[APP] Official ViPER4Android Audio Effects (FX v2.5.0.5) - New Features & 7.0 Support

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jmxc23

jmxc23

Senior Member
Dec 18, 2012
2,239
1,383
New York
Zeuszoos said:
Hey, thanks for ll the info! I learned more about the subject from you in one post, than I have reading posts for the last 3 days! :)

I didn't think about a search for just this one place. Maybe because I don't see it. Too tiny in a mobile browser on my phone? All I see at the top says it's for searching the "forums" plural.

Any chance of you pointing me to your post number? <lol>

Thanks again for the info!
Click to expand...
Click to collapse

For Kit Kat you have to install XIFI as a system app. As for Lollipop the FX instructions also applies to XHIFI.
 
A

adf2009

Senior Member
Mar 24, 2012
132
44
Zeuszoos said:
How does one make "SELinux Mode" "permissive"?

If you tell me (or point me to) what that entails (how it's done) I'm technical enough to do it. I've just never heard of it, except for in this thread. Is it only something that can be done with Custom ROMs? Or OEM ROMs too?

Thank You.

From my lightning slow Samsung Glxy SGH-M819N Mega
Samsung OEM KK 4.4.4 ROM, Philz Touch Recvry v6.48.4

http://reflectiveresonance.com/
Click to expand...
Click to collapse

Just install below apk.
 

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jmxc23

jmxc23

Senior Member
Dec 18, 2012
2,239
1,383
New York
galahadUSA said:
The developer discontinued it!!!
It's not up to you to understand it so just except it and move on.
I had xhifi installed with v4a on 5.1.1 Blisspop and currently on 5.1.1 CyanideL. I removed xhifi as it's not as feature rich as v4a.
I learned how to install it from this very thread so dig if want it so bad and stop
Click to expand...
Click to collapse

1. XHIFI was discontinued because its features was implemented in FX.
2. It never was intended to be feature rich as its purpose was to make the audio sound like it came directly from the recording studio.
3. @zhuhang even stated that FX's Viper Clarity and Viper Bass pales in comparison to XHIFI which is one reason why some people went and install XHIFI.
 
Zeuszoos

Zeuszoos

Senior Member
Aug 9, 2012
1,091
211
jmxc23 said:
For Kit Kat you have to install XIFI as a system app. As for Lollipop the FX instructions also applies to XHIFI.
Click to expand...
Click to collapse
I did install it as a System App, set permissions, build.prop edit, etc..

FX works fine. It's XHiFi that won't work for me in KK.

I'm also (thanks to a link from the Admin) investigating in another "questions" thread about this issue.

I really wish the Devs had made it work at least in KK before stopping development of XHiFi, since I believe it was out at the time. :)
 
J

jt23738

Senior Member
Sep 6, 2014
78
4
kvevand63 said:
Check your /system/lib/soundfx. If you don't see the lib file for XHiFi (the driver), open the XHiFi apk and look in its assets folder for the correct lib file for your processor/android version (I use the Neon jb version on my device). Copy and paste to /system/lib/soundfx, be sure to delete the jb or ics following the so at the end of the file name and reboot. Re-install driver from XHiFi. Double check /system/etc/audio_effects conf and see if the entries for XHiFi are present. If not, you will have to make the entry yourself. I am using both V4A and XHiFi installed in /system on CM11 ROM with no problems. I hope this helps you. The same can be used for troubleshooting driver install problem with V4A.
Click to expand...
Click to collapse

How do you make an entry for xhifi in audio_effects conf?
 
N

nik007rock

Senior Member
Apr 12, 2012
475
92
Hyderabad
help unable to get to work on 5.1.1
driver installed but shows
status =abnormal
audio format = unsupported
 

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Zeuszoos

Zeuszoos

Senior Member
Aug 9, 2012
1,091
211
dinaps86 said:
No I mean a kernel for your phone I don't know what the OEM is I have a sprint galaxy s4 and a sprint galaxy note edge devs have worked on the s4 but not so much the edge
Click to expand...
Click to collapse
The OEM ROM simply means it's from (in my case) Samsung. I.e., it's not a Custom ROM. I was saying that I have never seen a Kernel put out by a developer to replace the Kernel that comes with a phone's OEM (Original Equipment Manufacturer) ROM. And I have searched a lot! There are things that a Custom Kernel would allow me to do, like OverClocking my CPU, while knocking the Voltage at each Frequency down, to keep the heat down while running faster, for one thing.

