DAC +Dolby + Viper4Android V4a? - ZTE Axon 7 Questions & Answers

Trying to achieve maximum audio quality from the axon 7 and was wondering what setup you guys are using?
Has anyone successfully flashed Viper4android?
What streaming services would be best to take advantage of the Built in Dac?
How do we know if the DAC is working? 0_o
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So after failing on the first try I restored using the twrp backup and gave it another shot and success!
what you'll need:
1. Root and backup before doing anything (duh)
2. Then install Busy Box. Open Busy Box app and hit install on the bottom left. after it shows a successful install DON'T reboot.
https://play.google.com/store/apps/details?id=stericson.busybox&hl=en
3. Install SElinuxModeChanger. Open SElinuxModeChanger and hit Permissive option
http://forum.xda-developers.com/devdb/project/dl/?id=12506
4. Now install Viper4Android apk .Open Viper and you'll be prompted to install a4v driver. Click Yes and after it will say to reboot but DON'T reboot.
http://www.mediafire.com/download/ar5men9o5ar7inb/ViPER4Android_FX_v2401_A4.x-A6.x.apk
5. Open Dobly and make sure its off.
6.NOW reboot and your all set.
Everything is working nicely together Dobly and viper works just like it should.

Xshooter726 said:
Trying to achieve maximum audio quality output from the axon 7 and was wondering what setup you guys are using?
Has anyone successfully flashed Viper4android?
What streaming services would be best to take advantage of the Built in Dac?
How do we know if the DAC is working? 0_o
Click to expand...
Click to collapse
I just got it working after reading your post. I installed it by installing busybox(I believe this is needed, but not completely sure), then setting selinux to permissive, and then installing V4A 2.4.0.1.
I can't recommend any streaming services as I only listen to music locally on my device, but I will say it sounds MUCH better than Dolby Atmos when it's properly configured. I would recommend just turning off Dolby Atmos when listening to headphones. If you're listening to the loudspeakers V4A doesn't do too much so I would leave Dolby Atmos enabled in that case.
If you want to know if V4A is working, hit the menu button in the top right corner of the screen and tap on driver status. It should say the status is normal. If driver status says abnormal then it didn't install correctly.

scottk135 said:
I just got it working after reading your post. I installed it by installing busybox(I believe this is needed, but not completely sure), then setting selinux to permissive, and then installing V4A 2.4.0.1.
I can't recommend any streaming services as I only listen to music locally on my device, but I will say it sounds MUCH better than Dolby Atmos when it's properly configured. I would recommend just turning off Dolby Atmos when listening to headphones. If you're listening to the loudspeakers V4A doesn't do too much so I would leave Dolby Atmos enabled in that case.
If you want to know if V4A is working, hit the menu button in the top right corner of the screen and tap on driver status. It should say the status is normal. If driver status says abnormal then it didn't install correctly.
Click to expand...
Click to collapse
Installed V4A the same way you did and its working great. Only problem I'm having now is that my dolby keeps crashing when opening the app.
Is your Dolby working ok with Viper?
If so, are you able to upload a back up of your Dolby app and Dolby Service file? Mine must of got corrupted when installing Viper.

Xshooter726 said:
Installed V4A the same way you did and its working great. Only problem I'm having now is that my dolby keeps crashing when opening the app.
Is your Dolby working ok with Viper?
If so, are you able to upload a back up of your Dolby app and Dolby Service file? Mine must of got corrupted when installing Viper.
Click to expand...
Click to collapse
Mine is working fine. I was actually surprised it worked so flawlessly. Have you tried uninstalling it to see if Dolby started working again? Do you think having Dolby enabled/disabled when installing the V4A driver would have an effect? I can't remember if mine was on or not. I'm just trying to think of differences that could have happened between our installs.
I wouldn't mind uploading the Dolby app and Service file, but I'm not quite sure how. Do you just want the two Dolby backups from a Titanium Backup or do you need something more?

