From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lars Schotte Subject: Re: C-Media CMI8738-LX noise in recording from line in Date: Thu, 1 Apr 2010 13:00:55 +0200 Message-ID: <20100401130055.2a9d616e@romy.gusto> References: <20100401031825.557be2bc@romy.gusto> <4BB46CE6.1000103@ladisch.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from ms16-1.1blu.de (ms16-1.1blu.de [89.202.0.34]) by alsa0.perex.cz (Postfix) with ESMTP id D4150103880 for ; Thu, 1 Apr 2010 13:01:06 +0200 (CEST) Received: from [78.99.186.124] (helo=romy.gusto) by ms16-1.1blu.de with esmtpsa (TLS-1.0:DHE_RSA_AES_128_CBC_SHA1:16) (Exim 4.69) (envelope-from ) id 1NxI8z-00022m-Oz for alsa-devel@alsa-project.org; Thu, 01 Apr 2010 13:01:01 +0200 In-Reply-To: <4BB46CE6.1000103@ladisch.de> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@alsa-project.org Errors-To: alsa-devel-bounces@alsa-project.org To: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org OK. but the question is, does it put noise in recording in windows as well? I maybe solved it w/ activating the old hd audio integraded snd card, whichs broken, but line-in works and i tried it recording w/ it and that works perfectly. you say, that the cards never going to have a good sound quality. I am sure it doesnt, but what I am getting isnt even good enough. there is written on the box that I can record with it in 44khz and so on, cd quality and whatever, so is it a lie? i tried out manipulating w/ the mixer, believe me, however, i ll post some output later, but the settings can not be set better, because the only relevant setting here is the line-in and that is already on maximum. the second thing that i dont understand about this card is, that when I play sth at line-in, the sound is perfect, but the recording is crappy. so does it have a line-in to line-out passthrough? but then hows that possible that I can regulate it on my mixer and even mute line-in completely? On Thu, 01 Apr 2010 11:52:38 +0200 Clemens Ladisch wrote: > Lars Schotte wrote: > > The soundcard has following chipset - C-Media CMI8738-LX. > > This chip was designed before on-board sound devices were common, and > manages to have worse analog sound quality than many of those, > especially on its inputs. > > > So I try to record from the line in input, ... > > its too silent and there is a lot of noise in it. > > Even if your current mixer settings are suboptimal and can be improved > (please show the output of "amixer contents" or the alsa-info output), > be aware that this card never will have good quality. > > > Regards, > Clemens > _______________________________________________ > Alsa-devel mailing list > Alsa-devel@alsa-project.org > http://mailman.alsa-project.org/mailman/listinfo/alsa-devel -- ------------------- Lars Schotte @ romy