Date: Tue, 21 Feb 2006 11:32:49 +0300 From: "Yuriy Tsibizov" <Yuriy.Tsibizov@gfk.ru> To: "Mario Sergio Fujikawa Ferreira" <lioux@FreeBSD.org> Cc: freebsd-multimedia@FreeBSD.org Subject: RE: [Problem] Krec/rawrec, audigy incorrectly recording audio output Message-ID: <D6B2C454E5A77B4D8DA0B863D3D6D4920710C0@demon.hhp.local>
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> I am having trouble with my headset audio recording setting. > For some reason, I keep recording the headphone output whenever I > try to record with either krec (kde record application) or port > audio/rawrec; or, even skype. >=20 > You will notice below that all my input mixer levels are > 0. The only input that seems to affect the recording of the headphone > output is the rec input. However, that also affects the mic input > so it's not a possibility. 'rec input' is always 'sound mix' on Audigy and later cards, even if = mixer=20 says anything else (it does not query AC97 codec, but uses a cached = value). >=20 > EVEN, the audio output is recored even if I remove the > headphones plug from the soundboard. Therefore, this is indeed a > software issue. > # emuctrl list > Id Description Vol RecVol > FX (PCM) buses > fx0 DSP FX BUS 0 74:74 (75:75) This means "send all PCM data multiplied by .74 to playback and = multiplied=20 by .75 to recording". You record all sound you play (with lower volume). Your card has three mixers, and this seems to confuse you - one of them = is=20 AC97 mixer (you can change it with mixer(8)), the second one is EMU10K1=20 DSP-based (you can access it with emuctrl) and the third one is inside=20 24bit/192kHz "p16v" interface (hardwired in current driver). _Recording_ = output from AC97 is an input to DSP (usually in0). Playback output from AC97 is always muted. If you disable everything in (AC97) mixer, you still can get sound on=20 recording bus if you have non-zero RecVol in emuctrl (DSP mixer). You can visit http://chibis.persons.gfk.ru/audigy/#routing to look for=20 sound routing scheme (inside DSP). Yuriy.
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