From: "Alexander E. Patrakov" <patrakov@gmail.com>
To: Harry van Haaren <harryhaaren@gmail.com>
Cc: "alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>
Subject: Re: [Intel HDA][ALC3226] Too much white noise from microphone
Date: Sat, 07 Feb 2015 19:36:05 +0500 [thread overview]
Message-ID: <54D622D5.4050501@gmail.com> (raw)
In-Reply-To: <CAKudYbPK9VH_qmX8Ov1ohPKzOPr=uEJCxTdmtEdA1mwQ_TEH7Q@mail.gmail.com>
07.02.2015 16:12, Harry van Haaren пишет:
> On Fri, Feb 6, 2015 at 11:48 AM, Alexander E. Patrakov
> <patrakov@gmail.com> wrote:
>> http://www.alsa-project.org/main/index.php/HDA_Analyzer
> Ah, i wasn't aware of this tool and I have a HDA in my laptop...
>
>> If this doesn't help, just click around randomly. Maybe you'll find the
>> magic checkbox that makes the noise go away and the voice stay :)
> No luck yet, played with the internal mic, which is very noise and SNR
> is much too high to be usable. Setting vref to 50 gives the best SNR,
> still not usable though.
>
> Changing the "digital" capture level in alsamixer changes the level of
> the internal mic signal - is this expected? I looked for the "digital"
> capture level control in HDAAnalyzer, but couldn't find it - vendor
> defined?
"digital" capture level is similar to the fake digital zoom found in
some cheap cameras and phones. It is a software-only feature, and does
not exist in any of the widgets. Please don't use it, i.e. set it to 0 dB.
--
Alexander E. Patrakov
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prev parent reply other threads:[~2015-02-07 14:36 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-04 21:13 [Intel HDA][ALC3226] Too much white noise from microphone Shawn Starr
2015-02-06 11:48 ` Alexander E. Patrakov
2015-02-06 15:22 ` Shawn Starr
2015-02-06 15:34 ` Alexander E. Patrakov
2015-02-07 11:12 ` Harry van Haaren
2015-02-07 14:36 ` Alexander E. Patrakov [this message]
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