microphone
in [Debian]
|
Prev: Hola, Bienvenido.
Next: Motherboards
From: deloptes on 26 May 2010 20:10 Adam Hardy wrote: > > I'm trying to pick this stuff up but I find the amixer man page quite > obtuse, and I'm not finding an alsa-oriented website that's any better > either. so you don't thinks this page is informative enough? http://www.alsa-project.org/main/index.php/Main_Page http://alsa.opensrc.org/index.php/Main_Page http://en.wikipedia.org/wiki/Advanced_Linux_Sound_Architecture http://en.wikipedia.org/wiki/Open_Sound_System http://www.opensound.com/wiki/index.php/Tips_And_Tricks#ALSA_Emulation > > I can't figure out why you recommend changing 'input source 1'. What about > 0 and 2? And anyway, I can't figure out how to change them in alsamixer > (there seem to be no options for anything except mute), nor in amixer with > its sset and cset parameters. because you could then choose between inputs. I'm using kde3.5 and tested this with kde4.4 I have a file that sets up the cards with a fix id. This was very helpful cat /etc/modprobe.d/sound (lenny) or /etc/modprobe.d/sound.conf (testing/sid) ## ALSA portion alias char-major-116 snd alias snd-card-0 snd-hda-intel alias snd-card-1 snd-usb-audio options snd-hda-intel index=0 model=ref options snd-usb-audio index=1 (reload modules and relogin) > > And if that doesn't sound like I'm having a bad time, Java has just > decided it is getting upset with what I'm doing and can't use sound > anymore: > > Error: Sound line is not > available.javax.sound.sampled.LineUnavailableException: > line with format PCM_UNSIGNED 11025.0 Hz, 8 bit, mono, 1 bytes/frame, not > supported. may be you can ask yourself if 11025.0 Hz, 8 bit, mono, 1 bytes/frame is what you are targetting. IF you are developing a sound app you should know more about sound architecture and also read about java-pulseaudio. there should be interface (API) for it and I would use it. Still I think you have to take care what data you send to the audio output and prepare the audio system for it. > > It was happy enough until I started messing with the mic - I wondered why > my Java app had gone silent. Not that it was that noisy. what interface is java using - it could be they are using dsp device and you have an app running and blocking it - it's picky. read more about linux sound - there is a lot info. > > Sorry if this is getting boring but if there's a good source for > documentation on this stuff, just point me at it and I'll figure it out. I'm not using java - especially for sound (java makes your brain lazy). It's useful for internet and portable apps but it still has performance issues as sound needs speed in realtime. So basically what the java guys do they use gsm audio because it's low freq compressed audio data. I really don't want to know what you are doing but there is a lot of information in the net about how linux audio work (the links above) and it's not just linux, but again you should first start asking yourself the question which interface you are targetting - /dev/dsp* or /dev/snd/*. I guess java is using the oss audio interface. Understand how your system works. Get code samples - you are not the one inventing the wheel - and subscribe a list about java sound development. I admit alsa is not for beginners, that's why people made pulseaudio, but if you understand alsa you will love it. regards. -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/htkd3o$9v2$1(a)dough.gmane.org
From: Adam Hardy on 26 May 2010 21:10 deloptes on 27/05/10 01:07, wrote: > Adam Hardy wrote: >> I'm trying to pick this stuff up but I find the amixer man page quite >> obtuse, and I'm not finding an alsa-oriented website that's any better >> either. > > so you don't thinks this page is informative enough? > http://www.alsa-project.org/main/index.php/Main_Page > http://alsa.opensrc.org/index.php/Main_Page > http://en.wikipedia.org/wiki/Advanced_Linux_Sound_Architecture > http://en.wikipedia.org/wiki/Open_Sound_System > http://www.opensound.com/wiki/index.php/Tips_And_Tricks#ALSA_Emulation The first one on the list was one of the sites that I had in mind when I complained about them. It's a problem a lot of newbies in a subject area have, dealing with sites written by techies who are deeply immersed in the subject area. The same goes for the wikipedia sites. I need an Alsa for Dummies website. Sorry if I gave the impression that I was writing a Java app myself - I just called it 'my java app' because it's the only real java app on the machine and the machine's only purpose is to keep it running. I shouldn't have been messing around with mics and stuff. I do code java, but I've never tried to do sound. Regards Adam -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/4BFDC401.3020408(a)cyberspaceroad.com
From: deloptes on 27 May 2010 03:50
Adam Hardy wrote: > > The first one on the list was one of the sites that I had in mind when I > complained about them. It's a problem a lot of newbies in a subject area > have, dealing with sites written by techies who are deeply immersed in the > subject area. The same goes for the wikipedia sites. I need an Alsa for > Dummies website. you'll need time to understand it. just try to understand or look for additional information on the subject you don't understand. > > Sorry if I gave the impression that I was writing a Java app myself - I > just called it 'my java app' because it's the only real java app on the > machine and the machine's only purpose is to keep it running. I shouldn't > have been messing around with mics and stuff. I don't know what it's about but I would revert the settings and relogin or reboot > > I do code java, but I've never tried to do sound. it's obvious regards -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/htl7sm$ckc$1(a)dough.gmane.org |