Date: Wed, 27 Sep 2000 17:50:32 +0200 From: Andre Albsmeier <andre@akademie3000.de> To: Cameron Grant <gandalf@vilnya.demon.co.uk> Cc: FUJISHIMA Satsuki <k5@cheerful.com>, gwk@sgi.com, freebsd-multimedia@FreeBSD.ORG Subject: Re: SB16: recording 8 bit ok, 16 bit recording just gives noise Message-ID: <20000927175032.A10139@schlappy.mobile.tld> In-Reply-To: <008a01c0227d$5e175e20$0504020a@haveblue>; from gandalf@vilnya.demon.co.uk on Tue, Sep 19, 2000 at 10:05:36PM %2B0100 References: <39C54B37.A229A4F@sgi.com><39C62553.B79294A7@mitre.org> <86d7i0f992.wl@cheerful.com> <008a01c0227d$5e175e20$0504020a@haveblue>
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On Tue, 19-Sep-2000 at 22:05:36 +0100, Cameron Grant wrote: > > I suspect newpcm is broken for this card. > > it seems so; i will investigate soon. > > > At Mon, 18 Sep 2000 10:23:15 -0400, > > Andresen,Jason R. <jandrese@mitre.org> wrote: > > > These early ISA Soundblaster cards have a bug that prevents you from > > > playing and recording at 16 bits. If you are playing a sound, you are > > > limited to recording at 8 bits. (1 1/2 duplex card). > > > > So I believe this is not the case. > > the sb16 has an 8 bit channel and a 16 bit channel. both can be used for > play OR record, but only one in each direction at a time. the driver > allocates the 16 bit channel to the first operation, but it seems this is > not functioning right. Cameron, this was the reason I pestered you a while ago when I tried to record AFMT_S16_LE. You told me that this should automagically be converted into AFMT_U8 which is the only format I get as being supported when doing an SNDCTL_DSP_GETFMTS on an AWE64. You said you wanted to dig into the conversion code but, of course, it would be nice to have the true 16 Bit support on the AWE's. Next week I am returning from holidays and will do happily any tests you want me to do on my AWE's :-) Thanks for looking into this, -Andre To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-multimedia" in the body of the message
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