scottk135 said:
Mine is working fine. I was actually surprised it worked so flawlessly. Have you tried uninstalling it to see if Dolby started working again? Do you think having Dolby enabled/disabled when installing the V4A driver would have an effect? I can't remember if mine was on or not. I'm just trying to think of differences that could have happened between our installs.
I wouldn't mind uploading the Dolby app and Service file, but I'm not quite sure how. Do you just want the two Dolby backups from a Titanium Backup or do you need something more?
Click to expand...
Click to collapse
Yeah, not really sure what went wrong. Think you could be right about having it enabled when flashing Viper. I've been going at it for hours trying to get it working again lol. I've tried installing other versions of Dolby, Uninstalling Viper and wiping catch but still nothing.
If you could upload your titanium back up that would be great. It might be a unique version of Dolby that comes with our Axon's.

Xshooter726 said:
Yeah, not really sure what went wrong. Think you could be right about having it enabled when flashing Viper. I've been going at it for hours trying to get it working again lol. I've tried installing other versions of Dolby, Uninstalling Viper and wiping catch but still nothing.
If you could upload your titanium back up that would be great. It might be a unique version of Dolby that comes with our Axon's.
Click to expand...
Click to collapse
Sorry, it's going to be a bit longer. I don't have enough posts yet to link anything lol. I will when I can though.

scottk135 said:
Sorry, it's going to be a bit longer. I don't have enough posts yet to link anything lol. I will when I can though.
Click to expand...
Click to collapse
lol No problem man. Thanks for trying to help me out any ways. Its really not a big deal not having dolby when you have viper installed. Been messing with some Viper settings and the difference in audio is Huge.

Dolby also force closes for me after installing V4A. Kind of disappointing, as I really found the surround sound effect to be quite nice. I'll just go back to using Dolby for now.

dennis96411 said:
Dolby also force closes for me after installing V4A. Kind of disappointing, as I really found the surround sound effect to be quite nice. I'll just go back to using Dolby for now.
Click to expand...
Click to collapse
Updated the OP with steps on how I got it working.

Xshooter726 said:
Updated the OP with steps on how I got it working.
Click to expand...
Click to collapse
Working fine now. Thanks!

Okay, slight problem. The HiFi toggle now has no effect in any player, even the stock one. So now I'm stuck using the Snapdragon DAC.

Can you please try to install arise sound mod 3.3 and report back if the sound is now utter perfection

Arise 3.3 working perfectly here.
Sent from my ZTE A2017U using Tapatalk

Persianhawkes said:
Arise 3.3 working perfectly here.
Sent from my ZTE A2017U using Tapatalk
Click to expand...
Click to collapse
Does it further improve the sound to a noticeable amount and can you still use Dolby & the hifi dac option.
Thank you for your reply btw

CampfireVibés said:
Does it further improve the sound to a noticeable amount and can you still use Dolby & the hifi dac option.
Thank you for your reply btw
Click to expand...
Click to collapse
For me it does improve the sound noticeably. Dolby doesn't work and haven't tried the hi-fi option. From what I've gathered Dolby only works on stock music and Poweramp. Arise 3.3 works everywhere.
Sent from my ZTE A2017U using Tapatalk

So, I installed arise numbers 3.5 and viper works fine (viper driver says processing: yes), but Dolby crashes every time I try to open it. Is dolby still required after viper is installed?

