Linux-audio-dev

linux-audio-dev@lists.linuxaudio.org

7501 discussions

by Carl Adams

Dear All I am promoting the development and manufacture of a new music keyboard capable of playing all traditional and some new musical scales. Descriptions of both can be found on my website at: http://52midnight.com The new design has been placed in the public domain, and I am seeking expressions of interest in persuading manufacturers to design and market the new keyboards. I believe that such instruments could initiate something of a musical renaissance and a range of new musical styles. It would also be of great value in training choirs to sing the pure, untempered intervals of traditional music rather than the tempered intervals of standard keyboards. I'm hoping for some assistance from the Linux Audio community in moving this forward, and would be very pleased to hear from anyone interested Carl Adams.

16 years, 4 months

Dumb Idea #27: LV2 host as kernel?

by Darren Landrum

If one were to build a "kernel" to a digital audio workstation that was itself a bare-bones LV2 host, could things like audio tracks, midi tracks, and mixer channels and the like be built as LV2 plug-ins? I've been thinking a lot about a comment made a while back about how monolithic applications are very ill-suited to the open-source method of development. So I got to thinking about how an operating system works (at a high level; my meager coding skills are no matches for people well-versed in operating systems) and began to ask some questions. This "kernel" would have to handle things like audio routing, and message passing between two "processes" (the LV2 plug-ins), and would jockey the audio in and out of the plug-in graph. It would need to support the GUI and event extensions, and probably a few others, at the very least. The hope might be that if such a kernel could be made, it might then be a lot easier for many people to contribute the small pieces that would make for a usable application. Please feel free to consider this mindless brainstorming if you'd like. -- Darren

16 years, 4 months

Tascam US-1641

by Jan Depner

Well, no response on the user list. Maybe someone here has an idea - does the Tascam US-1641 work with Linux/ALSA? I'm assuming not and have written a nice email to Tascam asking for a little information. I'm assuming they're not going to be very helpful but it's worth a shot. Jan -- Jan 'Evil Twin' Depner http://www.thecfband.com "Microsoft has a new version out, Windows XP, which according to everybody is the 'most reliable Windows ever.' To me, this is like saying that asparagus is 'the most articulate vegetable ever.'" Dave Barry

16 years, 4 months

Re: [LAD] TetraProc availability

by Fons Adriaensen

On Sat, Feb 21, 2009 at 10:31:49AM +0100, forum::für::umläute wrote: > is the TetraProc A2B converter available somewhere for download? > i couldn't find it at > http://www.kokkinizita.net/linuxaudio/downloads/index.html > > i would like to try it with a soundfield mic rather urgently... It's not on the downloads page because using it makes sense only if you have the calibration for you microphone - TetraProc requies around 40 paramters. This calibration data can be derived only from IR measurements. It is possible to use 'standard' values, given the FR and polar pattern of the mic, but results will not be very good. Which microphone would you want to use ? Would it be possible to measure it, if I tell you how to do it ? Ciao, -- FA Laboratorio di Acustica ed Elettroacustica Parma, Italia O tu, che porte, correndo si ? E guerra e morte !

16 years, 4 months

TetraProc availability

by IOhannes m zmoelnig

hi fons, list. is the TetraProc A2B converter available somewhere for download? i couldn't find it at http://www.kokkinizita.net/linuxaudio/downloads/index.html i would like to try it with a soundfield mic rather urgently... fgmasdr IOhannes

16 years, 4 months

A high performance frequency analyzer

by karim hamidou

Hi, I've been toying recently with the X window test extension (which allows the user to simulate input events) and I've decided to create a bigger project that uses it. My project idea would be a unix daemon that reads data from the sound card, gets the dominant frequency and then reports a key corresponding to this data. Unfortunately, I don't know the theory of spectrum analysis and I don't think I could come up with a high-performance spectrum analyzer in reasonable time. So, my question is : do you know a good spectrum analyzer, preferably written in C that I could modify ? Regards, Karim