But hey, if you know where these Custom Kernels live, then please tell me, so I can go knock on their door. I'd be very grateful! :)
 
Zeuszoos

Zeuszoos

Senior Member
Aug 9, 2012
1,091
211
adf2009 said:
Just install below apk.
Click to expand...
Click to collapse
Okay. And I assume that creates an app that I need to run?

Also, this will work for me, even though I am NOT running a Custom ROM? Because I am running the Samsung Stock KitKat 4.4.4 ROM (Rooted).

I don't mean to be a pain. I just would like to be sure that you know my setup before I run anything that makes changes in something that goes down to the core of the OS, you know? :)

Thank You!
 
C

cdzo72

Senior Member
Mar 19, 2011
3,113
1,023
51
Heredia
Samsung Galaxy Note 8 (2017 Phone)
Samsung Galaxy S9+
Zeuszoos said:
Okay. And I assume that creates an app that I need to run?

Also, this will work for me, even though I am NOT running a Custom ROM? Because I am running the Samsung Stock KitKat 4.4.4 ROM (Rooted).

I don't mean to be a pain. I just would like to be sure that you know my setup before I run anything that makes changes in something that goes down to the core of the OS, you know? :)

Thank You!
Click to expand...
Click to collapse
YOU need to start doing some reading and stop being a PITA.
 
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souler456

souler456

Senior Member
Jan 18, 2013
1,320
627
Calamba, Laguna
Can someone help?

I'm currently using Poweramp v2.0.10 Build 579, and I can't use V4A with it. I'm switching between Normal and Compatible Mode on V4A but still no success. Can some Poweramp users here tell me how to get it work? :confused:


:D :) ;) :good:
 
dinaps86

dinaps86

Senior Member
May 20, 2012
596
118
Long Island, New York
Zeuszoos said:
The OEM ROM simply means it's from (in my case) Samsung. I.e., it's not a Custom ROM. I was saying that I have never seen a Kernel put out by a developer to replace the Kernel that comes with a phone's OEM (Original Equipment Manufacturer) ROM. And I have searched a lot! There are things that a Custom Kernel would allow me to do, like OverClocking my CPU, while knocking the Voltage at each Frequency down, to keep the heat down while running faster, for one thing.

But hey, if you know where these Custom Kernels live, then please tell me, so I can go knock on their door. I'd be very grateful! :)
Click to expand...
Click to collapse
(Biting tounge) what service provider do you have sir/miss? (Not trying to be a wise guy don't know your sex by a screen name) and what kind of phone is it? I.e 'Sprint Samsung Galaxy S4 [sph-l720]

---------- Post added at 07:58 AM ---------- Previous post was at 07:55 AM ----------
souler456 said:
Can someone help?

I'm currently using Poweramp v2.0.10 Build 579, and I can't use V4A with it. I'm switching between Normal and Compatible Mode on V4A but still no success. Can some Poweramp users here tell me how to get it work? :confused:


:D :) ;) :good:
Click to expand...
Click to collapse
Hey bud I'm not being mean scroll down do you see those arrows click on page 1 and read from top to when the creator of the forum stops writing it explains it
 
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souler456

souler456

Senior Member
Jan 18, 2013
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627
Calamba, Laguna
dinaps86 said:
Hey bud I'm not being mean scroll down do you see those arrows click on page 1 and read from top to when the creator of the forum stops writing it explains it
Click to expand...
Click to collapse

It says "Disable their own sound effects". Already did that inside Poweramp, but still no V4A effects. Tried rebooting. Ugh... :(

Any Music Players you can suggest that has Media Utilities (for Zooper Widget use) support and can work with V4A? :confused: Cause I give up on Poweramp LOL... :p


:D :) ;) :good:
 
Zeuszoos

Zeuszoos

Senior Member
Aug 9, 2012
1,091
211
dinaps86 said:
(Biting tounge) what service provider do you have sir/miss? (Not trying to be a wise guy don't know your sex by a screen name) and what kind of phone is it? I.e 'Sprint Samsung Galaxy S4 [sph-l720]

---------- Post added at 07:58 AM ---------- Previous post was at 07:55 AM ----------


Hey bud I'm not being mean scroll down do you see those arrows click on page 1 and read from top to when the creator of the forum stops writing it explains it
Click to expand...
Click to collapse
Okay, I had no idea that a persons carrier made a difference when it came to the kernel they use. And not all phones belong to a specific carrier. Sprint uses a different format, so yes, their phone names start with "Sprint". But the name of my phone does not start with "MetroPCS", even though they are my carrier (now owned by T-Mobile).