Has anyone tried VLC player yet? I tried it and it seems to work just fine with the Hi-Fi option and Dolby Atmos.
It has also great functionality: plays music (stereo/5.1) and video, supports subtitles, etc.
EDIT: ah, and I didn't root. Just installed the app. I can fiddle with Dolby settings while music is playing; video pauses when I open the settings while playing, but resumes after I close.

strifej said:
So, I installed arise numbers 3.5 and viper works fine (viper driver says processing: yes), but Dolby crashes every time I try to open it. Is dolby still required after viper is installed?
Click to expand...
Click to collapse
no, when you have properly set up viper, the dolby app is useless anyway

I'm tired of not being able to use the music player I've used the past couple years, plus Dolby Atmos turns on and off randomly each time I start my music player, or plug in my earbuds - sometimes from song to song....So I'm ready to bite the bullet and instal V4A or maybe even Arise 3.5?
When I do that, I understand that Dolby Atmos won't work.....But would it hurt anything if I uninstall it, or disable it, using TitaniumBackup?

tele_jas said:
I'm tired of not being able to use the music player I've used the past couple years, plus Dolby Atmos turns on and off randomly each time I start my music player, or plug in my earbuds - sometimes from song to song....So I'm ready to bite the bullet and instal V4A or maybe even Arise 3.5?
When I do that, I understand that Dolby Atmos won't work.....But would it hurt anything if I uninstall it, or disable it, using TitaniumBackup?
Click to expand...
Click to collapse
I've got Dolby and V4A both working just fine. The problem with Dolby seems to happen when A4V is flashed when Dolby is active. You could try turning Dolby off and freezing it. Would also be a good idea to back up the 2 Dolby files in TitaniumBackup.

Related

[Q] How to get Viper4Android and Poweramp to work.

Hi Folks,
I would appreciate your help please. I'm trying to get V4A to work with Poweramp without success. I've scoured XDA and the internet for solutions.
I'm rooted running stock with Art. Has anyone running Art been able to get this combo to work? If so please help!
Thank you!
I've managed to get it to work except I have to manually turn off Poweramp's eq everytime I plug in my headphone jack or switch to BT. Anyone know how to permanently turn off Poweramp's eq? Thanks!
P.s problem solved!
I managed to turn off the pa eq! It came to me in a eureka moment as I awoke this morning. You have to unassign each preset that you have set for headphones, speaker or Bluetooth. So make sure non are showing and eq will stay off!
The combination of PA with V4A is stunning!
Unassign the presents in Poweramp or V4A?
Rose Commander said:
Unassign the presents in Poweramp or V4A?
Click to expand...
Click to collapse
In Poweramp and don't use Poweramps eq.
I am an S3 user and google'd this kind of problem and found your thread but still no luck and lastly tried to watch a short youtube vid and voila.. maybe this can help you too
http://youtube.com/watch?v=tfNMkYOsCSc
Now that I've upgraded to lollipop unfortunately I can't get V4A to work. Anyone on lollipop have any joy?
Tuffcheez said:
Now that I've upgraded to lollipop unfortunately I can't get V4A to work. Anyone on lollipop have any joy?
Click to expand...
Click to collapse
Get SElinuxchanger if your rom is set to enforcing, set it to permissive and you have to run V4A in compatibility mode - that way it works for me, however the sound quality is MAYBE not so good in this mode, in normal mode I get better sound quality I think
Same Problem
Hey guys, for the last few weeks Viper4android worked fine on my poweramp, however suddenly the processing status was set to "no".
I did all the necessary steps to enable V4A,like disabling equalizer,direct volume control etc. , so I don't know what the problem could be. V4 A does work on other music players though. But still as I prefer it to work on my Poweramp, please help me if possible to find a solution.

Dolby Atoms just FC'd (crashed) now it won't open? (n7 Player issue)

