[linux-audio-user] hum from laptop soundcard

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



I use the quattro with my laptop and its very quiet.

http://www.brianredfern.org

On Fri, 18 Apr 2003, alex dray wrote:

> i think you're out of luck...the point of laptop architecture is to squish 
> everything together....with a monitor and usb (which is fairly high voltage) 
> so close to an integrated audio card, you cannot avoid magnetic influence as 
> shielding at this level is practically impossible....you're best bet (and 
> not a very good solution) is to get a breakout box so the actual dac is 
> physically outside the laptop. If you come up with better solution please 
> let me know,its a problem that frequently drives me nuts
> 
> 
> 
> 
> >From: Ben Saylor <bsaylor@xxxxxxxxxxxxxx>
> >Reply-To: linux-audio-user@xxxxxxxxxxxxxxxxxx
> >To: linux-audio-user@xxxxxxxxxxxxxxxxxx
> >Subject: [linux-audio-user] hum from laptop soundcard
> >Date: Fri, 18 Apr 2003 13:57:06 +0200
> >MIME-Version: 1.0
> >Received: from roar.music.columbia.edu ([128.59.195.116]) by 
> >mc9-f14.bay6.hotmail.com with Microsoft SMTPSVC(5.0.2195.5600); Fri, 18 Apr 
> >2003 11:59:47 -0700
> >Received: from roar.music.columbia.edu (IDENT:mailman@localhost 
> >[127.0.0.1])by roar.music.columbia.edu (8.11.6/8.11.0) with ESMTP id 
> >h3IJ96Q28912;Fri, 18 Apr 2003 15:09:06 -0400
> >Received: from mail.Macalester.edu (imap.macalester.edu [141.140.1.16])by 
> >roar.music.columbia.edu (8.11.6/8.11.0) with ESMTP id h3IJ8nQ28895for 
> ><linux-audio-user@xxxxxxxxxxxxxxxxxx>; Fri, 18 Apr 2003 15:08:49 -0400
> >Received: from CONVERSION-DAEMON.mail.Macalester.edu by mail.Macalester.edu 
> >(PMDF V6.2 #30562) id <0HDJ00801Z4HTB@xxxxxxxxxxxxxxxxxxx> for 
> >linux-audio-user@xxxxxxxxxxxxxxxxxx; Fri, 18 Apr 2003 13:53:05 -0500 (CDT)
> >Received: from std16.dorms7.macalester.edu (std16.dorms7.macalester.edu 
> >[141.140.107.16]) by mail.Macalester.edu (PMDF V6.2 #30562) with ESMTP id 
> ><0HDJ007EEZ4HGW@xxxxxxxxxxxxxxxxxxx> for 
> >linux-audio-user@xxxxxxxxxxxxxxxxxx; Fri, 18 Apr 2003 13:53:05 -0500 (CDT)
> >X-Message-Info: UZmYcfFpTCewzfqvyl1d15R59mlxBfYY
> >Message-id: <200304181357.06318.bsaylor@xxxxxxxxxxxxxx>
> >User-Agent: KMail/1.5.1
> >Sender: linux-audio-user-admin@xxxxxxxxxxxxxxxxxx
> >Errors-To: linux-audio-user-admin@xxxxxxxxxxxxxxxxxx
> >X-BeenThere: linux-audio-user@xxxxxxxxxxxxxxxxxx
> >X-Mailman-Version: 2.0.13
> >Precedence: bulk
> >List-Help: 
> ><mailto:linux-audio-user-request@xxxxxxxxxxxxxxxxxx?subject=help>
> >List-Post: <mailto:linux-audio-user@xxxxxxxxxxxxxxxxxx>
> >List-Subscribe: 
> ><http://music.columbia.edu/mailman/listinfo/linux-audio-user>,<mailto:linux-audio-user-request@xxxxxxxxxxxxxxxxxx?subject=subscribe>
> >List-Id: A list for linux audio users <linux-audio-user.music.columbia.edu>
> >List-Unsubscribe: 
> ><http://music.columbia.edu/mailman/listinfo/linux-audio-user>,<mailto:linux-audio-user-request@xxxxxxxxxxxxxxxxxx?subject=unsubscribe>
> >List-Archive: <http://music.columbia.edu/pipermail/linux-audio-user/>
> >X-Original-Date: Fri, 18 Apr 2003 13:57:06 +0200
> >Return-Path: linux-audio-user-admin@xxxxxxxxxxxxxxxxxx
> >X-OriginalArrivalTime: 18 Apr 2003 18:59:47.0194 (UTC) 
> >FILETIME=[AE502DA0:01C305DC]
> >
> >Hi,
> >
> >I have a new Dell laptop with a headphone jack as the only external
> >audio output.  With headphones, the sound quality is good and there is
> >little noise to be heard.  However, if I plug in my monitors, the
> >output crackles and hums, regardless of the mixer levels.  There is
> >217 hz constant hum, a 125 hz hum when moving windows, and a 689 hz
> >whine when I run Pd.  The output crackles when I move the mouse
> >(external USB).  I just noticed that it goes away when I unplug the AC
> >adaptor.  I think I remember a similar problem coming up on this list
> >before, but I had no luck searching the archives.  How can I solve
> >this?
> >
> >Thanks,
> >Ben
> 
> 
> _________________________________________________________________
> MSN 8 with e-mail virus protection service: 2 months FREE*  
> http://join.msn.com/?page=features/virus
> 
> 



[Index of Archives]     [Linux Sound]     [ALSA Users]     [Pulse Audio]     [ALSA Devel]     [Sox Users]     [Linux Media]     [Kernel]     [Photo Sharing]     [Gimp]     [Yosemite News]     [Linux Media]

  Powered by Linux