FYI, if it helps, my info is in my signature below and yes, the Model # does tie back to MetroPCS, but that's only because they put their apps on it before selling it. Their name does not appear anywhere on the phone and it's a basic, Unlocked GSM phone (bought it from them that way), that I can use with any GSM Carrier.

I think maybe Sprint has tainted your view of phones. <lol>

Seriously, I understand why you might ask. And maybe different kernels are used for all I know. And if it helps, there it is. But also, in my sig, you'll see that I'm not using an OTA KK from MetroPCS. I got the ROM from Samsung and installed it using Odin. That would affect the Kernel too, no?
 
dinaps86

dinaps86

Senior Member
May 20, 2012
596
118
Long Island, New York
souler456 said:
It says "Disable their own sound effects". Already did that inside Poweramp, but still no V4A effects. Tried rebooting. Ugh... :(

Any Music Players you can suggest that has Media Utilities (for Zooper Widget use) support and can work with V4A? :confused: Cause I give up on Poweramp LOL... [emoji14]


:D :) ;) :good:
Click to expand...
Click to collapse
Hold on i know it's here its a simple fix I'll Google it for you

---------- Post added at 08:38 AM ---------- Previous post was at 08:31 AM ----------
souler456 said:
It says "Disable their own sound effects". Already did that inside Poweramp, but still no V4A effects. Tried rebooting. Ugh... :(

Any Music Players you can suggest that has Media Utilities (for Zooper Widget use) support and can work with V4A? :confused: Cause I give up on Poweramp LOL... [emoji14]


:D :) ;) :good:
Click to expand...
Click to collapse
Go to post #4301 (page 431) of the official v4a thread

---------- Post added at 08:41 AM ---------- Previous post was at 08:38 AM ----------
Zeuszoos said:
Okay, I had no idea that a persons carrier made a difference when it came to the kernel they use. And not all phones belong to a specific carrier. Sprint uses a different format, so yes, their phone names start with "Sprint". But the name of my phone does not start with "MetroPCS", even though they are my carrier (now owned by T-Mobile).

FYI, if it helps, my info is in my signature below and yes, the Model # does tie back to MetroPCS, but that's only because they put their apps on it before selling it. Their name does not appear anywhere on the phone and it's a basic, Unlocked GSM phone (bought it from them that way), that I can use with any GSM Carrier.

I think maybe Sprint has tainted your view of phones. <lol>

Seriously, I understand why you might ask. And maybe different kernels are used for all I know. And if it helps, there it is. But also, in my sig, you'll see that I'm not using an OTA KK from MetroPCS. I got the ROM from Samsung and installed it using Odin. That would affect the Kernel too, no?
Click to expand...
Click to collapse
I just threw up from confusion....sprint hasn't tainted anything......that's my carrier thats.....why I used it as a reference watch this brb
 
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bcrichster

bcrichster

Senior Member
Jun 6, 2013
1,220
837
souler456 said:
It says "Disable their own sound effects". Already did that inside Poweramp, but still no V4A effects. Tried rebooting. Ugh... :(

Any Music Players you can suggest that has Media Utilities (for Zooper Widget use) support and can work with V4A? :confused: Cause I give up on Poweramp LOL... [emoji14]


:D :) ;) :good:
Click to expand...
Click to collapse
I'm using Apollo v1.1 on KK - Flawless. Don't know anything about "media utilities" tho..

Gratefully Sent from my rooted N9510 JollyRoger 4G
 
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  • 3685
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    [APP] Official ViPER4Android Audio Effects (FX v2.5.0.5) - New Features & 7.0 Support

    If you want to share at another forum, do not include download links, redirect them to download here.

    To ROM Makers who already included or wish to include V4A in your ROM. Click HERE.

    Donations intended for V4A Development, please DO NOT send to zhuhang.jasper@gmail.com
    V4A Project Donation account not available yet.
    ​

    Sticky News
    Development Progress: Inactive
    Remarks:-
    Past events:
    21 Jan 2013 (Alert - Illegal V4A Theft / V4A Clone)
    Recently, we found an android PAID app very similar to ViPER4Android.
    Judging by the screenshots, its definitely a copy of our app.
    We will do an investigation on this following paid app.


