This problem has been just resolved in Sailfish OS. When looking for a
solution of a microphone problems with mako, I stumbled on this
bugreport and would like to contribute back. I hope that the same
solution would work for Ubuntu.
In Sailfish, the wrong microphone was loaded during the phonecalls. If
Ubuntu comes with the logcat, it can be checked as described in
http://forum.xda-developers.com/showpost.php?p=65898089=441 .
In short, we were getting the microphone without any noise cancelling.
The reason for selection of wrong microphone was in a bug in libhybris.
Namely, any property with long name in build.prop was not loaded
correctly due to the wrong checking of the property name length. It was
fixed by
https://github.com/libhybris/libhybris/pull/313
After this patch, the microphone is loaded correctly and sounds as it is
in Android. I am sure that this fix would work with all modems. I am
personally using the latest one.
Hopefully, that would resolve the bug in Ubuntu as well.
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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to pulseaudio in Ubuntu.
https://bugs.launchpad.net/bugs/1318360
Title:
Poor microphone quality (mako)
Status in pulseaudio package in Ubuntu:
Confirmed
Bug description:
After months of complaints from people talking to me on the phone
(mako ubuntu touch), I finally got around to use multiROM to dual boot
Ubuntu Touch and Android. Several people can confirm that there is a
noticable difference in terms of sound/microphone quality between
Android and UT in phone calls. With UT, my voice gets distorted to an
extent that person at the other end have real difficulties to hear
what I am saying, while with Android call quality is much better with
no distortion.
I have had a suspicion for a long time that this might be a software
and not a hardware issue. After trying Android and Ubuntu on the same
hardware I believe this suspicion is proved correct. This issue has
persisted in all the builds I have tried since at least the beginning
of the year, but probably longer. I am now at r17 of Utopic.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1318360/+subscriptions
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