yashsingh1/xdaforums huggingface dataset:
[Android Head-Units] ElmoTheDestroyer:
HI

All of the bad sound quality issues I've read about in regards to various Chinese Android head units seem to be related to the internal amplifier/chip from what I can gather.

If you use the pre-outs and run a good quality external amplifier, is the pre-out signal clean enough to sound good, or does it still sound bad, just with more power behind it? :)

Thanks!

--ElmoTheDestroyer
[Android Head-Units] edit:
Joying has these new units with some sort of enhanced amplifier and EQ that at least on paper look way better what other Chinese units offer... in fact no other Chinese manufacturer made the effort to offer something better... all go the same route... basic and cheap so kudos for Joying that they are trying something different.

Now we need confirmation from buyers that the new amplif is indeed better....
[Android Head-Units] ElmoTheDestroyer:
Yeah, I was looking at picking one of those up, I'm just curious, if I'm not happy with how that sounds, if using a good external amp will actually provide "really good" sound quality vs. the internal amp. I know that using a crappy preamp source can give pretty bad results even on a good amp, but at the same time, the preamp section of these units might be clean enough to provide a good usable signal to an external amp.

Though it would be cool if the new internal amp Joying is using is actually good! :) Be nice to not have to spend money on an external amp if I can avoid it...
[Android Head-Units] edit:
Don't set your set your hopes way too high, after all we are talking about 300-400$ units here. If the sound quality is the top priority these are not the ones to look at, with or without an external amplif. Very good sound quality is expensive. Most (like me) pick these up for the convenience of having an navigation, backup camera, access to various streaming apps and so on... the list is long. My original Ford headunit is head and shoulders above these Chinese units when it comes to sound quality, FM Radio reception/ sound quality.... but it also lacks so many features that you find in a modern headunit that I find them useful enough to give up on the original headunit high sound quality.
[Android Head-Units] ElmoTheDestroyer:
lol, yeah, I'm not expecting super high quality sound... I have an older android unit in my truck now, so I know how it feels to have crappy sound.. :) Just debating if it's worth spending the money on an external amp to help things out... Not sure if it'd be worth the expense/trouble to install, or if it would just make crappy muddy sound louder.

Love the convenience of these units though, especially compared to my 20 year old stock CD player, talk about a huge technology update!

Suppose I'll just get one of these new Joying units with the new digital amp and hope for the best...

Thanks again for the info!
[Android Head-Units] pounce:
I have one and should have it running in the next week. It's my understanding that if you enable an external amp with the new units the surround sound is disabled and the old app is enabled. In other words you lose all the fancy adjustments if you use an external amp. I have a few cars and one of them will use an external amp and I'm only just hoping for less heat from the new design. On another car I'm hoping to bypass the original amp with the new unit and drive it right from the joying unit.

Of course sound is pretty subjective so I'm doubtful even if I say its better that that is meaningful to anyone else in their car etc. A the end of the day I like decent sound, but the android functionality is my primary need. One of my cars is a Honda Element. This thing has so much road noise a person might be throwing their money away if they went with premium quality.

400 bucks can either be a lot for someone or less significant for others.
[Android Head-Units] CadillacMike:
well now the Sony Android Auto unit is down to $400. I was actually never unhappy with the sound of my Joying, but holy **** the sound is dramatically improved with the Sony:

https://xdaforums.com/android-auto/...-xav-ax100-t3647891/post73238321#post73238321

However, I do miss the full functionality of Android, so I'll be going back to either Joying or Seicane. But after having that Sony, i may look into adding an amp or a DSP or something to try to get that sound
[Android Head-Units] CadillacMike:
i got the new Joying with the Amp and DSP, and I think it sounds pretty great.
[Android Head-Units] pounce:
Separate amp or the new class D amp internal?
[Android Head-Units] CadillacMike:
It has the internal amp, one with the gold plate on the back
[Android Head-Units] edit:
Can you please tell us more? Maybe compared to the Sony?

The old Joying is ok as long as you install Viper.
[Android Head-Units] dj-clark:
Do not compare onder units with Joying Intel based units...

I have all amplified on my car, with Joying 2Gb Intel unit (not the new ones with digital amplifier), but applyied some on stock audio cars and sound is not worst than pioneer, kenwood, sony 100-200€ units.

But to made the sound better, disable LOUD and on Car Settings app, on the code protected menu, on balance sound option, put the sound bars on 0 (zero). Now you can volume up without distortion and the sound will be more clear.
[Android Head-Units] CadillacMike:
I got the install done very late last night.