    Please do not mistaken this above app as V4A. ViPER4Android is always free. Do not fall for this and do not buy it.

    Help to share this post to alert others.

    16 October 2013
    Hello everyone!

    Now, our website is ready! You can now register as a subscriber here.

    Celebrating the launch of our website, ViPER4Windows also officially released.
    Head over to ViPER4Windows page for description and instructions.

    You can download all ViPER related contents at downloads page. This includes the V4A, V4W and IRS at the moment.

    12 October 2013
    Our English website is in progress. Its a wordpress based website. Its up, but not ready with posts. We'd be very busy lately so we do not have time to write pages and posts.
    Here's the link: http://www.vipersaudio.com/blog

    You can register an account at our website and make comments on our news and posts there. Right now, registration is disabled. We will make announcement when its ready. Cheers.

    6 October 2013
    - Added v2.3.0.1 FAQ (OP#3)
    - Added proper bug report instructions (OP#3)
    - Updated bug list (OP#3)
    - Updated troubleshooting for v2.3.0.1 (OP#3)
    - Updated General FAQ (OP#3)
    - Updated requirement for Rom makers (OP#5)
    - Updated OP index (OP#1)

    30 September 2013
    Whole OP Updated from 1st post to 4th post.
    Instructions, Change logs, Downloads, Bugs, FAQ, Troubleshoot, Settings explained, default settings (replace recommended settings)

    20 September 2013
    This time, we are on XDA Developer TV!
    A very nice quick review right here by Jimmy McGee's Android App Review.
    http://www.xda-developers.com/andro...-deserve-with-viper4android-xda-developer-tv/

    4 September 2013
    We finally made our way to the XDA-Developers Portal!!
    Hoooray!! Million thanks to the news writer. ;)
    http://www.xda-developers.com/android/tweak-your-mobile-audio-with-viper4android-audio-effects/

    Official Website
    ViPER's Audio Official Website: http://www.vipersaudio.com/blog
    ViPER's Audio Official Chinese Forum: http://forum.vipersaudio.com/

    Social
    Like our Facebook Page here! >>> https://www.facebook.com/vipersaudio
    Join ViPER's Audio Facebook Group here! >>> https://facebook.com/groups/vipersaudio.en/
    ViPER's Audio Global QQ Group: http://xdaforums.com/showpost.php?p=44506830&postcount=4586

    UNOFFICIAL V4A available in Google Play Store. (Not maintained by us)
    http://xdaforums.com/showpost.php?p=45217407&postcount=5689

    OP Index:
    1. About Us // Description // Key Features // Development Progress // Donations // Open source
    2. Instructions // CPU Driver List // Change Logs // Downloads
    3. Bug list // Proper Bug report // Troubleshooting // FAQs
    4. V4A Profiles // Popular effect simulation profiles // FX and XHiFi Settings Explained // Default V4A settings
    5. For ROM makers
    6. Signatures // Userbar // Banners
    va-official3.png

    About ViPER's Audio
    See here: http://vipersaudio.com/blog/?page_id=11

    Software Descriptions
    Version: FX version 2.5.0.5 (active) / XHiFi version 2.1.0.2-1 (discontinued)
    Codename: (FX version) Beautiful / (XHiFi version) X-Factor
    Compiled date: September 1,2016 / September 4,2013 - Official Release
    Operating environment: Android 2.3 / 4.0 / 4.1 / 4.2 / 4.3 / 4.4 / 5.0 / 6.0 / 7.0
    CPU platforms: ARM (ARM CortexA8 or higher), x86(Atom/i3/i5/i7)
    Language: English (US) / Simplified Chinese / Traditional Chinese / more

    ViPER4Android FX
    FX is the main control panel of ViPER’s Audio with all popular ViPER’s Audio settings.

    ViPER4Android XHiFi (Stopped)
    XHiFi has less settings compare to FX. It has superior audio reconstruction which mainly used for restoring lossy audio quality.

    FX Key Features
    ★ NEW: FET Compressor ★
    New compressor / limiter simulating operation of FET circuits.

