Date: Tue, 15 Jul 2003 13:40:40 -0400 From: Scott Lambert <lambert@lambertfam.org> To: freebsd-multimedia@freebsd.org Subject: Re: Problems recording sound in FreeBSD 5.1 Message-ID: <20030715174040.GA98698@laptop.lambertfam.org> In-Reply-To: <20030715005046.R74615@freeman.4gh.net> References: <3F131802.9040301@ludd.luth.se> <20030715005046.R74615@freeman.4gh.net>
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On Tue, Jul 15, 2003 at 01:36:52AM -0400, Stuart Barkley wrote: > On Mon, 14 Jul 2003 at 22:52 +0200, Joachim Strömbergson wrote: > > > Hardware wise, I've got an Asus A7V8X motherboard with built in AC97 > > sound. I'm running FreeBSD 5.1 and KDE3. > > > > Is there ar simple way to directly verify that the mic input works? > > Has anybody experienced similar problems? Anybody knows what might > > be the problem? I'm going to jump in and say "Me too!" > You should be able to bring up the microphone volume in the mixer and > hear it in your speakers or headphones: > > % mixer mic 100 > Setting the mixer mic to 100:100. > % I have done this. > For recording from the microphone, I normally select the recording > source with mixer and set the record level with the rec device: > > % mixer =rec mic mic 100 > Setting the mixer mic to 100:100. > Recording source: mic > % I have done this. > As a test you can copy from /dev/audio to a file and vice-versa for > playback: > > % cp /dev/audio test.au > ^C [after several seconds of recording] > % cp test.au /dev/audio > % I haven't done this but I have tried the recording app in Gnome. It didn't work. > Are you sure you are going into a microphone input and not a line-in > input? If you have a line-in input, are you able to record from that > input when feeding it a signal from a cd player or something similar? I'm positive in my case. > Are you sure you are going into an input and not an output? I've seen > some newer motherboards replace the line-in and microphone in jacks > with output jacks for 5.1 sound systems. Positive, I have two jacks, headphone and mic. > Two other things come to mind for AC97 recording: > > - AC97 specifies a control register bit which enables a 20dB > microphone input gain. For the microphones I use, I seem to always > need the boost. I apply the following patch (to 4.7, I'm not sure if > it applies to 5.1 at all). > Now this is interesting, I will have to try something like this but I'm using a Yamaha. 13:35:15 Tue Jul 15 $ cat /dev/sndstat FreeBSD Audio Driver (newpcm) Installed devices: pcm0: <Yamaha DS-1E (YMF754)> at memory 0xefdf0000 irq 11 (4p/2r/0v channels duplex default) 13:35:26 Tue Jul 15 $ mixer Mixer vol is currently set to 100:100 Mixer pcm is currently set to 99:99 Mixer line is currently set to 73:73 Mixer mic is currently set to 100:100 Mixer cd is currently set to 75:75 Mixer rec is currently set to 100:100 Recording source: mic I am trying an Andrea AN-50 headset. It came in a box of Wheaties labeled OS/2 Warp 4. It is the only mic I have. -- Scott Lambert KC5MLE Unix SysAdmin lambert@lambertfam.org
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