[HOWTO] Finally! a REAL solution to disable noise reduction

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I searched a solution to disable NR in the beginning of the call. I had an echo problem in my phone, and the only way to fix it was to disable the NR.

The problem - each time you place or answer a call we need to go to menu and disable it.

All the codes that posted here didn't disable the NR. they only disabled the menu.

After digging for a few days in the smali of the Phone.apk I found the solution -

You need to edit CallNotifier.smali -

Search for - turnOnNoiseSuppression and rem the line

In my case it looks like this.

.line 957
    .local v3, noise_reduction:Z
    iget-object v8, p0, Lcom/android/phone/CallNotifier;->mApplication:Lcom/android/phone/PhoneApp;

    const/4 v9, 0x1

    # invoke-static {v8, v3, v9}, Lcom/android/phone/PhoneUtils;->turnOnNoiseSuppression(Landroid/content/Context;ZZ)V

And in PhoneApp$PhoneAppBroadcastReceiver.smali (not all APk's needs it)-

.line 1930
    sget-object v1, Lcom/android/phone/PhoneUtils$AMRState;->WB:Lcom/android/phone/PhoneUtils$AMRState;

    invoke-static {v1}, Lcom/android/phone/PhoneUtils;->setAMRCodec(Lcom/android/phone/PhoneUtils$AMRState;)V

    .line 1940
    :goto_9
    iget-object v1, p0, Lcom/android/phone/PhoneApp$PhoneAppBroadcastReceiver;->this$0:Lcom/android/phone/PhoneApp;

    invoke-virtual {v1}, Lcom/android/phone/PhoneApp;->getApplicationContext()Landroid/content/Context;

    move-result-object v1

    invoke-static {v1}, Lcom/android/phone/PhoneUtils;->isSupportedNoiseReductionInWBMode(Landroid/content/Context;)Z

    move-result v1

    if-nez v1, :cond_21

    if-ne v0, v5, :cond_21

    iget-object v0, p0, Lcom/android/phone/PhoneApp$PhoneAppBroadcastReceiver;->this$0:Lcom/android/phone/PhoneApp;

    invoke-virtual {v0}, Lcom/android/phone/PhoneApp;->getApplicationContext()Landroid/content/Context;

    move-result-object v0

    invoke-static {v0}, Lcom/android/phone/PhoneUtils;->isNoiseSuppressionOn(Landroid/content/Context;)Z

    move-result v0

    if-ne v0, v5, :cond_21

    .line 1943
    iget-object v0, p0, Lcom/android/phone/PhoneApp$PhoneAppBroadcastReceiver;->this$0:Lcom/android/phone/PhoneApp;

    invoke-virtual {v0}, Lcom/android/phone/PhoneApp;->getApplicationContext()Landroid/content/Context;

    move-result-object v0

    # invoke-static {v0, v4, v4}, Lcom/android/phone/PhoneUtils;->turnOnNoiseSuppression(Landroid/content/Context;ZZ)V

Different apk's versions may have different line number and variables numbers.

This change will make the phone starts calls with NR off. (may not work in the first call after the phone boots up - looking for a fix)
you can still turn it on if you want, during the call

Enjoy!

This is driving me insane.

I cannot, for the life of me, get a smali folder when I decompile Phone.apk. I've tried using APKManager 4.9, and directly using APKTool.

Using APKManager, I set my project, decompile with dependencies, drag twframework-res.apk when asked.

Using APKTool, I type:
apktool d Phone.apk

Both methods, all I get are a res folder, AndroidManifest.xml, and apktool.yml.

Is there something I am missing?

Originally Posted by ctomgee

This is driving me insane.

I cannot, for the life of me, get a smali folder when I decompile Phone.apk. I've tried using APKManager 4.9, and directly using APKTool.

Using APKManager, I set my project, decompile with dependencies, drag twframework-res.apk when asked.

Using APKTool, I type:
apktool d Phone.apk

Both methods, all I get are a res folder, AndroidManifest.xml, and apktool.yml.

Is there something I am missing?

Yeah, you're missing the fact that your ROM is probably odexed and not deodexed.

Originally Posted by petsasj

Yeah, you're missing the fact that your ROM is probably odexed and not deodexed.

Such a simple answer... *sigh*

You are correct. So how can I edit the .smali file of an odexed Phone.apk?

EDIT: Nevermind... I supposed I can just find a deodexed Phone.apk to make the change on, yeah?

Originally Posted by ctomgee

Such a simple answer... *sigh*

You are correct. So how can I edit the .smali file of an odexed Phone.apk?

EDIT: Nevermind... I supposed I can just find a deodexed Phone.apk to make the change on, yeah?

Finding a deodexed Phone.apk is probably easiest fo you. I don't think you're accustomed to smali/baksmali deodexing procedures? There's a nice How-To by sicopat, but still, get a deodexed Phone.apk

Originally Posted by petsasj

Finding a deodexed Phone.apk is probably easiest fo you. I don't think you're accustomed to smali/baksmali deodexing procedures? There's a nice How-To by sicopat, but still, get a deodexed Phone.apk

Just started learning about deodexing, yeah. I think I've found a deodexed Phone.apk for my ROM version, thanks for your help.

thanks but what about MIUI and CM7 roms?
i have echo problem in these roms!

cheers,

SX

Originally Posted by SignalX

thanks but what about MIUI and CM7 roms?
i have echo problem in these roms!

cheers,

SX

Have you looked to see if that same line is in the file?

Anyone can confirm it really works?

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Thank you for the solution but can anyone post deodexed phone.apk with this solution here (xxki4 or xwkj3)?

Originally Posted by yay1974

Thank you for the solution but can anyone post deodexed phone.apk with this solution here (xxki4 or xwkj3)?

I can confirm that it DOES work. I was able to edit a deodexed Phone.apk from XXKI3, and now it defaults NR to being OFF during calls. (though, as drorsi states in the OP, it is still on for the first call after the phone boots). You still have the option of turning it on during the call if you wish.

You can find what you need to know on how to decompile/recompile .apk files at http://forum.xda-developers.com/showthread.php?t=695701.