    ★ NEW: Quad-Channel Convolver ★
    IRS support extends to 4-channels. *Requires special IRS files*

    ★ AnalogX ★
    Richer and warmer sound by simulating the sound signature of pure class A amplifier. *v2.4.x and above+*

    ★ ViPER-DDC (Now Cuztomizable!) ★
    Enjoy near HIFI sound on your headphones. *Not all models supported*

    ★ Spectrum Extension ★
    Make your music sound lossless with enhanced high frequencies.

    ★ x86 Platform Support ★
    Viper4Android supports x86 (Atom/Core i3/i5/i7) platforms.

    ★ USB/Dock effect Support ★
    ViPER4Android supports USB/Dock audio output.

    ★ Speaker Optimization ★
    First effect for speakers. Try it yourself.

    ★ Channel Pan ★
    Controls left/right channel output. Its not very useful unless your headphone is imbalance or faulty one side. It will be a cure for you.

    ★ Differential Surround / Haas Effect ★
    This is an old feature which ViPER520 had removed from FX in early days.
    But after many users requesting it, ViPER520 bring it back to FX
    More info on Haas Effect: http://www.mixcoach.com/creating-depth-the-haas-effect-2/

    ★ ViPER Fidelity Control ★
    ★ ViPER Bass ★
    With different bass modes, you can have greater bass experience than before!
    ★ ViPER Clarity ★
    With the latest Clarity mode selection, you can balance up heavy bass with high clarity audio that you can never imagine before!

    ★ Headphone Surround+ (VHS+) ★
    With this VHS+, V4A made its way to achieve great surround technologies for Android.

    ★ Auditory System Protection (Cure Tech+) ★
    With normal audio system, listening for more than three hours will feel fatigue, dizzy, tinnitus, irritated and other symptoms.
    This is a normal reaction, heavy bass and high volume could cause permanent damage to the human auditory system, but other phenomena can restore through resting.
    Viper as a listening experience professional will not ignore this problem. Therefore put a lot of effort to study how to make a "Healing" sound technology, just a small success. But thinking on how to let users experience it.

    ★ Convolver ★
    When an Impulse Response Sample(IRS) is loaded, V4A will process the sound to show the same characteristics of the loaded sample. Through Convolution, samples with effects such as equalizer, surround, reverberation, tube etc can be loaded.
    Download and extract IRS files to <storage>/ViPER4Android/Kernel/<paste files here>

    ★ FX Compatible Mode (Only in 4.x) ★
    Compatible Mode supports large variety of music players and the players' own EQ/sound effects (system-provided/third party)
    Therefore, you don't have to select V4A in Sound Settings > Music Effects, choose anything other than V4A. Just run V4A app and the effects will be working with anything else.
    1. In option, switch to Compatible Mode. Reboot, done.
    2. In Sound Settings > Music Effects, choose other than V4A.
    3. Run V4A app and configure the settings then the effects will work together with the one you chose in Sound Settings.​

    ----------------------------------------------
    Last Update Log
    Note: FX v2.3.2.5 onwards:
    1. Fully support x86 platform, but not fully optimised yet. (Using VHS+/Convolver may increase battery usage)
    2. Fully support true octa-core devices.
    3. Correctly-installed Busybox is required before installing V4A.

    If you see V4A installation pop-up loop, its probably due to incomplete root OR htc_audio_effects.conf    ​

    FX version: v2.5.0.5 (New package name! Please uninstall any previous version)
    Android 7.0 Nougat users >>>> Try this fix apk: here.
    !! Detailed update info >>> Read Joe's post: here.
    0. Emergency fix v2504 - repair load file incompatibility issues.
    1. New UI.
    2.Add quad-ch convolver support (stereo convolver).
    3.Add FET compressor.
    4.Support change storage path.
    5.Fix bugs.
    ----------------------------------
    XHiFi version: Final v2.1.0.2-1 (discontinued)
    1.Support for Android 4.3 (v2102-1)
    2.No changes for Android 2.3 (2102)​

    Downloads
    Full download list at Official Website: http://vipersaudio.com/blog/?page_id=48
    Note: Please connect to the internet when installing V4A. So we can count our users.
    ViPER4Android FX
    v2.5.0.5 (Android 4.0~7.0): Mediafire *ZIP Contains v2505 standard & v2505 nougat IO fix apk*
    v2.4.0.1 (Android 4.0~6.0): Mediafire *Does't support below Android 4.0*
    v2.3.4.0 (Android 2.3~5.0): Mediafire

    ViPERsToolBox(For making custom DDC))
    v2.0: Mediafire
    v0.1: Dropbox (Joe)