So I only got to listen on the way in to work, and I don't have everything set up yet. But I think it sounds about as good as the Sony.
[Android Head-Units] CadillacMike:
Beast Mode activated

Here are some pics
[Android Head-Units] szyszafmx:
Can you please share .APK for this amplifier app ?
[Android Head-Units] 96carboard:
No, the problem isn't with the amplifiers. The amplifiers they install may be somewhat small, but they're not bad units. The problem is in what they send TO the amplifiers, which will be exactly the same if you use an external amplifier.

All that an amplifier actually does, is makes the sound LOUDER. If the sound that you are amplifying is full of noise, artifacts, and clipping, then those *painful* bits of sound will also be amplified.
[Android Head-Units] merdok:
I know this thread is a blast from the past, but in searching xda i am having a hard time finding if any of these android headunit make clean sound out the RCA.

I have a Sofia unit from about 2 years ago, and have never been able to get rid of whine of the engine across rpm range (especially if engine is running with headlights on) i have a good grounding kit under the hood, quality 4 gauge power and ground to amp, tested PAC SNI-1 Noise Isolators on both front and rear RCA, have even tried a Axxess AX-ANR1000 Power Noise Filter. All to no avail.

Is there any units that are better for clean output?
[Android Head-Units] 96carboard:
Filtering noise out of a system like that can be a bit of a daunting challenge.

There are a ton of different places where the noise can be brought into your radio from your car;

1) ANY electrical connection between your car and your radio. This includes power+, power-, and even all the different *signal* wires, like ACC, headlights, reverse, etc.

2) RF. This is a really challenging one to deal with, because if your alternator is blasting out a whole bunch of RF noise at a frequency in the range of 20-40,000 Hz, and if that RF gets picked up by an audio wire pre-amplifier, then the amplifier will take that noise, amplify it, and play it on your speakers.

You've tried a power noise filter.

Have you tried connecting the ACC line to the filtered side of that filter instead of the ignition? Have you tried disconnecting ALL of the other signal lines coming into the radio?

Now about the RF part.

Here is the thing. If you're using the pre-amp audio outputs, then that means that you are bringing the pre-amp audio signal OUTSIDE of the protection of the metal box (faraday cage).

The SNI-1 ground loop isolator that you've tried isn't going to do a damned thing if your problem is RF noise. In fact, it is an idiotic part altogether since all it actually does is it converts a signal from one ground reference to a possibly different ground reference. Instead of that, what you should be doing is making sure that there is no potential difference in the ground reference level of the two parts being connected -- specifically, the radio, and the amplifier.

Two things you can do to help with this;

1) Add a big cable from the amplifier chassis to the radio's metal box.

2) Use the highest quality and SHORTEST audio cables possible.

Also... have you confirmed that the amplifier you are using isn't actually the source of the noise?
[Android Head-Units] merdok:
Thank!

I can confirm it's not the amp itself by a headphone to rca cable from my phone into amp w/o noise.

1.) I need to try running a wire from amp ground to cage of hu. Think better to attach to ground of the case or attach to powerline filter? Going to test with bridge both wires of premium speaker wire. That should be plenty right?

2.) only wires that are a bit longer than needed are the rca. Might be 2ft slack because amp is under passenger seat.

---------- Post added at 02:07 PM ---------- Previous post was at 01:24 PM ----------

Wow I think the wire from amp to hu case is going to be the fix! I never thought of that or needed in my years.
[Android Head-Units] JAR99:
Hello,

I have the same problem "permanent noise in my Android unit". If I understand well, you have solve the problem with a wire from amp to HU. Could you explain more about this fix or a diagram?

Thks a lot
[Android Head-Units] ExtremeMOD:
I mod these units as a bit of a hobby, drastically changing both hardware and software to boost the performance and sound quality to a level of proper hi-end units, and must tell you that the issues you are facing are mainly related to hardware.

Yes, you should always have noise suppressors installed on the 12V line as well as clip-on ferrite rings on the cables but that is many times just isn't enough.

The built-in amplifier YD7388 (sometimes advertised as TDA7388) is absolute garbage. The pre-amp outputs are badly shielded and produce high noise levels due to poor electronics inside, overheating, magnetic fields etc etc.
[Android Head-Units] JAR99:
Thks a lot. I think I will have forever this annoying noise 🤦
[Android Head-Units] ExtremeMOD:
Or you can buy a better unit :) At least try with noise suppressor and ferrite rings. That might help considerably.
[Android Head-Units] conandrummer:
I sent you a PM, but I am posting here too just in case.

