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Re: [Linphone-users] up sample from 8000hz to 48000hz possible ?


From: Simon Morlat
Subject: Re: [Linphone-users] up sample from 8000hz to 48000hz possible ?
Date: Wed, 19 Jul 2006 08:34:26 +0200
User-agent: KMail/1.9.3

Le jeudi 29 juin 2006 17:54, mcquaid mcquaid a écrit :
> Maybe it's my onboard sound, but my card has always had troubles with rate
> using dmix.  It doesn't seem to upsample them correctly.  I still use
> linphone but I've been searching for a gstreamer voip app, as for some
> reason gstreamer seems to be the only thing that upsample low rates
> (8000hz) correctly.
>
> So upsampling built into a voip app would be great, but I understand that
> it can seem like a wasted effort for a workaround for cards with buggy
> drivers.
>
> Any plans on writing a gstreamer backend?
No, contributions are welcomed.

Simon

>
> On 6/27/06, Simon Morlat <address@hidden> wrote:
> > You can just create a .asoundrc file that setups dmix+dsnoop as your
> > 'default'
> > alsa device, then you can select the default device using the "soundcard"
> > command of linphonec.
> >
> > Find attached my .asoundrc file.
> >
> > Le vendredi 16 juin 2006 18:36, gary ng a écrit:
> > > --- Simon Morlat <address@hidden> wrote:
> > > > Le mercredi 7 juin 2006 15:16, mcquaid mcquaid a
> > > >
> > > > �crit�:
> > > > > I am interested in this as well, as I have the
> > > >
> > > > same issue with rates.  I've
> > > >
> > > > > tried with dmix but it doesn't seem to upsample
> > > >
> > > > properly.
> > > >
> > > > > I was curious why you said 1.3.99.4 was necessary
> > > >
> > > > if it's an issue only
> > > >
> > > > > solved by alsa.
> > > >
> > > > I just meant that with current stable branch it's
> > > > difficult to use default
> > > > device since you need to add a line manually in the
> > > > config file...
> > > > With 1.3.99 you just need to click on the alsa
> > > > device you need.
> > > > I don't have problems with dmix with my intel8x0
> > > > chipset.
> > >
> > > How do I specify a "dmix" style device(rather than the
> > > "hw" one which is queried) in the linphonerc file ? I
> > > am running linphonec so there is no frontend to play.
> > >
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