Re: [SlimDevices: Unix] Announce: piCorePlayer 8.0.0

2022-01-22 Thread edwardthern


I know this is nitpicky, but I noticed that the kernel seems to be
trying to balance/reschedule interrupts when there are none. This makes
the arch_timer create hundreds of thousands-millions of interrupts per
cpu core for no reason.

Any way to compile the kernel to be tickless? Being a pretty much single
purpose OS PiCore is not likely to have many processes to reschedule in
the first place.

CONFIG_NO_HZ_FULL will enable the "full" tickless mode.

And/Or, make it an option in the "bootcodes" menu


36987


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Re: [SlimDevices: Unix] BETA: piCorePlayer6.0.0 - PI4 support

2020-02-21 Thread edwardthern


Interesting read on all the WiFi RPi4 issues.

I have two RPi4's, getting wifi to work has always been a piece of cake.
Maybe flashed a couple dozen times between the two.

Lots of great info, just in case I have an issue one day.

FWIW, I just connect to Ethernet first then use the GUI to start and
connect to wifi. Seems to be a robust method for me at least.


Thank you Paul for all your work, and everyone else too.


~Ed



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Re: [SlimDevices: Unix] BETA: piCorePlayer6.0.0 - PI4 support

2020-02-08 Thread edwardthern


praganj wrote: 
> i did some tests today, and:
> 
> normal kernel > audio kernel (with hats)
> no mmap > mmap (with hats)
> 
> normal kernel < audio kernel (with usb dac)
> no mmap < mmap (with usb dac)
> 
> never compared mmap-no mmap before, thank you for the advice :)

Interesting comparison.

For me these tweaks make the biggest difference esp in the low
end...applied to the audio kernel

https://github.com/dynobot/TinyCore-Sound-Adjustments



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[SlimDevices: Unix] TinyCore-Sound-Adjustments Script

2019-02-02 Thread edwardthern


If anyone is interested I've made a script similar to the one I have for
Debian based systems for TinyCore [PiCorePlayer]

Easy install, clean and easy removal.

https://github.com/dynobot/TinyCore-Sound-Adjustments



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Re: [SlimDevices: Unix] Announce: piCorePlayer 3.5.0

2018-03-24 Thread edwardthern

paul- wrote: 
> Yes it canif you use external wifi or use the RPi3B+ on a 5GHz
> channel, or if you use an usb bluetooth device.  There is a message on
> where to look regarding the internal bluetooth.
> 
> 24780
> 
> 
> What external bluetooth did you try.  It has to have HCI support.  The
> one I tested works just fine.
> 
> 
> There is alot of things that get modified with bluetooth, some of that
> is on purpose.



Your post seems very defensive. My post was not meant to be an attack.

Thank you for your comments.



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Re: [SlimDevices: Unix] Announce: piCorePlayer 3.5.0

2018-03-24 Thread edwardthern

So I tried the Bluetooth speaker support.
Quirky but it works, and most importantly it auto-magically reconnects
if you cycle the power on your bluetooth device

Quirks;

Built-in Wifi and Bluetooth cannot be on at the same time, YET it allows
you to proceed with 'trying' to use Bluetooth without warning or any
built-in messages to prevent the inevitable failure. This can and
probably will lead to frustrations as people think something is wrong,
but just don't happen to check the WiFi tab to turn the internal
bluetooth ononly at that moment will you get a message that wifi and
bluetooth can not be on at the same time.

Suggestion: Give a message that tells users BTHeadset can not be used
when enternal WiFi is enabled...As Soon As they select BTHeadset [if
wifi is enabled] don't have to get so smart as to do it only when
internal wifi is on. A user will read the message and either stop if
they have the enternal wifi on or proceed if they don't.

So next step, get a bluetooth dongle to connect...nope, ain't happening
as the RPi won't power it on.

So next next step, get a wifi dongle to connect to wifi and use the
internal bluetooth. Great it works! Wifi connected and Bluetooth on. Now
power up the bluetooth headset and hit scan. First run, nothing...okay
second attempt and it shows up. Select 'pair' and wait, it paired and
for some reason disconnected the pairing. Okay, second run, scan
againsees the headset and select pair...boom, done! Works great from
that point. Powered off the headset and back on to test, reconnected
without a hitch.

