Wednesday, April 20, 2016

                You might be having costliest cellphones,  but problem with an android smartphones is its poor audio quality.  So developers are constantly working hard to improve the audio quality of an android phone.  One mod I had discussed in my earlier blog called Xtrememusic mod. You can also try this mod if you have a rooted phone. But there’s an one more audio app called Viper4android and is absolutely  free to install on any rooted Android device.  This app is far better than any other app on the playstore and is developed by Zhuhang.

                  Viper4Android is gaining it’s popularity and it has been downloaded by millions of android users. Now VIper4Android mod has been updated to work on Android 5.0 Lollipop. Viper's audio is excellent in terms of clarity with its unique ViPER Clarity and XHiFi technology. It also improves bass with its dynamic bass and Viper bass and XHiFi technology.

                 Besides, surround sound experience had never been better without ViPER’s Surround Settings including Field Surround, Differential Surround (Haas Effect) and Virtual Headphone Surround+.

Read also : Audio Mod to Improve Sound Quality of an Android Mobile

 Viper4Android Features
  •     Playback Gain Control
  •     Viper-DDC
  •     Spectrum Extension
  •     FireEqualizer
  •     Convolver
  •     Differential Surround
  •     Headphone Surround+
  •     Reverberation
  •     Dynamic System
  •     Tube Sound 
  •     Fidelity Control 
  •     Auditory System Protection
        Below are the main features you can go through
  • Playback Gain Control : A Plyback gain control makes the headphone sound quieter or louder, even when the phone volume is set to max.
  • Viper-DDC : Viper DDC will produce a balanced audio response from your headphones, which means the lows, mid and highs do not cross each other. 
  • Spectrum Extension : Encodes the higher sound spectrum differently than the lower part. A different approach on the replication of the higher spectrum, gives us a more detailed sound.
  • Convolver : Best features of Viper4Android, and also the most battery hungry. Enables to use a IRS (Input Response Sample) through convolution. Which basically is a sound processor, playing back in real time the characteristics of the sample.  To use it you will need IRS samples, which you can find here. Put them into SDcard/ViPER4Android/Kernel  to work.
  •  Differential Surround : It basically differentiates the sound between two ears i.e delays the sound from one ear to another ear.
  • Headphone Surround+ : Here you can select 5 different types of effect levels, where each level gives you the different surround experience.
  • Reverberation : Simulates sound being reflected from objects. With it we can replicate sound as if we were in a room, while we listen to music on our headphones.
  • Fidelity Control : Gives us control over Viper Bass and Viper Clarity. With them, you can add bass via different modes and frequencies and also make the sound clearer. It works really well on lower bit rates.
 Installation procedure.

Note : Please make back up of your device so that you can revert back.  If anything goes wrong I will not be held responsible.
1.   Your mobile need to be rooted for the app to work.
2. If not rooted root with latest or any other rooting method which works for your mobile.
3.   Change to permissive mode with SELinux Mode Changer.
4.   Enable developer options and uncheck Use Nuplayer.
5.   Flash the zip you downloaded from the thread or from the links above (you need a custom recovery).
6. Open Viper4Android and under settings switch FX Compatible mode to Compatible.
7.  If you use PowerAmp enable MusicFX under Settings> Audio> Advanced Tweaks and turn it ON in Tone/Volume. Also, switch OFF the Equ, Tone and Limit under Tone/Volume. 

If you don't want to flash the zip file using custom recovery you can download the app from play store and install by following below steps.
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.

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:
1.   In Sound settings > Music effects, always choose V4A FX unless FX is not installed. 
2.   Open up V4A FX (and xhifi), in menu, FX Compatible Mode set to Normal Mode.
3.   If not working, try Compatible mode before trying Force-Enable.
    Compatible Mode:
1.   Do not change anything under Sound settings/
2.  Open up V4A FX (and xhifi), in menu, FX Compatible Mode set to Compatible Mode.
3.   If not working, use Normal mode and disable other effects.
4.   How to use IRS in Convolver? See IRS page: here.

 Download Section :
1. ViPER4Android FX V2.4.0.1 (Android 4.0~6.0) : Mediafire 
    (Does't support below Android 4.0)
2. ViPER4Android FX V2.3.4.0 (Android 2.3~5.0) : Mediafire
3. ViPER4Android XHiFi version Final v2.1.0.2-1 (Android 2.3~4.3) : Mediafire
4.  IRS Impulse Response Sample : IRS Index

Download Effects And Config Viper4Android For Best Sound
If You don't have time To Config Viper4Android On Lollipop Download below Configured sound effects.
      Open Viper4android App
      Change The Ui Setting To Expert-: Click On 3 Dot Menu   
      Open Ui Setting Choice Expert
       Now Import Profile -: Click On 3 Dot Menu Cilck  
       Import      Profile Select Vp

Official Website :
ViPER's Audio Official Website:
ViPER's Audio Official Chinese Forum:
Detailed Description is on XDA developers page. Please go through if you encounter any problem. 
For other sound mods you can visit this thread if you have a rooted phone. Xtrememusic mod