    ViPER4Android XHiFi
    XHiFi version Final v2.1.0.2-1 (Android 2.3~4.3): Mediafire​

    IRS Impulse Response Sample
    Official Website: http://vipersaudio.com/blog/?page_id=91

    XDA:
    IRS Index: here
    Zhuhang's IRS XDA: here
    Joe0Bloggs Headset Correction Filter IRS: here​

    Donations
    V4A Project Donation account not available yet.
    Visit here: http://vipersaudio.com/blog/?page_id=180​

    Open Source at GitHub

    ------------------------------------------
    ViPER's Audio founded by ViPER520.
    Co-founded by ZhuHang.
    CN. vipersaudio.com / EN. facebook.com/vipersaudio
    Copyright (C) 2006-2017 vipercn.com / vipersaudio.com
    View
    1118
    zhuhang
    zhuhang
    Installation / Downloads

    Check this post for complete tips, instructions, notes and warnings.

    v2.2.x to v2.3.x Special Update Instructions
    Important: New v2.3.x V4A has new package name, therefore follow this installation steps carefully.
    1. Open old v2.2.x V4A, save the effect profile.
    2. Uninstall old v2.2.x V4A. Complete uninstall, including both driver and app. Reboot.
    3. Install new v2.3.x V4A, choose Yes to "Install/Update". (V4A auto detects and installs correct driver.)
    4. Reboot, open new v2.3.x V4A and load effect profile saved in step 1.​

    Setup your Device
    For Samsung devices,
    1. Try install V4A as user app instead of system app if the latter failed doesn't work.
    2. Use Normal Mode and select V4A FX in Settings>Sound>Music Effects.
    3. If don't work, use another player rather than Samsung stock Music.
    ------------
    1. ROOT your device.
    2. Install busybox if doesn’t come with root.
    3. Modify build.prop (Thanks Bradl79@xda)
    a. Open up /system/build.prop in text editor using any file explorer with root access.
    b. Change the line (If you can’t find these lines, skip this step.)
    Ipa.decode=true to lpa.decode=false
    tunnel.decode=true to tunnel.decode=false
    lpa.use-stagefright=true to lpa.use-stagefright=false​

    Installation
    1. Download, extract and copy ViPER4Android_FX/XHiFi.apk to your device.
    2. Install the apk as USER app or SYSTEM app is up to you. (v2.3.1.0 onwards)
    3. Run FX/XHiFi app from app drawer, allow root access if asked.
    4. When driver installation prompted, choose Yes.
    5. V4A auto detects your CPU and show available driver modes below :
    No modes: For processors with or without VFP .
    Battery Saving: Available for all processors with NEON.
    High Quality Mode: Available for processors with NEON.
    Super Audio Quality: Available for processors with NEON.    ​
    6. Choose your desired selection.
    7. After installation done, Reboot device.
    8. If you want to use only V4A as audio effect, follow normal mode. If you want existing audio effects to work, follow compatible mode.
    Normal Mode:
    9. In Sound settings > Music effects, always choose V4A FX unless FX is not installed.
    10. Open up V4A FX (and xhifi), in menu, FX Compatible Mode set to Normal Mode.
    11. If not working, try Compatible mode before trying Force-Enable.
    Compatible Mode:
    9. Do not change anything under Sound settings/
    10. Open up V4A FX (and xhifi), in menu, FX Compatible Mode set to Compatible Mode.
    11. If not working, use Normal mode and disable other effects.​
    12. How to use IRS in Convolver? See IRS page: here.    ​

    Future Updates
    Option 1: Use the “Check for update” function in V4A app itself.
    1. In V4A app, go to menu and select Check Update. It will redirect you to a page.
    2. Download latest apk from the page.
    3. Install apk and overwrite. (Replace in system/app/ if its SYSTEM app)
    4. Open up FX (and XHIFI), Choose “Yes”. Reboot, done.

    Option 2: Download from Website/XDA
    1. Download latest FX and XHIFI apks from Website’s Downloads section or XDA.
    2. Install apk and overwrite. (Replace in system/app/ if its SYSTEM app)
    3. Open up FX (and XHIFI), Choose “Yes”. Reboot, done.

    Uninstallation
    1. Open up V4A FX (and xhifi), go to menu and choose “Uninstall driver”.
    2. After that, uninstall V4A FX (and xhifi) app itself.
    3. Reboot. Done. Bye-bye V4A.