Something else I noticed. When/If I return back to USB or some other
output, everything resets to factory settings.



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Re: [SlimDevices: Unix] Announce piCorePlayer 3.20

2018-03-03 Thread edwardthern

Toonie wrote: 
> Hi,
> 
> Another plea of help I'm afraid :-(  I've been running PCP V3.22 since
> it was released, and generally I've very happy. Certainly very stable.
> So very well done!!
> 
> Toonie.

Yes V3.22 is very stable, been running it at various places around the
house with no problems.

With that said, any news on a version bump?  The Kernel and Firmware
both have progressed quite a bit since last Sept.



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Re: [SlimDevices: Unix] PiCorePlayer cuts out.

2016-11-11 Thread edwardthern

d6jg wrote: 
> Subsonic isn't what I am after. I, like others, am looking for a
> Squeezelite player for use remotely with a built in VPN 

To bad it won't work 

No need to thank me for taking the time looking to see if deitpi had
something that could help you Oh wait, you didn't thank me so never
mind



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Re: [SlimDevices: Unix] PiCorePlayer cuts out.

2016-11-10 Thread edwardthern

d6jg wrote: 
> Why do you think the OP will be "attacked" ? There is debate about the
> pros & cons of PiCorePlayer v Max2play but no one is attacking anyone.
> 
> I have not heard of dietpi until you mentioned it. Had a look and it
> looks interesting. I have had a dig round but I can't find the answer to
> one question - perhaps you know? Does dietpi have a built in PPTP or
> L2TP client ? I know it has an implementation of OpenVPN server but I am
> interested in using a Pi as a remote streamer with a VPN into my office
> where LMS sits.

As you might know there are many ways to skin a cat, especially in the
computer works. That being said it looks like the program Subsonic can
do what you want. Which happens to be one of deitpi easy install
programs



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Re: [SlimDevices: Unix] PiCorePlayer cuts out.

2016-11-09 Thread edwardthern

d6jg wrote: 
> Why do you think the OP will be "attacked" ? There is debate about the
> pros & cons of PiCorePlayer v Max2play but no one is attacking anyone.
> 
> I have not heard of dietpi until you mentioned it. Had a look and it
> looks interesting. I have had a dig round but I can't find the answer to
> one question - perhaps you know? Does dietpi have a built in PPTP or
> L2TP client ? I know it has an implementation of OpenVPN server but I am
> interested in using a Pi as a remote streamer with a VPN into my office
> where LMS sits.

It must be just me then, I'm really scared to post here because I get
torn a new one almost Everytime I post.

About your question I am pretty sure it can do what you want. They have
a lot of software that can be installed through menus but either way
it's just Debian Linux so it can do everything Debian normally does.

Running away now



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Re: [SlimDevices: Unix] PiCorePlayer cuts out.

2016-11-08 Thread edwardthern

jdenver wrote: 
> Anyway of finding out where the problem is through log files etc. but
> since updating to 3.02 the radio cuts out throughout the day, it comes
> back on after about 15 seconds or so but not sure how to track this and
> what to monitor to find the problem.
> 
> Im using the raspberry pi with PiCorePlayer to access the radio through
> a dedicated LMS on another server at home.
> 
> Thanks in anticipation for any advise.

Word to the wise.

You might get attacked and heavily scrutinized in this forum. I would
suggest you use Dietpi instead. Its extremely light on resources and is
fantastically automated in terms of installing squeezelite or other
software. Its rock solid too.

Good luck and don't forget to warm some heavy fire retardent cloths for
all the flames you willl soon be getting here

http://dietpi.com/



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-21 Thread edwardthern

drmatt wrote: 
> No, aggressive and persistently patronising remarks means they  d o n '
> t   c o m e   r o u n d   h e r e   n o   m o r e , truth or otherwise.
> 
> Not that this thread is that bad, really..

That was my plan.



