From: Raymond Yau <superquad.vortex2@gmail.com>
To: "Ulrich Günther" <ulrich.guenther@gmx.at>,
alsa-devel@alsa-project.org, tiwai@suse.de,
alexander.blinne@uni-jena.de
Subject: Re: Decibel Levels for Storm Medusa 5.1 USB Headset
Date: Sat, 27 Jul 2013 07:30:13 +0800 [thread overview]
Message-ID: <CAN8cciY11fHgBhtR79BoY7R_1SLxpVQbYEzfM8Rm0s++QCfLdQ@mail.gmail.com> (raw)
In-Reply-To: <51F2954C.3010202@gmx.at>
> >>> I hope this Information helps. I have the Storm Medusa 5.1 USB Headset
> >>> which reports wrong decibel levels to pulseaudio. My Alsa-Info are
> >>> located at
> >>>
> >>>
> >
http://www.alsa-project.org/db/?f=a882f3db6769c5dfce83c266946eff52d1d55349
> >>> The Headset is card2 in the above dump.
> >>>
> >>> My decibel levels-fix
> >>>
> >>> [DecibelFix Speaker]
> >>> db-values = 1:-30 37:3
> >> How did you define these values?
> >
http://mailman.alsa-project.org/pipermail/alsa-devel/2007-November/003867.html
> >
> > If your headset have windows driver, need to find out which USB chip and
> > look at the datasheet of the chip
> >
> > e.g. cm106l ’s datasheet contain a table of dac volume cortol
> Ok looks like cm6206 is only in newer versions of the headset in older
> (like mine) there is cm106l , maybe there are other chips as well but i
> don't know.
http://mailman.alsa-project.org/pipermail/alsa-devel/2007-November/003877.html
Seem same USB audio id
idVendor 0x0d8c C-Media Electronics, Inc.
idProduct 0x0006
Do you find out the audio chip from product spec, user manual or windows
driver ?
Master volume control by default; per-channel volume control by C-Media
driver
Refer to the function block diagram , dac with volume controls 0 to -45dB
There is a table of dac volume control in linear scale
_______________________________________________
Alsa-devel mailing list
Alsa-devel@alsa-project.org
http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
prev parent reply other threads:[~2013-07-26 23:30 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-22 20:05 Decibel Levels for Storm Medusa 5.1 USB Headset Alexander Blinne
2013-07-25 8:40 ` Takashi Iwai
2013-07-25 22:01 ` Alexander Blinne
2013-07-26 12:45 ` Raymond Yau
[not found] ` <51F2954C.3010202@gmx.at>
2013-07-26 23:30 ` Raymond Yau [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=CAN8cciY11fHgBhtR79BoY7R_1SLxpVQbYEzfM8Rm0s++QCfLdQ@mail.gmail.com \
--to=superquad.vortex2@gmail.com \
--cc=alexander.blinne@uni-jena.de \
--cc=alsa-devel@alsa-project.org \
--cc=tiwai@suse.de \
--cc=ulrich.guenther@gmx.at \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).