook for the price
of an iPhone 6
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Oh, ok, yes, of course. I got a bit carried away by answering Mnyb's
post on processing power.
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The processor even on iPad 1 and iPhone 4 is pretty powerful. iPad 1
severely lacks memory and especially graphics memory which means it
moves a lot of memory between regular and graphics memory which hurts
performance.
And iOS 7 has all these effects which eat a lot of GPU performance and
it
Definitely not. They removed the knob when they build a last set of
Transporters from leftover parts and didn't have any knobs left. No new
boards built for that.
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I doubt then really manufactured 15 different versions. Even for one
Transporter will have had pretty low volume
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Candlemass wrote:
Tell it the audio engineers in the studio :p
They are creating the information. That's something else than not
distorting it. After the audio engineer has worked on it the music often
sounds nothing like the raw material he got at all.
Why does it matter if you have a
You did understand me completely wrong. But you are aware how speakers
with multiple drivers actually work, right?
I'm talking Class D amps and digital (matching and crossover) filters
vs. analog amps and analog filters (crossover only). No DSP stuff.
For each speaker you need a separate
Sure, but if you don't use it as an additional device but to replace
analog filters, losses are much lower.
Ideally (my DAC in the speaker) you can do all the processing even
before the DAC. One DAC per channel will eventually get cheap enough,
too.
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Sure. That would be the ideal setup with the lowest losses (you need one
DSP per driver or a DSP powerful enough to process several channels
simultaneously).
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Wow, didn't remember this. Looks like the Transporter indeed measures
quite a bit better, especially the DAC's resolution looks quite
superior. Wonder how it compares to a modern USB DAC.
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Well, now that's a totally different story, isn't it?
However, my experience is that over time when quality of one part of a
system improves then others improve as well: if all your steaming client
can reproduce is 160kbps mp3 there's little sense for high resolution
speakers and so on.
I
Yes, actually that's the biggest change I notice. Comparing an mp3 I
encode today with one from 13 years ago makes such a big difference (and
yes, I do use 320 now instead of 256, hard drives also got cheaper)
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I am less concerned about any hype, I just believe that in the end USB
is the most simple connection type because all components are being
produced in the gazillions, so my guess would be that it's the segment
where you get most bang for the buck.
Plus, I'd hope they are smaller. I'm not really
Yes, but I'm not an audiophile, I just want to listen to good music.
I hope I'm going to be happy with my Transporter for many years to come
but should it ever die, I'll need something with balanced outputs again
and hey, you know, it should be as good as the Transporter, too.
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Oh, I have my own guideline, it's conveniently short:
1. Try to have as few devices in your audio chain as possible. Every
signal processing has losses and you don't get that lost information
back, no matter how hard you try (yes, that dreaded second law of
thermodynamics affects information,
Balanced outputs. Which you need if you want to drive good active
speakers (unless you live in an anechoic chamber) which in turn is what
you want to do these days, at least when you buy new ones.
You'd ned an external DAC for the Touch for that.
Apart from that it's really primarily the looks,
Um... What exactly do they offer for that warranty? They don't repair
Transporters anymore and they don't have stock left. Somehow it also
feels like I would not expect them to give you your money back... Not
that they end up offering to replace it with a radio as they have done
to Touch
jimbobvfr400 wrote:
Yes it's 1 paragraph in a very interesting 5 page article. Worth a read
IMO
Yep. And especially... With a good active speaker design it's not just
cables. If you do this right you don't need (and don't WANT) DACs,
preamps, power amps, DSPs and all that other stuff that
Mnyb wrote:
Pippin was it not you that used Adam active speakers ?
Yes, I do. Although there's certainly much more potential for good sound
quality than what they offer but for the size they have it's a good
start.
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bernt wrote:
http://www.teenageengineering.com/products/od-11/
Right concept but in the speaker design they do pretty much everything
that article condemns. Bass-reflex, putting speakers WITHIN a housing
and so on... It's the same kind of integrated approach but I wouldn't
expect superior
Yea, but if you read the article it's EXACTLY the kind of speaker design
that completely ignores phase and impulse response.