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-21 Thread edwardthern

Julf wrote: 
> Thank you - I think most of us take that as a compliment.
> 
> 
> 
> Indeed. I recommend 'Computer Audiophile'
> (http://www.computeraudiophile.com/forum/), they are much more into the
> placebophile lifestyle, and they could use more eyeballs for advertising
> and sponsorship income.

Yeah I think you're right. CA here I come!!!

Let you guys go back to listening to tin cans and strings.

News flash, copper wire works a lot betterlol.
http://www.specialtyansweringservice.net/wp-content/uploads/learn-make-tin-can-phone/man-talking-on-tin-can-phone.jpg



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-20 Thread edwardthern

JackOfAll wrote: 
> Sorry, can you please speak up? I can't quite hear you. A little
> deaf. Where did I leave my ear trumpet?

Right next to your glasses



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-20 Thread edwardthern

mherger wrote: 
> > I bought a zero zone linear power supply for the RPi. I let it break
> in
> > a bit last night. Went and had a listen this morning before work and
> > WOW! Huge difference in sound, the clarity is through the roof!
> 
> Please post your findings in an appropriate thread in the audiophiles 
> group. Thanks!
> 
> -- 
> 
> Michael

Yeah you're right, I wouldn't call the folks here Audiophile's. 

Better to let people know who can actually hear a difference.



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-20 Thread edwardthern

I bought a zero zone linear power supply for the RPi. I let it break in
a bit last night. Went and had a listen this morning before work and
WOW! Huge difference in sound, the clarity is through the roof!

Can't wait to get back and start working with those kernel latency
settings



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-20 Thread edwardthern

edwardthern wrote: 
> Look at these crazy unsubstantiated, unproven, unscientific, tweaks used
> by Rune Audio...and thats just a small sample of their user sound
> profiles.
> 
> They must be crazyas a fox
> 
> # mod1
> if [ "$1" == "ACX" ]; then
> echo -n performance >
> /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
> ifconfig eth0 mtu 9000
> echo noop > /sys/block/mmcblk0/queue/scheduler
> echo 0 > /proc/sys/vm/swappiness
> echo 100 > /proc/sys/kernel/sched_latency_ns
> echo 10 > /proc/sys/kernel/sched_min_granularity_ns
> echo 25000 > /proc/sys/kernel/sched_wakeup_granularity_ns
> echo 1 > /proc/sys/kernel/hung_task_check_count
> echo 20 > /proc/sys/vm/stat_interval
> echo -1 >  /proc/sys/kernel/sched_rt_runtime_us
> echo 5 > /proc/sys/vm/dirty_background_ratio
> 
> 
> You guys had better run over to Rune and set them straight.

I tried the tweaks above but really didn't like the change in sound for
the kernel latency and granularity. However the swappiness and the loop
had no negative effects. Will have to listen for awhile to really be
sure. Right now the bass his harder and I get way more air around the
instruments and vocals.

I might go back and apply the kernel latency mod but change the values
to be a little less aggressive. Best thing to do is to start at the
default and make small adjustments.



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-19 Thread edwardthern

Julf wrote: 
> Nobody is trying to listen by using reasoning or measurements, but many
> of us are trying to actually understand and verify what is going on
> instead of just assuming things.
> 
> 
> 
> Again a rather poor and misleading analogy - they might not know
> precisely (for a rather strict definition of precisely) why Tylenol
> relieve pain - but they do know it does, thanks to thousands and
> thousands of controlled experiments.
> 
> 
> 
> What haven't people reported? Anyone can report anything, and if your
> understanding of electronics is on the level of "they all have the same
> stuff insidecap, resisters etc" it must all seem like magic to you,
> so of course you resort to "magical" explanations. 
> 
> Anyway, this horse is pining for the fjords thanks to excessive
> flagellation. If you want to continue this discussion, I suggest you do
> it in the "audiophile" subforum that exists precisely to protect other
> parts of the forum from stuff like this.

Sorry I'm no longer going to reply to your posts. I refuse to continue
to be sucked into stupid arguments about this subject.

Have a great day..