    -----------------------------
    ViPER's Audio founded by ViPER520.
    Co-founded by ZhuHang.
    CN. vipersaudio.com / EN. facebook.com/vipersaudio
    Copyright (C) 2006-2016 vipercn.com / vipersaudio.com
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    Troubleshoot / Bugs / F.A.Q

    Check previous post for complete tips, instructions, notes and warnings.

    Bug Report
    http://vipersaudio.com/blog/?page_id=120

    Troubleshooting (Updated 20/10/2013)
    Make sure your device is rooted and install latest SuperSU or SuperUser.
    Make sure you install correct apk for your android version.
    1. Complete Uninstall V4A (driver + app) and reboot.
    2. Install V4A as USER app, begin with battery saving mode.
    3. Use Normal mode, go to Sound settings>Music effects> and choose V4A(either fx or xhifi).
    >>>Test.
    4. If not working, switch to Compatible mode, go to sound settings>music effects> and select something else besides V4A.
    >>>Test again.
    5. If not working, return to Normal mode, change sound settings, enable Force-Enable.
    >>>Test again.
    6. If not working, repeat step 1 to step 5 but as SYSTEM app.
    >>>Test again.
    7. If nothing works. Disable or remove the default sound effect under MusicFX, then return to Normal Mode.
    >>>Last Test.
    8. If no help, submit a bug report.​

    F.A.Q
    Updated on October 22, 2013
    HOT: Why some settings are missing?
    A: Because you didn't read update log.

    HOT: Why cannot switch driver mode? (battery saving or high quality)
    A: Only CPU with NEON have choices. To change, uninstall and reinstall.

    HOT: Why no effect?
    A: See Troubleshoot.

    1. Which to install? FX or XHiFi or Both?
    A: The difference is explained in V4A main page. Install FX first. XHiFi is optional.

    2. Where is the build.prop lines in instructions?
    A: This step is optional. Those lines are not in every device. You can skip this.

    3. Can I still install V4A if I already using other sound mods?
    A: Yes, after installation, open V4A app and switch to Compatible Mode.

    4. Why installation fail?
    A: Root or SU binary issues. Use latest SuperSU.

    5. Why is superuser not supported?
    A: V4A does support superuser. Some superuser version have bugs, please use a stable version of it.

    See more:
    6. Why music lag after display off?
    A: This is due to CPU speed too low when screen if off. Make sure you are not using some battery saving CPU governor.
    Switch CPU governor to ondemand/interactive to increase CPU speed or increase minimum clock speed.

    7. Where is minimal phase equalizer?
    A: FIR Equalizer is the name of our EQ, minimal phase is a type of EQ. Its activated for High Quality Mode and Super Audio Quality drivers.

    8. Why does the effect keeps on skipping/cutting (on off on off spontaneously)?
    A: Submit bug report.

    9. Why no effect on Third-party players such as Poweramp and TTPOD?
    A: Disable their own sound effects.

    10. Why no effect in MIUI player?
    A: Try turn off MIUI default equalizer.

    11. Im using Meizu, Flyme system, why effect gone after i display lyrics?
    A: Flyme modified Android's Audio principle, so lyrics will be treated as music effect by the music player, so V4A cant be used.

    12. V4A FX/XHiFi effects suddenly disappeared?
    A: Android system kills certain processes due to memory limits. Install V4A app as system app (Put in /system/app/ and restart)

    13. Why there is background noise when using V4A effects?
    A: This is Android's MusicFX bug, this will happen on all other sound mods.
    Suggestion: Backup and Delete /system/lib/soundfx/libbundlewrapper.so

    14. Why bass reduced in v2.3.x?
    A: Due to sound improvement, audio effects are more precise than before. Therefore, re-adjust your settings.

    15. Why is volume reduced in v2.3.x?
    A: Volume controlled to reduce noise level. (THIS does not mean you can reduce noise by lowering volume xD)

    16. Why is there more CPU/Battery load in v2.3.x?
    A: Quality improved for NEON devices. For now you cannot change to battery saving priority.

    17. Why ViPER4Android FX/XHiFi always FC?
    A: Uninstall and Reinstall V4A. If not submit bug.

    18. Why ViPER4Android FX/XHiFi creates unexpected effects and different from other users?
    A: Use Normal Mode and disable other sound mods such as Noozxoide. If not, reinstall.