Hi,

I read your post here: https://xdaforums.com/t/bad-sound-q...-with-good-external-amp.3647498/post-85063135

I have a KSW Android 13 HU and I also use a USB DAC for better audio quality and volume.

Is it just me, or are all these units wired in such a way that phone call audio is always output via their Audio-Out socket (ie. never comes out the DAC)?

If this is always the case, have you found a way to force calls via USB DAC?

Please let me know... I am going nuts here! :) literally.

Thanks mate!
[Android Q&A, Help & Troubleshooting] Looxuser1:
Hi forum members, so when my Huawei Mediapad failed afew months ago I bought a used Orange Tahiti (is a mediapad in different clothing) to replace it not realising it would be locked to Uk Orange network.

So I requested and paid for an unlock code which I received, but it did not work and I'm told because I updated the firmware from android 3.2. to 4.0.3.

So I want to get it back to the original Orange firmware (they won't provide it btw) so i can try that unlock code again.

So some questions if you could help answer all or even one or two please:-

1. Anybody got a OEM/ STOCK - ROM / FIRMWARE for the Orange Tahiti they can send me please, even make a copy from their Tahiti to send? I understand it may be referenced S7-301u V100R001C237B017 (UK Orange)(05010UYB) but the link within the XDADev site does not work.

2. Now assuming i am lucky enough to get a copy of this ROM, other than updating I'm a little unclear on how to go back, can somebody advise me please? I assume i'll need to instal some rom manager tool so hence my next question...

3. Is anyone able to give me a brief and simple overview of how roms and android devices boot and from where, i.e. What is a bootloader, what is fastboot mode, how does Clockworkmod fit in please?

4. I did locate a version of android 3.2. NOT THE ORANGE ONE I Want, and tried to flash the mediapad via the rom on an SD card dload folder but it just gave a "FAIL" notice on screen

Ok so thanks for listening and hopefully this reaches out to somebody who has that Orange Rom image.
[Tilt, TyTN II, MDA Vario III General] tytn2user:
Are there any programs that do NMEA GPS logging without having to go through menu after menu to turn it on and chose a file location.

Each time the program runs I want it to just start logging. It would be good if it would name the file name with the current date.

All programs I have tried seem to have NMEA logging as a afterthought and the process to start it up is clumsy and slow.
[ZTE Axon 7 Questions & Answers] bommelkopp:
Hi,

after trying some viperfx-versions (magisk, recovery flash etc.) i got Viper working using ARISE by this link:

/axon-7/how-to/guide-r-s-e-sound-systems-deuteronomy

I used Mortplayer until now, but there is no effect using viper there.

Pi Music Player works, but changing the player to Mortplayer and back to Pi stops Viper...

Also there is no effect on "Phone speaker", only "Headset"...

I use Resurrection Remix 5.8.3...

Any hints about that?

Thanks

Bommel
[OnePlus 3 Themes, Apps, and Mods] wuflow96:
Hi!

I'm using a rooted OP3 and RR v5.8.3 as custom ROM.

Is there any possibility (f.e. a substratum theme) to change the accent color on Resurrection Remix?
[OnePlus 3 Themes, Apps, and Mods] Ashokk8:
Why don't you use flux or Reverie themes
[OnePlus 3 Themes, Apps, and Mods] if4ct0r:
If you want to just change the accent colors and keep the rest of the look as stock, I'll suggest using the MNML substratum theme. It's free and pretty much should cover your needs.
[Upgrading, Modifying and Unlocking] Spixi:
Can I install android on Nokia Lumia 610 ? If yes, how?
[Android Apps and Games] dopim:
Hello Dear Friends,

I want to share my recent project with you. The game called "Robot Attack"

Download it on Google play at this link : https://play.google.com/store/apps/details?id=com.tbdevlope.tzoukboubkergamd.robotsattack

Please try and let us know your feedback, comments and suggestions!

Thanks In Advance!!

Get it at https://play.google.com/store/apps/details?id=com.tbdevlope.tzoukboubkergamd.robotsattack
[Android Apps and Games] 215tdf:
It looks very interesting.

I wish you success!
[LeEco Le 1S Questions & Answers] sandy_nsk:
Hello Friends,

My LE1s is bricked and seems recovery is corrupted.