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-19 Thread edwardthern

mherger wrote: 
> >> I agree, so are people who try to "Listen" by using some form of
> >> reasoning or looking at measurements.
> >
> > Nobody is trying to listen by using reasoning or measurements, but
> many
> > of us are trying to actually understand and verify what is going on
> > instead of just assuming things.
> 
> Don't you guys think you're far enough off-topic to move along?
> 
> -- 
> 
> Michael

Thank you

This thing has gone way off road into the woods and down the mountain



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-19 Thread edwardthern

Julf wrote: 
> Indeed. That is precisely how computers, amplifiers and other systems
> are designed - by trying random things and seeing if the result happens
> to work. All that "understanding the technology" siliness is so
> over-rated...

I agree, so are people who try to "Listen" by using some form of
reasoning or looking at measurements.

Bottom line, use your ears and let them tell you if something is better
or not.

For all the nay-sayers. FYI...to this day they don't know exactly why
Tylenol relieves painjust recently they have started to develop a
'theory' or a guess.



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-19 Thread edwardthern

Mnyb wrote: 
> That's not a real argument :D audiophilia in general has been broken for
> several decades , it once was a respectable hobby now turned to a cult ?
> manufacturers are not immune they often willingly participate in the FUD
> .

Well thats your POV.

I've been in audiophilla for decades and IMO its been just fine. Its
grown and become more refined, the first sight of this was decades ago
when the zip cord speaker wire was replaced by better, purer copper and
silver.

Granted some people still use zip cord and apparently some people can't
even hear a difference when using coat hangers.

As with all things, either you grow and evolve or you don't. Dinosaurs
didn't;)



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-19 Thread edwardthern

mudlark wrote: 
> So tell me what the above code does to improve sound quality. Just to
> educate this person and hopefully many others. just remember I have a
> brain and I can read.

You listen and make your own list. Better yet run over to Rune audio and
tell them to make a list for you...



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-18 Thread edwardthern

Look at these crazy unsubstantiated, unproven, unscientific, tweaks used
by Rune Audio...and thats just a small sample of their user sound
profiles.

They must be crazyas a fox

# mod1
if [ "$1" == "ACX" ]; then
echo -n performance >
/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
ifconfig eth0 mtu 9000
echo noop > /sys/block/mmcblk0/queue/scheduler
echo 0 > /proc/sys/vm/swappiness
echo 100 > /proc/sys/kernel/sched_latency_ns
echo 10 > /proc/sys/kernel/sched_min_granularity_ns
echo 25000 > /proc/sys/kernel/sched_wakeup_granularity_ns
echo 1 > /proc/sys/kernel/hung_task_check_count
echo 20 > /proc/sys/vm/stat_interval
echo -1 >  /proc/sys/kernel/sched_rt_runtime_us
echo 5 > /proc/sys/vm/dirty_background_ratio


You guys had better run over to Rune and set them straight.



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-18 Thread edwardthern

JackOfAll wrote: 
> Is it audiophile steak?

Yep!!

And its full of Voodoo magic tweaks...;);)



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-18 Thread edwardthern

DJanGo wrote: 
> wait...
> 
> 
> 
> Thats your initial post.
> Lets face it:confused:
> >   > 
  - There is no localboot.sh in /opt
  - There is no need to sudo a startupscript
  - "The" source clearly talks about audio recording
  > > > 
> hmm who is funny ???
> :rolleyes:

Meanwhile I'm eating my steak and enjoying how good it tastes



Yummy!!

LOL!!!



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-18 Thread edwardthern

Julf wrote: 
> I am sure that will help your argument to no end...
> 
> 
> 
> I am sure we appear ridiculous to someone not used to strict logic and
> scientific rigour.. 
> 
> 
> 
> False argument. "John says shining a blue light to a steak makes it
> taste better. John describes what he tastes and ask if anyone wants to
> try." would be more appropriate.

Scientific rigor?

Are you a scientist? Or do you just pretend to be one on there
Internet?

Blue light? Who said anything about shining a light?