    19. ViPER4Android FX/XHiFi doesnt run after reboot?
    A: Check anti-virus or any startup manager whether V4A is disabled on startup.

    20. V4A FX/XHiFi effect gone after using data-killer?
    A: Please add ViPER4Android FX/XHiFi to data-killer whitelist or exception.

    21. V4A XHiFi effects gone after reaching certain volume? (~70%)
    A: This is due to Sony Xperia hearing protection library.
    Suggestion: Backup and Delete /system/lib/soundfx/libhearingprotection.so

    22. Why volume reduces after 10 seconds?
    A: This is not caused by V4A. Most probably you installed a bad and faulty xLOUD, ClearPhase or S-Force Front Surround port.

    23. In-call volume reduced?
    A: V4A will not affect call volume.

    24. What if my phone/tablet cannot detect headset plugin?
    A: Use lock effect mode and choose headset.

    25. V4A effects will spoil internal speaker/headset?
    A: Firstly, there's an audiophile limit in your phone, even if you max every single settings in V4A, u will never achive that limit.
    If the limit is achieved, your ears will blown off before the headset.
    If your earphone is not used to high volume/bass, with long period of high volume/bass will cause your headset to spoil (without V4A it will also spoil)
    For speaker, if a new phone straight away max the volume, within few days there will be distortion. Start off with 50~70% volume and after some time only max the volume.

    -----------------------------
    ViPER's Audio founded by ViPER520.
    Co-founded by ZhuHang.
    CN. vipersaudio.com / EN. facebook.com/vipersaudio
    Copyright (C) 2006-2016 vipercn.com / vipersaudio.com
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    FX & XHiFi Settings Explained & Default Settings

    V4A Profiles
    http://xdaforums.com/showpost.php?p=44577409&postcount=4642

    Popular Effect Simulation Profiles (Updated 1/10/2013)
    These setup will sound almost the same compare to original effect.
    ​
    ​
    1. Dolby System 2.0 (DS2.0) (FX v2.3.0.1)
    - AGC, slight, 4x, 0db
    - VHS+, level 3
    - field surround, strength level 7, mid level 5
    - viperclarity, xhifi mode, default​

    V4A Settings Explained
    http://vipersaudio.com/blog/?page_id=43

    -----------------------------
    ViPER's Audio founded by ViPER520.
    Co-founded by ZhuHang.
    CN. vipersaudio.com / EN. facebook.com/vipersaudio
    Copyright (C) 2006-2016 vipercn.com / vipersaudio.com
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    For ROM Makers

    V4A Rom Inclusion
    Website(Down): http://vipersaudio.com/blog/?page_id=127


    Things you need to do
    1. Proper credits to ViPER520.
    2. Add a link to ViPER’s Audio Website. (Its obvious because users need so many info here)
    3. Please remind users to use “Compatible Mode” if you inserted other sound mods.
    4. [OPTIONAL] Attach latest IRS Starter Pack as add-on/optional material for users to start with.


    Extra Tips
    1. Make it a system app.
    2. Copy assets/libv4a_fx/xhifi_xxx.so to /system/lib/soundfx/
    Note: xxx can be gb for 2.3.x, ics for 4.0~4.2 or jb for 4.3
    3. For android 2.3, done. For android 4.x, continue step 4.
    4. Make modification in audio_effect.conf
    (1). Under “libraries {“, add:
    Code: 
     v4a_fx {
          path /system/lib/soundfx/libv4a_fx_xxx.so
        }
#NECESSARY FOR XHIFI
        v4a_xhifi {
          path /system/lib/soundfx/libv4a_xhifi_xxx.so
        }

    (2). Under “effects {“ add:
    Code: 
            v4a_standard_fx {
          library v4a_fx
          uuid 41d3c987-e6cf-11e3-a88a-11aba5d5c51b
        }
#NECESSARY FOR XHIFI
        v4a_standard_xhifi {
          library v4a_xhifi
          uuid d92c3a90-3e26-11e2-a25f-0800200c9a66
        }

    Thanks for promoting ViPER4Android!
    -----------------------------
    ViPER's Audio founded by ViPER520.
    Co-founded by ZhuHang.
    CN. vipersaudio.com / EN. facebook.com/vipersaudio
    Copyright (C) 2006-2016 vipercn.com / vipersaudio.com
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