*** This bug is a duplicate of bug 331130 ***
https://bugs.launchpad.net/bugs/331130
Public bug reported:
The inbuilt stereo microphones at the bottom of the Eee 901's screen are
supposed to allow directional recording and noise cancellation. However,
some setting somewhere, perhaps in the sound driver, appears to be
inverted, such that the mic picks up sound very clearly on either side
of the Eee, and nothing at all from directly in front. The two internal
mics seem to be combined in such a way as to cancel sound from the
middle, which is the opposite behaviour to that expected (cancelling
surrounding sound, and picking up only the user's voice from the
centre).
E.g. if I sit and talk to the Eee facing it directly, my voice is not
captured (or rather, it is cancelled out by the stereo mic). As I move
left and right, to about 45 degrees either side of straight-ahead, my
voice becomes clear and is recorded perfectly well. Alternatively,
placing a finger or blue-tac over one of the microphones will also cause
the sound to be picked up correctly, as the noise cancellation cannot be
performed.
Using Ubuntu 8.10 with the Array kernel (http://www.array.org).
Expected results: sounds occurring directly in front of the Eee's
internal microphones should be captured, with surrounding sounds
cancelled through the noise cancellation feature of the dual
microphones.
Actual results: sounds occurring directly in front of the Eee are
cancelled, with surrounding sounds at 45+ degrees from centre picked up
instead.
This bug has also been reported (with confirmation from other users)
under https://bugs.launchpad.net/ubuntu/+source/linux/+bug/331130 but it
looks like it may be an issue specifically with the Array kernel, so I
am reporting it here also.
** Affects: ubuntu-eeepc-kernel
Importance: Undecided
Status: New
** This bug has been marked a duplicate of bug 331130
Eee PC internal microphone inverts noise cancellation
--
Eee PC internal microphone inverts noise cancellation
https://bugs.launchpad.net/bugs/341649
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