From mboxrd@z Thu Jan 1 00:00:00 1970 From: Takashi Iwai Subject: Re: Mono to stereo ? Date: Fri, 28 Mar 2003 17:43:57 +0100 Sender: alsa-devel-admin@lists.sourceforge.net Message-ID: References: <3E83BE0E.4070406@embedded.cl> <3E847670.8070006@rogers.com> Mime-Version: 1.0 (generated by SEMI 1.14.4 - "Hosorogi") Content-Type: text/plain; charset=US-ASCII Return-path: In-Reply-To: <3E847670.8070006@rogers.com> Errors-To: alsa-devel-admin@lists.sourceforge.net List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: To: Jeff Muizelaar Cc: Manuel Jander , alsa-devel@lists.sourceforge.net List-Id: alsa-devel@alsa-project.org At Fri, 28 Mar 2003 11:21:04 -0500, Jeff Muizelaar wrote: > > Takashi Iwai wrote: > > >At Thu, 27 Mar 2003 23:14:22 -0400, > >Manuel Jander wrote: > > > > > >>...but, if you are doing mono playback, your sound driver has to setup > >>your soundcard to playback on both channels the same mono channel. The > >>Vortex > >>driver (still not in the main branch) for example splits the mono signal > >>on its internal > >>mixer into 2 identical signals which are feed one into each CODEC channels. > >> > >> > > > >no, please don't do that. > >in the ALSA, instead of the lowlevel driver, alsa-lib (and > >oss-emulation module) will do this job. > > > In this case the card (not driver) is spliting the mono signal and > sending it to both right and left channels of the codec. Thus > channels_min should still be 1 because the card does actually support a > single channel hmm, which driver do you mean? from the above context, i read that the driver needs to split the signals by itself... Takashi ------------------------------------------------------- This SF.net email is sponsored by: The Definitive IT and Networking Event. Be There! NetWorld+Interop Las Vegas 2003 -- Register today! http://ads.sourceforge.net/cgi-bin/redirect.pl?keyn0001en