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[Joe Liau <1318360@xxxxxxxxxxxxxxxxxx>]

Ubuntu 15.04 (r309)
Mako

Can confirm that this issue remains as described by wayne in comment 22.

In speaker phone mode during a call, the caller has trouble hearing me.
In regular phone call, the caller can hear TOO well. 

i.e. Mic amplification is too high in normal mode (causing distortion
when held close to mouth), and too low in speaker phone mode when held
far away from mouth.

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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.

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