It goes in recovery and keeps on rebooting after every 5 seconds. If I press volume down button it goes in fastboot mode but here also it boots every 5 seconds and hence I can not carry any operations , even from SP Flash tool also.

Please help me to get out of this.
[LeEco Le 1S Questions & Answers] ajudi46:
Same problem here.. Did you got solution...???
[LeEco Le 1S Questions & Answers] simransingh165:
you guys need to flash new recovery, i suggest TWRP 3 or 3+

https://www.youtube.com/results?search_query=le+1s+stuck+on+recovery
[Huawei Mate 9 Questions & Answers] SteveP-UK:
I've had my Mate 9 since January 17 and generally no problems (apart from the one I'm about to describe).

I can't seem to get access to to the screen that shows which carriers are available. I can press the the appropriate link 'mobile networks' (see screen shot) but nothing happens apart from the carrier name flashing briefly at the top of the screen.

This is the second time this has happened in the past few months. The first time, the only way I solved it was by hard resetting the phone. I don't really want to have to do that unless I have to.

Anyone have any suggestions on what I might try?

Cheers
[Huawei Mate 9 Questions & Answers] ante0:
Have you updated since January?
[Huawei Mate 9 Questions & Answers] SteveP-UK:
Yes I have. All latest updates as available for UK spec phone.
[Huawei Mate 9 Questions & Answers] SteveP-UK:
Actually, I think I solved my own problem! The latest b190 firmware after installing, gave me access to the the carrier screen. Not sure whether b190 actually fixed the glitch, or whether the process of upgrading the OS has temporarily fixed the problem? We'll see! ☺
[Honor 8 Questions & Answers] SOX_PT:
Hi,

Some of my apps dont get Badge app icons. Gmail and Hotmail are ones i need most.

They alredy worked, anyone can help.

Btw, in the Badge app icons hotmail is on but Gmail doest even show.
[Honor 8 Questions & Answers] SOX_PT:
i know that nova has all that options but i want to solve by not buy nova ;)
[Honor 8 Questions & Answers] SOX_PT:
Thanks anyway :good:

will wait for a promotion :p or if someone can solve this issue
[Xposed General] AverageAmit:
I'm using a rooted Galaxy S7 with lineage os and Xposed framework which works fine. (No magiSK)

There is a way to make the PS4 remote play app believe I'm using a compatible device?
[Samsung Galaxy S8 Questions and Answers] sam4u1983:
I have just bought Samsung galaxy s8 from dubai. To change navigation bar color by selecting from color spectrum is not there in the display setting. I am only getting options for limited color of navigation bar..

can any body suggest y...

Y this double standards by samsung..
[Samsung Galaxy S8 Questions and Answers] clonednull:
Yea they crippled this function some updates ago. :(

I think the reason was the greater risk of screen burn ins with some color combinations.

So they fixed this issue the Samsung way: if you don't know how to fix it correctly -> remove it :silly:
[P8 Lite (2017) Discussion] nonosann:
Hello evrybody,

As everyone know, I guess, the 16 Go of the P8 lite 2017 are far away from being enough for a common use.

I tried this opération : https://xdaforums.com/p8lite/p8-lite-2017-discussion/how-to-extend-storage-using-sd-card-t3614396

Regardless it wass sucessfull, it didn't solved my issue (an update was available, but I couldn't apply it because of the lake of storage).:(

So my question is, could anyone simply explain how to solve this issue ? Rooting the phone and installing another ROM is a solution ? If yes, is it the only one, is there others ?:confused::confused:

Thank you very much for your help !:D:fingers-crossed:
[P8 Lite (2017) Discussion] droidbits:
Hi there.

What size SD card did you use to make the adoptable storage?
[Huawei Mediapad M3 Questions & Answers] magoooood:
I own an outdated Apple iPad 3 Wi-Fi & I'm planning to sell it in favor of the MediaPad M3 (or even the M4 which is around the corners) which looks attractive to me (the 8.4in screen size seems perfect & compact to me, less weight, & less price!).

What worries me is that I'm not sure if the drop in screensize from 9.7 in for the apple to the 8.4 inch for the Mediapad will have negative impact on reading comfortability when viewing Math oriented PDFs in portrait view.