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How about reading the article first ;)
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First of all: WAV means: transport twice the number of bits over the
network which causes twice the load in all your network interfaces (NIC,
buffers,...). If you use WiFi it also means: decrypt twice the number of
bits, a process that needs much more CPU cycles than the simple FLAC
decoding.
I
yep. And one effect of server-side upsampling is a dramatic increase of
bandwidth requirements. Going from 44.1/16 to 192/24 means you increase
the bandwidth required by a factor of 8!
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Don't want to distract this even more, but you are correct, I caught an
additional factor of two for PCM but your video streams are MPEG rates,
I was talking about H.264 which runs at around half the rate.
So it's about the same as a 1080p stream, the ones I looked at here were
all in the 10
I can confirm that WAV actually causes a LOT more load than FLAC
decoding, at least on an iPhone.
Of course, an iPhone will always uses WiFi but then I believe there have
been similar measurements on the SB Touch as well.
Especially is we talk about upsampled material, we are talking about a
LOT
Ah. OK. So how does this interpolation filter work? In the NI link they
show a filter curve that nicely follows the sine wave which will not be
so simple for music.
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I didn't mean to question the sense behind upsampling. I fully
understand why that makes the (analog) filter design easier and the
result better.
But John's argument was that you get a better result by using a NOS DAC
and do the oversampling through sox because the interpolation filter in
sox is
flimflam wrote:
But what are the steps undertaken in re-creating the waveform? Clue:
it's not called a smoothing filter for nothing!
Yea. But that was my point. Unless you know exactly what your waveform
is you are just as likely to AMPLIFY your noise than to SMOOTH your
signal. To really be
OK, but that's not smoothing, that's just low-pass filtering, which
ideally removes ALL effects of the stair-steps.
However, here we are not talking about analog processing BEHIND the DAC,
we talk about digital processing BEFORE the DAC.
And here smoothing is not simple and any kind of
flimflam wrote:
Same thing! Smoothing filter is a specific and recognised term for this
filter - whether you like it or not :-) ! The term is used by many,
Analog Devices refer to it by this name a lot. That the stair steps are
smoothed seems obvious, the term does not mean to imply anything
JohnSwenson wrote:
Let me see if I understand your first question. As long as the highest
frequency of the audio data is small relative to the sample rate (say
40KHz maximum signal frequency for a 192 sample rate) you do not need
much if any filtering. There are going to be very little
Please excuse my ignorance on DAC design and related digital filtering.
While I do believe I understand the signal theory part and the way the
DACs fundamentally work I don't know a lot about how digital filters in
these things are actually implemented.
JohnSwenson wrote:
The amplitude of the
JohnSwenson wrote:
Before getting into details I want to talk about sample rate. The
filters in many DAC chips get simpler the higher up the sample rate is.
For example the chip I'm using in the CSP player has a very simple
filter at 176.4/192 and NO filter at 352.8/384.
So what you
It _is_ the reason, though, why all that dynamic compression is being
done. It comparatively increases the volume of the track.
It's less conclusive than the effect for identical tracks, though
pippin's Profile:
It's coming from ABX tests, there are scientific papers about this. It's
not an urban myth, you are special.
How did you find out? Did you do an ABX Test? This is especially about
loudness differences which are too subtle to be consciously perceived.
cdmackay wrote:
This doesn't explain *why* it might sound better, though?
We know it shouldn't sound (much) worse, and these tests seem to support
that, but why might it sound better?
The way most of these tests are being done is that you write a set of
rules (we can compress in this
Archimago wrote:
I think the results will be surprising for most. I was certainly
surprised as I checked the survey day to day and started to see the bias
/ significance building strongly a couple weeks into the test!
