[FIX] [CM12] Callers hear echo when using headset jack in car input topic

Someone more educated on the matter, please chime in as this is definitely one of those trial and error winzip fixes. What I did was copy the *.acdb audio files from the stock moto g gpe /system/etc having to do with the audio profiles. I know nothing about these files, but copying them from the stock lollipop to cm12 gives no ill effect and improves the call echo. If someone has a better fix, please share!!

The list of the files in the zip:
General_cal.acdb
Global_cal.acdb
Handset_cal.acdb
Hdmi_cal.acdb
Headset_cal.acdb
Speaker_cal.acdb

Make a backup using adb pull

adb pull /system/etc/General_cal.acdb
adb pull /system/etc/Global_cal.acdb
adb pull /system/etc/Handset_cal.acdb
adb pull /system/etc/Hdmi_cal.acdb
adb pull /system/etc/Headset_cal.acdb
adb pull /system/etc/Speaker_cal.acdb

and then just flash.

https://drive.google.com/a/digitalon...ZBVmJkcTA/view

Attached Files

Audio Fix CM12 moto G xt1034.zip - [Click for QR Code] (327.3 KB)

[Q] Echo on VOIP topic

I have a Nexus 4. The main VOIP I use is Comcast's Voice 2GO, but I also have tried others. The common denominator is the caller on the other side always complains about echo of his own voice.. It doesn't seem to matter how I am using the N4, no speaker, speaker, bluetooth hand free headphone. No matter what I try they complain about echo. On my side it sounds

Any way to avoid the echo?