Date: Thu, 04 Apr 2002 11:42:10 -0800 From: Lars Eggert <larse@ISI.EDU> To: The Anarcat <anarcat@anarcat.dyndns.org> Cc: John Utz <john@utzweb.net>, multimedia@FreeBSD.ORG Subject: Re: Soundblaster Live rear channels? Message-ID: <3CACAC92.3040506@isi.edu> References: <3CAC8E70.3040700@isi.edu> <Pine.LNX.4.44.0204041147440.2292-100000@jupiter.linuxengine.net> <20020404193214.GD279@lenny.anarcat.dyndns.org>
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[-- Attachment #1 --] The Anarcat wrote: > FreeBSD Audio Driver (newpcm) Mar 27 2002 12:56:06 > Installed devices: > pcm0: <Creative EMU10K1> at io 0x9000 irq 5 (4p/1r/0v channels duplex) > > So it has 4 play channels. newpcm supports multiple through the use of > multiple channels, AFAIK. On -stable, newpcm supports this through > hw.snd.pcm0.vchans. The default value is 0 which means there is only > one virtual channel available. If you bump this to 1 or 2, you have > more virtual channels available. These are accessible through > /dev/dspX.Y where Y is the virtual channel. I think I was unclear here when using "channel". What I'm trying to do is getting sound out of the two rear speakers with a 5-speaker setup. There's two separate cables that go from the soundcard to the speakers, one is for the front pair and subwoofer, the other drives the two rear speakers. No signal comes out of the latter. My understanding was that "virtual" channels act like virtual sound cards, i.e. each applications gets what looks like a separate sound device, and the kernel muxes the output. I'm not sure this has anything to do with the mixer channels, which is where I would expect the rear channel to show up. Lars -- Lars Eggert <larse@isi.edu> Information Sciences Institute http://www.isi.edu/larse/ University of Southern California [-- Attachment #2 --] 0 *H 01 0 + 0 *H 00 G0 *H 01 0 UZA10U Western Cape10U Cape Town10 U Thawte1 0U Certificate Services1(0&U Personal Freemail RSA 2000.8.300 010824164000Z 020824164000Z0T10 UEggert1 0 U*Lars10U Lars Eggert1 0 *H larse@isi.edu00 *H 0 |\Pw v~~ FDooӦA\- Cˀ4.)&{肋 ,z (ܷر߈T7_'txGH^tt/ҹB8%t<#ֲN V0T0*+e!0 00L2uMyffBNUbNJJcdZ2s0U 0 larse@isi.edu0 U 0 0 *H aJPMՒ ]cѭC+kS+wZ1gY",YT41 j 6:~℩ D~Kؚl=u(ՎM?cF7@}T00 G0 *H 01 0 UZA10U Western Cape10U Cape Town10 U Thawte1 0U Certificate Services1(0&U Personal Freemail RSA 2000.8.300 010824164000Z 020824164000Z0T10 UEggert1 0 U*Lars10U Lars Eggert1 0 *H larse@isi.edu00 *H 0 |\Pw v~~ FDooӦA\- Cˀ4.)&{肋 ,z (ܷر߈T7_'txGH^tt/ҹB8%t<#ֲN V0T0*+e!0 00L2uMyffBNUbNJJcdZ2s0U 0 larse@isi.edu0 U 0 0 *H aJPMՒ ]cѭC+kS+wZ1gY",YT41 j 6:~℩ D~Kؚl=u(ՎM?cF7@}T0)0 0 *H 01 0 UZA10U Western Cape10U Cape Town10U Thawte Consulting1(0&U Certification Services Division1$0"UThawte Personal Freemail CA1+0) *H personal-freemail@thawte.com0 000830000000Z 020829235959Z01 0 UZA10U Western Cape10U Cape Town10 U Thawte1 0U Certificate Services1(0&U Personal Freemail RSA 2000.8.3000 *H 0 32c %E>nx'gڈD)c5*mp<ܮto034qmOe KaU5u'rװ |CBPQ<9TIf - ki N0L0)U "0 0 10UPrivateLabel1-2970U 0 0 U 0 *H so&e4KYbDI j&*b ct mSK8P:l4撜n# KrgPo.X PW Ո9[9}4%MjÑ/<RbH10001 0 UZA10U Western Cape10U Cape Town10 U Thawte1 0U Certificate Services1(0&U Personal Freemail RSA 2000.8.30G0 + a0 *H 1 *H 0 *H 1 020404194210Z0# *H 1L<b!WTgp4{gO70R *H 1E0C0 *H 0*H 0 *H @0+0 *H (0 *H 101 0 UZA10U Western Cape10U Cape Town10 U Thawte1 0U Certificate Services1(0&U Personal Freemail RSA 2000.8.30G0 *H on lL0 Qb R 뀓s+G2eD ӵPp'3dc4aDeRӸTeAڅBd%}nf.G?KPԨm v$5 J+B`help
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