So, I just opened Dolby Atmos while my N7 music player was going, then I got the "Unfortunatly, Dolby has stopped". I've cleared all the data and cashe, restarted the phone and I get the same error.
I just spent over 2 hours downloading all my apps and setting it up, now I think the only option I have is to do a factory reset :crying:
Anyone have any tips on how to get it working again? It sounds really thin and lifeless without Dolby on.
[EDIT]
I just factory reset my phone, gonna start over.....ugh
tele_jas said:
So, I just opened Dolby Atmos while my N7 music player was going, then I got the "Unfortunatly, Dolby has stopped". I've cleared all the data and cashe, restarted the phone and I get the same error.
I just spent over 2 hours downloading all my apps and setting it up, now I think the only option I have is to do a factory reset :crying:
Anyone have any tips on how to get it working again? It sounds really thin and lifeless without Dolby on.
[EDIT]
I just factory reset my phone, gonna start over.....ugh
Click to expand...
Click to collapse
Oh yeah. Dolby Atmos and certain music player apps can't be used at the same time.
Go to Settings > Application Manager/Apps > All > Dolby, and force stop. Then wait and when it becomes available clear data. Restart the phone and see if Dolby will load then
icenight89 said:
Go to Settings > Application Manager/Apps > All > Dolby, and force stop. Then wait and when it becomes available clear data. Restart the phone and see if Dolby will load then
Click to expand...
Click to collapse
Tried that, didn't work... Only fix was uninstalling n7 music player, then doing that with Dolby.
So there seems to be a compatibility problem with n7. Poweramp locked it up, but didn't fc it.
Shuttle +, stock, and Google music all work fine
[UPDATE]
For what it's worth..
I tried replicating the issue so I could give the steps on how to get it working again.....So I downloaded n7 player again, started playing music and then went to Dolby and turned it on. I got the "force close" and went through my steps of removing n7, then going to the Dolby app (in settings) and doing a force stop, clearing the data and cashe - then rebooted and tried opening Dolby again, it did NOT open! I messed around with it for about 30 minutes and even went into the stock recovery and tried wiping the cashe (I think that was what I did). It reset all my apps and data, but didin't delete anything - Dolby still didn't open, so I had to perform a 2nd factory reset!
Luckily, I did find the backup data and backup apps in the settings, which took my setup down to about 25 minutes vs 1.5 hours.
***(NOTE TO SELF) - Don't install n7 music player, again!
tele_jas said:
[UPDATE]
For what it's worth..
I tried replicating the issue so I could give the steps on how to get it working again.....So I downloaded n7 player again, started playing music and then went to Dolby and turned it on. I got the "force close" and went through my steps of removing n7, then going to the Dolby app (in settings) and doing a force stop, clearing the data and cashe - then rebooted and tried opening Dolby again, it did NOT open! I messed around with it for about 30 minutes and even went into the stock recovery and tried wiping the cashe (I think that was what I did). It reset all my apps and data, but didin't delete anything - Dolby still didn't open, so I had to perform a 2nd factory reset!
Luckily, I did find the backup data and backup apps in the settings, which took my setup down to about 25 minutes vs 1.5 hours.
***(NOTE TO SELF) - Don't install n7 music player, again!
Click to expand...
Click to collapse
Yeah, Dolby isn't compatible with every music app. I turn it off while listening to power amp as it locks up. But with YouTube or Google play music, I turn it on. Good things there's a quick toggle
Sent from my ZTE A2017U using Tapatalk
osmosizzz said:
Yeah, Dolby isn't compatible with every music app. I turn it off while listening to power amp as it locks up. But with YouTube or Google play music, I turn it on. Good things there's a quick toggle
Sent from my ZTE A2017U using Tapatalk
Click to expand...
Click to collapse
I would forget to toggle and would jack it all up again.. Already performed 2 resets last night, not ready for a 3rd until the bootloader gets unlocked and I flash a custom ROM :highfive: ! So I'll just stick to compatible music apps. ....I like Shuttle+, just not as much as n7 or PowerAmp
Does anyone know if Dolby Atmos has any problem with VLC player?
celticchrys said:
Does anyone know if Dolby Atmos has any problem with VLC player?
Click to expand...
Click to collapse
Just tried it, works fine with VLC!
Dolby Atmos works with Neutron.
What about PlayerPro?
Spotify also works
I think the said apps must be updated by their devs or is it something related to Dolby itself?
If some brave soul with the phone is willing, I'd say re-test power amp.
Right after installing it, without playing any music, go to audio > advanced tweaks, and disable both direct volume control and Bluetooth Direct Volume Control. Just a guess, but similar to how ViperAudio functions, disabling those should make power amp play nice. Not sure about n7 thou, never used it.
icenight89 said:
If some brave soul with the phone is willing, I'd say re-test power amp.
Right after installing it, without playing any music, go to audio > advanced tweaks, and disable both direct volume control and Bluetooth Direct Volume Control. Just a guess, but similar to how ViperAudio functions, disabling those should make power amp play nice. Not sure about n7 thou, never used it.
Click to expand...
Click to collapse
Lol......I'm not brave enough! My phone has been running flawless now since Friday, but Thursday I had to do 2 factory resets... Not ready to "test" and have to do a 3rd just yet.
Maybe later this week, or weekend? I really miss n7, but I kind of forgot how nice (and simple) Shuttle+ is
Dolby Atmos works with Poweramp Alpha Build 703.
Just an update.... Dolbly Atmos no longer FC's on the B27 build while using n7, it just doesn't turn on at all when n7 is installed. The stock EQ works on n7, but you lose the system wide EQ of Dolby Atmos.
I wish there was a way to completely disable the EQ inside n7 player and just use Dolby Atmos. It shows "off", but somewhere in it's code it has something that Dolby Atmos recognizes and won't turn on until it's completely uninstalled.
tele_jas said:
Just an update.... Dolbly Atmos no longer FC's on the B27 build while using n7, it just doesn't turn on at all when n7 is installed. The stock EQ works on n7, but you lose the system wide EQ of Dolby Atmos.
I wish there was a way to completely disable the EQ inside n7 player and just use Dolby Atmos. It shows "off", but somewhere in it's code it has something that Dolby Atmos recognizes and won't turn on until it's completely uninstalled.
Click to expand...
Click to collapse
n7 Player October 19th release - UPDATE
Now, Dolby Atmost disables when the player is on and as long as it's in the recent apps list.... If you close the player, clear it out of the recent apps and make sure it's swiped out of the notification bar, then Dolby will work.
I tried turning off the n7 graphic EQ and other EQ's.......Dolby still didn't work. I then found a setting under "other" (still in the EQ menu) that had the Dolby options (Music, Movie, Talk, ect...)... When I set it to "Music", it sounded really good, but when I tried to open Dolby Atmos to adjust it, Dolby Atmos crashed....So I don't think it's the same "Dolby" and may be the reason behind all the conflicts. I had to uninstall n7 completely to get Dolby Atmos to work again.
Getting frustrated with this... I like Shuttle+ and I also found Rocket Player for $3.99 in the Amazon app store.....But I miss my n7 Player.
Foobar also works very well. I'm using it along with VLC, Spotify and Youtube for my media needs, and every app works with dolby.
disable 10 band eq in n7 it will work