What interests me on the other hand is that the resolution of MediaPad is higher (1600 x 2560 pixels with ~359 ppi pixel density compared to 1536 x 2048 pixels ~264 ppi pixel density for the apple) but I'm not sure if this 'll compensate the drop from 9.7 to 8.4 inches.

I'm asking because I don't have access to MediaPad tablets in local stores, & even if I have, I won't be allowed to copy PDFs to it to see for myself in real.
[Huawei Mediapad M3 Questions & Answers] johje:
Do you have an example PDF you can share? If so, I can look at it with both my iPad Air and the M3 and let you know what I think.
[Huawei Mediapad M3 Questions & Answers] magoooood:
Yes

https://www.pearsonschoolsandfecolleges.co.uk/FEAndVocational/Mathematics/ALevel/EdexcelModularMathematicsforASandALevel/Samples/Takeapeek/9780435519100_takeapeek.pdf
[Samsung Galaxy S7 Questions and Answers] matte900:
Hi,

i have a s7 flat with a stock rom (last update), but if i ll change the kernel stock with anotherone, can i improve my battery? because now it's incredibile how the phone during less (i bought this 1 year ago). Which is the best kernel for the batterY??''

Thank you everyone for the next reply:):):):):):)
[Samsung Galaxy S7 Questions and Answers] Zakaria.R:
You'll have to flash twrp and root in order to do that, and before flashing root you'll have to format data, and formatting data will wipe your phone.

So it depends on how far you are willing to go.
[Samsung Galaxy S7 Questions and Answers] matte900:
ok, but which kernel is the best for the batterY????
[Samsung Galaxy S7 Questions and Answers] Zakaria.R:
In my case I'm not using just a kernel I'm using Superstock rom with Superstock kernel, yesterday I got 9h+ sot (no gaming) if you want root and all be careful, follow every step if you don't want a dead phone in your hand, you will be found guilty of phonicide of first degree ??*♂️? good luck.
[Samsung Galaxy S7 Questions and Answers] matte900:
It is very hard for doing this procedure?
[Samsung Galaxy S7 Questions and Answers] Zakaria.R:
Not if you know what you are doing, and if you are careful and make sure to follow each step.
[Samsung Galaxy S7 Questions and Answers] hanc0ck:
9+ maybe with s7 Edge, but Not with flat!

Im on clean flashed superstock too, but more than 4hours of sot are Not possible.

Everything auto: wlan, 4g, brightness.

No greenify or something else.

Gesendet von meinem SM-G930F mit Tapatalk
[Samsung Galaxy S7 Questions and Answers] Zakaria.R:
I have nothing on auto brightness is on like 15% and I said I do not play games, I have never got under 8h of sot, I have s7 flat.

You can't just say it's impossible, because it depends on one's own usage.
[Samsung Galaxy S7 Questions and Answers] hanc0ck:
I do not play games also. Most of the people using their smartphones like a real "smart" phone. The normal users doesn't turn-off services manually, set brightness at 10% etc. That's the point.

Yes, if you limit everything at your phone, greenify, amplify, no google tracking etc. you can reach higher SOT times. But this has nothing to do how majority*of people use the a smartphone in 2017.

And it's not helpful for new members to told them " if you flash superstock Rom + superstock kernel you will reach 8 hours of SOT out of the box."

That's absolutely bull**** and frustrating for everyone who expects this.

Gesendet von meinem SM-G930F mit Tapatalk
[Samsung Galaxy S7 Questions and Answers] Zakaria.R:
I don't care if it's not helpful for new users, they are not stupid they can measure how much screen on time they will get depending on their usage, the majority of people you are talking about know well that the features they are turning on will suck more battery.

And fyi I don't use greenify or anything.

I will not respond to you after this because it's getting ridiculous.

Ps: if anyone wants to know what I'm doing in order for my phone to last that long feel free to ask.

Regards.
[Samsung Galaxy S7 Questions and Answers] donatinho:
I honestly think you two are right and wrong at the same time: yes, it is possible to have a long SOT, so one can't say it's impossible. AND yes, it's false you will have 9 SOT hours without heavily changing a lot of settings, which may (or may not, it's personal) limit the usage of your smartphone. At the end of the day, it's like a car: the faster you drive, the more fuel you need. I prefer to have a very brilliant screen, a lot of automatic account sync, very good performances than long battery life, but it's ME. Someone else may prefer to have battery last 2 days, maybe they even need it. If we want to stay in topic, the different between the best and the worst kernel in the world is so small that it is hardly measurable. It is much more about usage than software, the battery life.