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-18 Thread edwardthern

Mnyb wrote: 
> My sugestions about a rational testing method ? Was that negativity ?
> 
> You can sugest a completely of the chart thing to test , who knows
> really .
> 
> But it is the choice of testing methods that matters most .
> 
> There is also this , if you make an extraordinary claim you better have
> the corresponding extraordinary evidence.
> If would just accept that jumping of building would kill me without a
> peer reviewed paper :)
> 
> But for example differences between digital sources are non existing in
> controlled tests ? At the moment .
> ( these digital sources of course playing the same flac file or CD )
> 
> In my own system i can say that my Meridian DVD-A player my Pioneer
> bluray or my saueezebox SB3 or my Squezeebox Touch probably performs
> identical with 16/44.1 the A/B testing i did was not at the highest
> standard ABX with severL people involved . But this was an expected
> result .
> 
> If ive found large diffrences aka a very unexpected result I have to
> investigate much more before claiming fanstic results with my noodling ?

What claim did I make?

I said what I heard ( period )

I made no claims as to what anyone else would hear or any claims.

You guys are off the chart



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-18 Thread edwardthern

mudlark wrote: 
> For may people testing an improvement to audio equipment works one way
> and one way only. Theory > testing >conclusion. It does not go Idea >
> testing > conclusion.
> 
> As an example, there is no rational theory that goes along the lines of
> "low latency means better audio quality". If you can come up with a
> rational reason why reduced latency improves audio then you have half a
> chance of attracting any attention. Otherwise you will have to accept
> the fact that an idea doesn't make a theory. 
> 
> The "just try it" way of doing things will never include rational
> tweakers.
> 
> I am happy to see the random stuff around, but where it affects the
> mainstream I get very, very defensive. 
> 
> I see random stuff as go faster stripes. They may tweak your ego, but do
> nothing for performance. 
> 
> Finally, I also defend the gold tap brigade. Life would be boring if we
> all had the same attitude to life.

You guys are so funny.

I put a link of the source so it's not a idea, theory out even a message
from God.

I have nothing to gain or loose from people trying out or not.

You people would rather spend 20 minutes on a post vs the whole 10
seconds out would take to copy and paste it.

Fine by me...



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-17 Thread edwardthern

Julf wrote: 
> Should have gone for that, would have been more exciting than electrical
> engineering.
Yes of courselol



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-17 Thread edwardthern

Julf wrote: 
> If you see rational questioning of your claims as "negativity" I would
> suggest you don't have much experience with academic peer review...
Yes I'm one of the few who have never written peer reviewed journal
article. Of course on the internet everyone seems to be a scientist,
engineer, scholar, etc

Let meet guess you're a aerospace engineer?



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-17 Thread edwardthern

valnar wrote: 
> This gave me a good chuckle.  Thanks.  It's been a while since I read
> stuff like this over at Audioasylum.com

Did I mention the soundstage. It was huge!



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-16 Thread edwardthern

With so much negativity towards these simple little tweaks I suppose its
a general consensus that the "Tweaks" section and "Beta" should be
removed from PiCore.

At least removed until proper DBT testing can be done to Prove its
validity?



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-12 Thread edwardthern

bambadoo wrote: 
> Tried the tweak. Cannot say I noticed any difference.

Great!

Thats all I asked, is for people to try it and report back.

So how long did it take you to copy/paste and listen?

Hopefully it took you less time than to make a post.

I'm thinking if you put it in the tweaks section you need to restart
squeezelite. But either way if you heard nothing then so be it.

FYI, I wont win the Nobel Peace Prize or get anything either way, my
motives are 100% altruistic. All I ask is for people to try it and
report back their honest opinion by making it as quick, easy and
painless and possible.



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-10 Thread edwardthern

I find it interesting that so much time is spent writing about this yet
-zero- time has been spent on just copying and pasting the one line into
PiCore and having a listen.

Are people afraid they might actually hear a difference and have to
resort to a DBT to prove it to themselves they are not hearing what they
think they are hearing?

400+ views and not a single taker:confused:



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-10 Thread edwardthern

Julf wrote: 
> Indeed. Let's listen to our ears, and only our ears. Not our eyes, nor
> our preconceived notions or expectation biases. 
> 
> Unfortunately the only way to do that is a controlled double-blind test,
> something audiophiles hate. Because it forces them to use just their
> ears. But yes, that is why there is a separate "audiophile" section of
> this forum...