Equalizer apps not working...

3rd party equalizer apps will not work with this phone for some reason. The stock one (audio effects) is terrible and only works with Google Play Music, not other streaming apps.
Is there a way to get these to work? I have tried with stock rom and rooted stock rom with no luck. I'm open to running a custom ROM if that is what it takes.
Thanks for any help.
Works fine in Poweramp
MrBelter said:
Works fine in Poweramp
Click to expand...
Click to collapse
poweramp's equalizer doesn't seem to work either. I have tried Google Play and Slacker Radio. Neither one were impacted by poweramp settings.
Certainly works here mate although it is only going to affect things played via Poweramp obviously (UK SIM free 32GB with 3GB RAM)
MrBelter said:
Certainly works here mate although it is only going to affect things played via Poweramp obviously (UK SIM free 32GB with 3GB RAM)
Click to expand...
Click to collapse
So this doesn't address the problem. How do you get equalizers to work universally with audio apps? Old versions of Android had no such problems. Is this a Nougat issue or a Moto version of Nougat issue?
ViPER4Arise
abeloman said:
ViPER4Arise
Click to expand...
Click to collapse
You need magisk for viper?
As an update for this thread, I found that after rooting you can uninstall the stock Audio Effects and then 3rd party equalizers start to work. They still don't work perfectly but at least changes to the settings start making an impact.
The problem with this is changing the settings wrong causes the sound to completely crackle and go faint. resetting the equalizer settings and rebooting is the only way to get normal sound back.
abeloman said:
ViPER4Arise
Click to expand...
Click to collapse
I finally figured out what this was and it led me to installing Viper4Android FX. Works perfectly. Thank you for this suggestion.

