How to manipulate audio (ALSA) a lot with a HD audio card?
Stupid Intel decided to build-in DRM into the spec of these things. I have a Conexant which has Nvidia codec to provide audio for the HDMI output (this works fine except that in alsa settings I have to force a default output device, 3). What I'd like to do is be able to record from the stereo mixer, which I have none in alsamixer. So how do I go about creating one? I've tried a few different configs I found on-line but nothing seemed to work for me. WIth this capability of course I could record audio from my computer in say, Audacity, or I could even broadcast audio through Skype. And the best part would be if I could broadcast audio through Skype AND use my headset at the same time (mixing the 2 into one channel input). I have 3 mic inputs apparently (one of them is webcam, another is the jack, and I don't know what the 3rd one is). Image of KMix: http://bitpic.net/image/kmix-nvidia-hd-audio-codec So far I know it's something I can do with ALSA settings where I can tell ALSA to redirect audio and 'copy' whatever is going on on any input channel (overriding the jack of course). No luck there yet. Any help appreciated Thanks -- Tatsh www.bitpic.net www.tatsh.net ddrtist@gmail.com
I can't answer these questions, but have a question about one idea in here.
WIth this capability of course I could record audio from my computer in say, Audacity, or I could even broadcast audio through Skype.
I don't think broadcasting audio (would this be music??) through Skype would create the greatest audio, since Skype is so sensitive to packet loss & all. Each (small) packet has to be received at its destination in perfect order, and on-time. If one or more hops that your signal is taking is running slow (as it gets in Worcester in the evenings), then packets get lost and have to be resubmitted. Check your technical details next time you're in a skype convo, then do a traceroute on the IP of your skype contact --you can see this happening. If this is the case when you're sending recorded audio through it, you would be likely to suffer from chopped-up sound, which happens in skype a lot. So if you broadcast through skype and there's a lot of latency, or if your router is swamped because there's a lot of traffic inside of your network, then you would end up making square waves in the skype out of what probably started out as a perfectly nice audio signal. You could try to counteract that (I guess) by running some kind of QOS in your router, but even that itself slows the router down a little bit, as every packet has to be evaluated according to your QOS table. Just wondering. Liz J On 1 April 2010 10:14, Tatsh <ddrtist@gmail.com> wrote:
Stupid Intel decided to build-in DRM into the spec of these things. I have a Conexant which has Nvidia codec to provide audio for the HDMI output (this works fine except that in alsa settings I have to force a default output device, 3).
What I'd like to do is be able to record from the stereo mixer, which I have none in alsamixer. So how do I go about creating one? I've tried a few different configs I found on-line but nothing seemed to work for me.
WIth this capability of course I could record audio from my computer in say, Audacity, or I could even broadcast audio through Skype. And the best part would be if I could broadcast audio through Skype AND use my headset at the same time (mixing the 2 into one channel input). I have 3 mic inputs apparently (one of them is webcam, another is the jack, and I don't know what the 3rd one is).
Image of KMix: http://bitpic.net/image/kmix-nvidia-hd-audio-codec
So far I know it's something I can do with ALSA settings where I can tell ALSA to redirect audio and 'copy' whatever is going on on any input channel (overriding the jack of course). No luck there yet.
Any help appreciated Thanks -- Tatsh www.bitpic.net www.tatsh.net ddrtist@gmail.com _______________________________________________ Wlug mailing list Wlug@mail.wlug.org http://mail.wlug.org/mailman/listinfo/wlug
You might be looking for something like jackaudio or maybe pulseaudio. I know that Jack lets you connect things any way you want. Not sure about pulse. http://jackaudio.org/ The extra jack on your computer is probably a line in, for external sources, such as your stereo. You should be able to record input from that in Audacity without doing anything special. Recording digital input is another story, and I don't know that story. Greg Tatsh wrote:
Stupid Intel decided to build-in DRM into the spec of these things. I have a Conexant which has Nvidia codec to provide audio for the HDMI output (this works fine except that in alsa settings I have to force a default output device, 3).
What I'd like to do is be able to record from the stereo mixer, which I have none in alsamixer. So how do I go about creating one? I've tried a few different configs I found on-line but nothing seemed to work for me.
WIth this capability of course I could record audio from my computer in say, Audacity, or I could even broadcast audio through Skype. And the best part would be if I could broadcast audio through Skype AND use my headset at the same time (mixing the 2 into one channel input). I have 3 mic inputs apparently (one of them is webcam, another is the jack, and I don't know what the 3rd one is).
Image of KMix: http://bitpic.net/image/kmix-nvidia-hd-audio-codec
So far I know it's something I can do with ALSA settings where I can tell ALSA to redirect audio and 'copy' whatever is going on on any input channel (overriding the jack of course). No luck there yet.
Any help appreciated Thanks
participants (3)
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E Johnson -
Gregory Avedissian -
Tatsh