Don't want to go off on a tangent.

I wanted to post in this section because this information pertains only
to PiCore.

Double blind tests etc are used to prove something I'm not
interested in a Nobel prize or proving anything to anyone. If someone
tries a 'tweak' and feels they need to do a DBT in order to prove it to
themselves they are hearing what they think they are hearingwell
thats on them.:eek:

I ate some really good steak this weekend, fortunately I didn't need a
DBT to prove to myself it tasted better than the last steak I ate.:D



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-10 Thread edwardthern

I'd prefer not to go down the "Audiophile" hole.

Lets just keep an open mind and listen to our ears.

:p



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-10 Thread edwardthern

Apesbrain wrote: 
> The file is called "bootlocal.sh".  Can you please post back with the
> entire contents of this file as you are now using it?  Mine has no line
> breaks so it is difficult to determine where to insert any new commands.
> Thanks.

Hi Apesbrain

Yes its indeed called bootlocal.shmy mistake in getting the name
backwards.

I used WinSCP to add the necessary lines at the bottom of the file. 

Perhaps the best thing for users to do is to use the "tweaks" section
instead of digging into the innards of piCore.

By adding this string to the User Command line on the tweaks page
someone could just apply it and disgard it without ssh'ing into piCore.

sudo chrt -f -p 99 $(pidof ksoftirqd/0); sudo chrt -f -p 99 $(pidof
ksoftirqd/1); sudo chrt -f -p 99 $(pidof ksoftirqd/2); sudo chrt -f -p
99 $(pidof ksoftirqd/3)



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-10 Thread edwardthern

mudlark wrote: 
> I am very firmly of the view that pCP should be at the centre of the
> player. 
> 
> It should remain what I can only call mainstream and also enable
> experimenters to explore possibilities. 
> 
> I strongly support that plan that "things to try" should remain just
> that rather than being integrated into the standard player.
> 
> Multi-core processors must really bother the "triers". which core is
> faster and other sleep destroying thoughts?


Hi mudlark,

After thinking about it I do agree with you...from a professional point
of view a product must stay within its own vision and course. Changing
it will lead to confusion and an overall product that is not coherent.

However listening to your user base [who experiment with your product]
can lead to great advances and improvements at little to no cost/effort,
as the user base are the free testers. Over time ideas from the user
base
after lots of testing etc can get incorporated into the overall vision
of a product.

With that said, I also agree that the 'things to try' section should
indeed remain only that...

Its not 'just' multicore processors that encourage us 'triers' to
explore the limits but simply the question 'what if' fueled by the
desire to take one more step for curiosities sake.



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-09 Thread edwardthern

Greg Erskine wrote: 
> hi edwardthern,
> 
> I was planning to add to the web interface these kind of "things to try"
> to make it easy for people to give them a whirl. So keep them coming, I
> am taking note.
> 
> regards
> Greg

Wow thanks!!:D:D

I sure will, its really nice to see people at least receptive to try new
things. I'm hoping that we could get enough subjective votes [thumbs up,
so-so or thumbs down] to either get some of this baked into PiCorePlayer
or maybe even a pull down menu item to envoke different levels of
tweaks/adustments. I realize everyones hearing perception and systems
are different, along with musical tastes so these things could be just
the final icing on the cake to dail a system into perfection [or closer
to it]

Thanks again and look forward to more...I will also try to post links
like I did above so people can have some reference data.



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-09 Thread edwardthern

Man in a van wrote: 
> I can understand the desire to reduce latency when making a recording
> but does it really matter during playback?
> 
> I know some software players operate in a buffer mode, but again, I
> don't know how effective or important this is.
> 
> In fact, I don't understand any of it fully, but if I get some time in
> the next week or so (and if I remember) I'll have a go.:eek:

Appreciate you keeping an open mind on the matter.

The debate about playback vs recording latency has been had for a very
very long time.

At the end of the day, your ears will tell you what they like:cool:



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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-09 Thread edwardthern

Also, I use a host of other tweaks/modifications in my Linux setups. I
usually spend a long time [months] adjusting parameters etc. before I
either use them or abandon them in lieu of stock settings.

