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Date:      Fri, 21 Sep 2001 16:26:45 +0200
From:      Bjarne Wichmann Petersen <mekanix@privat.dk>
To:        Rahul Siddharthan <Rahul.Siddharthan@lpt.ens.fr>, "Daniel O'Connor" <doconnor@gsoft.com.au>
Cc:        freebsd-multimedia@FreeBSD.ORG
Subject:   Re: Choosing a soundcard.
Message-ID:  <20010921142429.QPUH10378.fepC.post.tele.dk@there>
In-Reply-To: <20010921120208.C42208@lpt.ens.fr>
References:  <20010920153041.QSJQ2356.fepF.post.tele.dk@there> <XFMail.20010921121243.doconnor@gsoft.com.au> <20010921120208.C42208@lpt.ens.fr>

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On Friday 21 September 2001 12:02, Rahul Siddharthan wrote:

> Yes, I have the opposite problem:  my sound card accepts only 48000 Hz
> and the pcm driver's upsampling of 44100 Hz sound doesn't seem
> satisfactory.  

VLC have the option to choose the output (44k1 vs. 48k) but I couldn't hear 
any difference.

> It's not a scratchy electrical sound though, just a
> slight distortion more audible in some kinds of music than in others.
> On the other hand, if I try to record from the mic at a frequency
> lower than 48000 Hz, I do get a noise exactly like what you describe
> (a scratchy electrical sound).  Earlier on this list I was told the
> distortion may be an issue with the driver for my card (VIA VT82C686A)
> but quite definitely it's an issue with the upsampling, so maybe it
> affects other cards too.

Well I have this with both AOpen AX59Pro (VIA MVP3) and EPoX 8KTA+ (VIA 
KT133A) and with both SB and EPoX's on board soundchip. And moreover I get it 
not only with BSD but with Windows as well (eg. Deus Ex in the scenes with 
speach). So I'm not entirely convinced it's a driver-issue.

But if it were, is SB Live (EMU101) better supported with pcm than the 
cheaper SB PCI XX?

> I get around it by playing all my sound through KDE's aRts, which
> seems to do the upsampling correctly.  But there are other issues with
> using aRts on FreeBSD, and besides, not all non-KDE software supports
> it (xmms and ogg123 do, though).  I haven't tried mplayer.

You got aRts working with xmms??? Please mail me a binary!! I haven't been 
able to get it working here!

Bjarne

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