From: bugtrack@alsa-project.org
To: alsa-devel@alsa-project.org
Subject: [ALSA - driver 0000183]: Mic boost boosts mic playback and not recording
Date: Thu, 7 Apr 2005 00:12:17 +0200 [thread overview]
Message-ID: <e8eecc12785f110ece412a641440f2d4@bugtrack.alsa-project.org> (raw)
The following issue has been ACKNOWLEDGED.
======================================================================
<https://bugtrack.alsa-project.org/alsa-bug/view.php?id=183>
======================================================================
Reported By: Schugy
Assigned To:
======================================================================
Project: ALSA - driver
Issue ID: 183
Category: PCI - cmipci
Reproducibility: always
Severity: minor
Priority: normal
Status: acknowledged
Distribution: SuSE 8.2
Kernel Version: 2.4.25
======================================================================
Date Submitted: 04-04-2004 13:51 CEST
Last Modified: 04-07-2005 00:12 CEST
======================================================================
Summary: Mic boost boosts mic playback and not recording
Description:
I've tried to record my voice with broadcast2000. The recording level is at
-30db (maybe 2db louder than without mic boost) while mic playback seems
to be boosted up by 500% to an audiable level.
======================================================================
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mlejeune - 04-27-04 17:33
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Same thing here. Mic boost switch works only on monitoring, not recording
level, so mic input is unusable with standard mics.
Alsa 1.0.4 (from sources) on vanilla 2.6.5 linux kernel.
CMI8738-MC6 chipset with cmipci driver.
----------------------------------------------------------------------
tiwai - 04-30-04 11:43
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well, unfortunately i can't find any relevant other register
bits for the mic boost...
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Schugy - 05-23-04 19:45
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Mic boost for recording isn't a hardware feature? Well, then we need a
dirty workaround anywhere in the alsa/oss-library or something similar
(feature request) to boost the volume of recorded sounds afterwards.
At the moment this card is unusable for mics.
Don't know whether it's useful to ask c-media for some information.
----------------------------------------------------------------------
tiwai - 05-24-04 14:50
----------------------------------------------------------------------
i have no idea unless the datasheet provides no information about it...
yes, please ask c-media. i've got no response from them, but more
inquires may hit more frequently :)
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thorstenhirsch - 07-24-04 19:47
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Same thing here with a 0000:00:0c.0 Multimedia audio controller: C-Media
Electronics Inc CM8738 (rev 10) and kernel 2.6.7 (gentoo-dev-sources). The
mic boost is absolutely neccessary for netmeeting/teamspeak/skype.
I'm going to write a mail to C-Media and hope that they'll answer.
Issue History
Date Modified Username Field Change
======================================================================
04-04-04 13:51 Schugy New Issue
04-04-04 13:51 Schugy Distribution => SuSE 8.2
04-04-04 13:51 Schugy Kernel Version => 2.4.25
04-27-04 17:33 mlejeune Note Added: 0000962
04-27-04 17:35 mlejeune Issue Monitored: mlejeune
04-30-04 11:43 tiwai Note Added: 0000982
05-23-04 19:45 Schugy Note Added: 0001180
05-24-04 14:50 tiwai Note Added: 0001183
07-24-04 19:47 thorstenhirsch Note Added: 0001471
04-07-05 00:12 jdthood Status new => acknowledged
04-07-05 00:12 jdthood Resolution open => not fixable
======================================================================
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next reply other threads:[~2005-04-06 22:12 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-06 22:12 bugtrack [this message]
-- strict thread matches above, loose matches on Subject: below --
2005-04-07 4:25 [ALSA - driver 0000183]: Mic boost boosts mic playback and not recording bugtrack
2005-06-27 13:57 bugtrack
2005-06-27 13:57 bugtrack
2005-09-15 22:01 bugtrack
2006-07-28 8:54 bugtrack
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