[Galaxy S Advance I9070 General] phyowaiummg:
Here is the audio effects that i ever feel the greatest.

It is

ViPER4Android [V4A]​

Here is official page http://xdaforums.com/showthread.php?t=2191223

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Version: FX version 2.2.1. 1/ XHiFi Merged

Operating environment: Android 2.3 / 4.0 / 4.1 / 4.2 / 4.3

★ Android 4.3 Support ★

ViPER4Android supports Android 2.3 Ginger bread, 4.0 Ice Cream Sandwich and 4.1 upto 4.3 Jelly bean firmwares.

★ NEW 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.

★ NEW 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-dep...haas-effect-2/

★ NEW ViPER Fidelity Control ★

★ ViPER Bass ★

With 2 bass mode, you can have greater bass experience than before! This requires a little bit better headphone.

★ ViPER Clarity ★

With the latest Clarity mode selection, you can balance up heavy bass with high clarity audio that you can never imagine before!

★ NEW Headphone Surround Engine+ ★

★ NEW 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.

★ NEW In-App Installation ★:

With this in-app installation, users just have to follow the instructions when first run V4A app and the app will install everything for you.

In order to use this feature successfully, full Busybox must be installed.

★ NEW 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.

★ NEW Safe Mode (Only in 4.x) ★:

If V4A dont work on many players, try switching to Safe Mode to work with almost any music player.

1. In option, switch to Safe Mode. Reboot, done.

Bugs/Issues:

1. Driver status in FX Compatible Mode always NO. Driver status will show YES in normal mode.

For IR Samples (Impulse Response)

1.Download it and extract to sdcard/Vi4PERAndroid/kernel (if folder does not there,jump to step 2 and then step 1)

2.Open Vi4PERAndroid,check box "impulse response"

3.Select desire samples

★★★For those having problems with effects in compatible mode even after rebooting. Try this:

1.Open up /system/build.prop (If you can't find this line, you have to solve in other way)

2.Change the line Ipa.decode=true to lpa.decode=false

CREDIT

ViPER520(creator) and zhuhang

FX & XHiFi Settings Explained & Recommended Value

V4A FX GUI Design (Not ready)

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