16 years, 4 months

[JOB] Job opportunity - VoIP Quality Specialist

by Jussi Laako

Hi, This might be of interest for the people on this mailing list... We have an open position for VoIP Quality Specialist in our team at Nokia / MaemoSW in Helsinki, Finland. If this sounds interesting, please take a look at following link. As I seemingly cannot link to the actual job page in question, I can only link to the main page http://www.nokia.com/imaginemaemo , and ask to look up for Id: VoIP Quality Specialist-HEL000001K9 on the listing. At least currently seems to be on the first page. There might be also other interesting positions there... Best regards, - Jussi

16 years, 4 months

[ot] - NEED some security advise PLEASE!

by Julien Claassen

Hello all! I'm just a little worried abot my system security. I wonder is the following normal: # ps -ax [...] 8226 ? Ss 0:00 sshd: unknown [priv] 8227 ? S 0:00 sshd: unknown [net] Just before that I only saw "sshd [accept]" and "sshd [net]". Shutdown sshd and made new password and restarted sshd. Now it's the same. Can I easily check where it's coming from and what it's doing. I don't see anything besides those two lines. No other strange processes. Sorry to have bothered you with that. Kindest regards Julien -------- Music was my first love and it will be my last (John Miles) ======== FIND MY WEB-PROJECT AT: ======== http://ltsb.sourceforge.net the Linux TextBased Studio guide ======= AND MY PERSONAL PAGES AT: ======= http://www.juliencoder.de

16 years, 4 months

Re: [LAD] [LAU] [ANN] Das_Watchdog V0.9.0

by Kjetil S. Matheussen

On Sun, 15 Feb 2009, Ken Restivo wrote: > > > Very cool. > > This is totally random, but it reminds me, 10 years ago, when I used > to work on PC's back when laptops had floppy drives, and before Linux > supported a lot of hardware, I'd keep a DOS floppy handy for > troubleshooting purposes. It was called, of course, "DOS BOOT". > You probably meant to write ""DAS BOOT""...? :-) > http://en.wikipedia.org/wiki/Das_boot > > -ken >

16 years, 4 months

Re: [LAD] [ot] - NEED some security advise PLEASE! + new question

by Kjetil S. Matheussen

Fons Adriaensen: > >> ... And if it's a public server, >> I'd rather not have anybody logging in through ssh who is not capable >of >> dealing with key logins. I disabled password logins through ssh on >> my public machines. > >That seems to be the best way to deal with it. > >A weakly related OT question: > >I need to set up a machine as a router. One side is >a fixed public IP address, the other side is a local >net using 192.168.1.x. I want to give internet access >to the machines on the local net, so this requires >(AFAIK) NAT. Anyone has a pointer to a good tutorial >about how to do this ? I once put the lines belo into an init file to do this. I don't know what happens, I just copied from a post found on the internet, one like this. :-) In case there is a security problem with this method, someone will hopefully write a comment about it. I think eth0 is connected to the world, and eth1 is connected to the local network, but it could have been the other way too. /sbin/rmmod ipchains /sbin/modprobe iptable_nat /sbin/modprobe ip_conntrack_ftp /sbin/modprobe ip_nat_ftp /sbin/iptables -F -t filter /sbin/iptables -Z -t filter /sbin/iptables -X -t filter /sbin/iptables -F -t nat /sbin/iptables -Z -t nat /sbin/iptables -X -t nat /sbin/iptables -P INPUT ACCEPT /sbin/iptables -P FORWARD ACCEPT /sbin/iptables -P OUTPUT ACCEPT /sbin/iptables -A FORWARD -i eth0 -m state --state NEW,INVALID -j DROP /sbin/iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE # enable forwarding echo 1 > /proc/sys/net/ipv4/ip_forward # drop spoof packets echo 1 > /proc/sys/net/ipv4/conf/all/rp_filter

16 years, 4 months

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Linux-audio-dev