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Date:      Tue, 27 Jul 2010 18:04:23 +0200
From:      Hans Petter Selasky <hselasky@c2i.net>
To:        freebsd-multimedia@freebsd.org
Subject:   Audio phase inversion quirk?
Message-ID:  <201007271804.23993.hselasky@c2i.net>

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Hi,

I've discovered using my qecholo tool that many USB audio devices have 
switched the polarity of the audio signal. I guess not so many people are 
checking this, but I'm one of them :-)

There is currently a quirk for switching left and right channels. Is there a 
sound stack quirk in FreeBSD for correcting the phase? This is just a matter 
of negating the samples before passing along to the application.

--HPS



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