Bottom line - most respondents thought the lossless Set sounded
Archimago wrote:
Hi Pippin; great work on iPeng BTW! Been using it for years :-)
On the 1st page of this thread for the Touch measurements MEASUREMENT:
Logitech Squeezebox Touch (Pt 2), I measured the WiFi vs. ethernet
conditions (16/44 amp; 24/96) using the Touch's analogue output
SoftwireEngineer wrote:
The higher system load is on ipads right ? Have you checked this out on
the Squeezebox itself (which is where this suggestion originated) ? This
probably is related to hardware architecture.
It was on iPad, yes.
But the system load argument has also been brought
Hi, let me chime in for one more question: did I overlook the test for
server-side FLAC decoding vs. FLAC decoding on the touch itself?
I would be really interested in that one, especially also in a
comparison between the WiFi vs. Ethernet performance.
The rationale is that counter to
SBGK wrote:
they can't hear differences the rest of the audiophile world can hear.
Except for in double blind tests, of course
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Chuck Norris can hear jitter.
Nuff said about it.
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Could be that 88 kHz is not supported. I think I remember something like
that from iPeng testing.
I think the Touch supports it.
Doesn't the server transcode? Or are you trying to drive the Transporter
directly somehow?
It should find it and no, the App is not limited to MySqueezebox.com.
banned for life is right, you need to be connected to your WiFi
network, but you said you checked for that.
Which model of Android device is this? There have been some htc models
that had trouble with UDP broadcasts which
That will usually not have been the computer's activity itself but the
screen's.
Old LCD displays used to still be line driven and could even be scanned
from another room (you could make visible what they are showing in
another room). They even developed special fonts to get around the
effect for
Depends.
For studio albums I couldn't care less about lossless since they are all
mixed for mp3 these days anyway, so there's no difference.
Live recordings, however, are a different issue.
pippin's Profile:
mlsstl wrote:
Pippin, guess we'll just have to agree to mostly disagree regarding the
impact of piracy on the music business. You seem to want to
substantially discount the impact, preferring to assign blame to various
aspects of corporate greed.
No. That was absolutely not my point.
I
It's not piracy vs. convenience, it's also go f... yourself, there's
other things I can do vs. convenience.
I don't pirate stuff, but if I can't get it easily and convenient, I've
got enough other things to do. And the same thing is true of others.
There are more media available yet the day still
I beg to differ.
It's not a good article. It's actually a very bad article. I agree with
the general direction making clear that a free culture is bad for
musicians and that they have to make money and that it's not OK to just
pirate music but the article is full of stereotypes, false claims and
mlsstl wrote:
I'm rather confused. You slam the specific Sparklehorse example and then
admit the article's author probably knows much more than you about the
details. I don't understand the logic of claiming this is a bad example
while at the same time admitting the author almost certainly
Not used it anymore for more than 15 years :)
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Are you trying to use up as much bandwidth as possible or what is this
good for?
Upsampling 44.1 material to 96k will at best gain you nothing but more
likely just degrade your sound quality.
pippin's Profile:
If by sluggish you mean slow, it's probably because the server has
to create the artwork in the sizes iPeng uses. Should go away on the
second use, artwork is being cached by both iPeng and the server, just
don't clear amp; rescan your library too often.
magiccarpetride wrote:
Is there a way to get rid of this annoying latency of the iPeng for
iPhone?
So
a) you are comparing different devices. The network connection
characteristic could be different. How is the Logi App behaving on your
iPhone? There are really only two possible reasons
Sorry, that's nonsense. PlugPlayer and SqueezeCast look and act very
different.
In iPeng Party the menus look and work the same, except for the color
scheme, you just have reduced functionality because you can only add
tracks to the playlist, after all, that's the purpose of iPeng Party.
But you
True. I'm always so lazy when typing on the iPhone
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Indeed. You can also have a kind of preview on iPeng for iPad by
downloading the free iPeng Party App.
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to fuel that again...
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XLR for both.
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in the background.
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