Some of the things I consider are; understanding exactly what the tweak
does at the kernel level [for kernel level tweaks], what kind of CPU and
the number of cores, and the overall balance of the system. This is to
say, sometimes maxing a parameter out or reducing one like 'period time'
creates negative results. Like everything in life its a give and take
situation [yin/yang] balance and the middle-way is best.

21257


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Re: [SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-09 Thread edwardthern

Cut-Throat wrote: 
> Can you describe what are these 'positive changes' that you have heard?

Hi

To my ears I can hear a bit more depth and separation in the music.
Highs seem less stressed [not like they were really stressed before
though] but they seem more airy and clear. Lows seem to be a bit more
punchy. Overall everything is very relaxed yet very clear and airy.

YMMV of course. I tested it out on two different systems and heard
similar results.

BTW, changing the priority to 99 not only gives the audio thread
priority over all else but also changed them to FIFO [first in / first
out]



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[SlimDevices: Unix] PiCorePlayer 3.02 tweaks

2016-10-09 Thread edwardthern

First off I would like the thank the PiCorePlayer team for all their
hard work for this excellent player!!!

I am wondering if the team would entertain the idea of optimizing PiCore
for audio.

For example the audio threads as outlined in ALSA's Low Latency howto
wiki article
http://www.alsa-project.org/main/index.php/Low_latency_howto

FWIW, I have been using these examples for a very long time in all of my
Linux based audio setups and have heard positive improvements/changes.

I updated the /opt/localboot.sh file to show the following for increased
audio thread priorities. I really do like what I am hearing.

sudo chrt -f -p 99 $(pidof ksoftirqd/0)
sudo chrt -f -p 99 $(pidof ksoftirqd/1)
sudo chrt -f -p 99 $(pidof ksoftirqd/2)
sudo chrt -f -p 99 $(pidof ksoftirqd/3)



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Re: [SlimDevices: Unix] Announce: piCorePlayer 3.00

2016-10-01 Thread edwardthern

Don't want to cause trouble here and arguments about a/b tests etc.

If people are in this much doubt it might be easier for me to just leave
well enough along and enjoy my tweaks/mods etc by myself.


please disregard my previous post and carry on

Thank you



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Re: [SlimDevices: Unix] Announce: piCorePlayer 3.00

2016-10-01 Thread edwardthern

Julf wrote: 
> I guess there is still the implication/expectation that a) it makes a
> difference, and b) that it is an improvement. I assume you didn't do a
> double blind comparision?

Yes

Of course instead of actually listening people will try to apply reason,
look for test results, white papers, comparison notes, reviewers
comments etc.

Either way enjoy:D



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Re: [SlimDevices: Unix] Announce: piCorePlayer 3.00

2016-10-01 Thread edwardthern

Man in a van wrote: 
> What are we tweaking?:confused:

Overall latency at the kernel level.

Of course everything is harmless and can be easily removed [reverted
back to normal] by simply taking out the lines and rebooting.



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Re: [SlimDevices: Unix] Announce: piCorePlayer 3.00

2016-10-01 Thread edwardthern

aussiebob wrote: 
> After upgrading to 3.02 I can no longer access the setup menu when
> ataching the device to a screen. I've tried picoreplayer, setup but no
> luck. Isn't that option available any longer?
> 
> Robert

could it be that the ip address has changed?



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Re: [SlimDevices: Unix] Announce: piCorePlayer 3.00

2016-10-01 Thread edwardthern

Hello I have been some what of a lurker to this forum but a long time
user of picoreplayer and computer audio as a whole for the past 12+
years.

I just wanted to share a small user tweak that can be added to the
"Tweak" settings in Picoreplayer.

If you use please report your findings

Place in the "user commands" section in the "Tweaks" tabthen
reboot.

sudo echo 100 > /proc/sys/kernel/sched_latency_ns
sudo echo 10 > /proc/sys/kernel/sched_min_granularity_ns
sudo echo 25000 > /proc/sys/kernel/sched_wakeup_granularity_ns



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