Weak speakerphone after upgrade to Nougat

has anyone here notice a weak speakerphone on Nougat 7.1.1?
i just noticed a significant loss of audio when using speakerphone, even I have successfully installed Dolby Atmos.
my phone is C9000, unrooted. has anyone has a fix on this issue, weak speakerphone on Nougat on C9 Pro?
thanks in advance!
Did you find the solution..?
The main cause I found out is that, I have installed much lower version of viper4android which is for Marshmallows, you have to install viper4android for Nougat. That's the solution, its normal now again.
noknok79 said:
The main cause I found out is that, I have installed much lower version of viper4android which is for Marshmallows, you have to install viper4android for Nougat. That's the solution, its normal now again.
Click to expand...
Click to collapse
But viper4android only for audio what about video sound YouTube etc
Shozaf.shah said:
But viper4android only for audio what about video sound YouTube etc
Click to expand...
Click to collapse
while i'm watching video on youtube, it seems that the viper4android or Dobly Atmos seems to be amplified the audio of youtube app, it is also working on Spotify and PowerAmp for mp3/music.
noknok79 said:
while i'm watching video on youtube, it seems that the viper4android or Dobly Atmos seems to be amplified the audio of youtube app, it is also working on Spotify and PowerAmp for mp3/music.
Click to expand...
Click to collapse
So it means viper4android and Dolby Atmos works on everything like YouTube audio video etc can u please give me a link to download these 2 app viper % dolby..?
Phone can not power ON
Hello , I use a Samsung C9 pro SM-C9000, I tried making calls and it failed to connect so I decided to restart the phone, The phone did not come up again, I checked and chercked, I charged it over night. It still did not come up. please who can assist.
Thanks

[question] anyone used viper4android on p8lite ?

I recently bought a pair of beats earphones and I found that our phone doesn't have guts to deliver outstanding audio quality. I searched on internet for mods and read about viper4android as the best one. Now my question is this
Has anyone used viper4android on this device ??
If yes then please give feedback about its performance
I used viper4android in the past, it just work normaly without any problem (Better than the default audio driver)
Note: It will consume a bit more battery than normal
I've used V4A on this device, and it's pretty great (far better than the default and even the DTS audio feature in Huawei's music player). Of course, how good it is depends on your configuration. It's a pain to install, though (need to have root, SELinux set to permissive; and even then the audio driver installation feels like a gamble). So yeah, it's great, if you can get it to work. I've had more luck installing one of the audio mod packs, something like Divine Beats, but they come with a bunch of bloat and sound far worse out of the box.
tloz said:
I've used V4A on this device, and it's pretty great (far better than the default and even the DTS audio feature in Huawei's music player). Of course, how good it is depends on your configuration. It's a pain to install, though (need to have root, SELinux set to permissive; and even then the audio driver installation feels like a gamble). So yeah, it's great, if you can get it to work. I've had more luck installing one of the audio mod packs, something like Divine Beats, but they come with a bunch of bloat and sound far worse out of the box.
Click to expand...
Click to collapse
And what about dolby atmos...??
hbilalshah said:
And what about dolby atmos...??
Click to expand...
Click to collapse
I've only used Atmos for music (apparently it's better for movies to emulate surround sound on a stereo setup) and didn't like it compared to V4A. Music sounds blown out and there isn't much to configure to make it sound better, besides turning it far down/ off.

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