Linux-audio-user June 2004

linux-audio-user@lists.linuxaudio.org

140 participants
148 discussions

[linux-audio-user] Free Audiomedia II Board

by Jos Laake

Hey y'all, I've been cleaning house after a move and getting ruthless about recycling old technology accumulated in various boxes that I need to have a lot less of. And in an old parted-out Macintosh Quadra 650 I ran across an Audiomedia II board. I remember this board, and I'm pretty sure it's still fully functional. (The Mac is definitely not.) So I thought I'd toss it out here. I know it's pretty old, but if it's still usable, maybe somebody on this list could use such a thing? I'm just gonna throw it in the recycle bin if nobody wants it. I'll be happy to send it anywhere, if you pay shipping. I only have the board, no audio cables, but the outputs are all rca jacks. Write me off-list if you want it. If there's more than one taker, well, I'll just have myself a little drawing. ;-) Cheers, ~Jos~

20 years, 10 months

[linux-audio-user] Jackd startup as boot up script, error messages

by David Baron

This seemed to start up, but it hung. The command used was: /usr/bin/jackd -dalsa -dhw:0 -r44100 -p1024 -n2 -s -m -S -H Also, I get the following message on start: playback and capture sample rates do not match (44100 vs. 44099) cannot tie an input port cannot tie an input port The first one is kind of wierd--anyone have a 44099 system :-) ?? What does the sedond one mean?

20 years, 10 months

[linux-audio-user] producing a drum sample library for hydrogen

by R Parker

Hi, I have been discussing the design of a drum sample library for Hydrogen with Comix (Hydrogen author), Bill Bailey (my studio partner and a drummer) and Bobby Josland (drummer). I don't think any of us has experience with designing a high quality sample library. We've got some questions and hope to get feedback in the form of "this is my experience" and "I don't know but imagine...." The objective is to create a high quality sample library that has the potential to "sound" like a live drummer. Hydrogen has features that will help achieve sound and feel. From the perspective of the library I'm only concerned with "sound." Snare Drum For the sake of argument, assume there are three primary sounds; 1, 2 and 3 and that each sound has three volume levels; low, mid and high. This means there needs to be nine snare drum samples--the reality is that we'll have many, many more than that. The objective is to sequence a part that has the dynamics of a live player--snare roll or whatever. Are three volume/dynamic samples for every single sound enough for a sequence to achieve or get close enough to the dynamics of a live player? Does anyone know how the commercial drum libraries are produced? Maybe we need five volume/dynamic samples for every sound. Stereo Image I'm interested in knowing what people think is the best solution for achieving live sounding stereo imaging. I've spent several days recording test sounds and conlcuded that some instruments are probably best treated as stereo samples. Dry (no reverb) snare drums can potentially be mono tracks but I suspect cymbals must be stereo. The cymbal recording strategy will be to form a somewhat natural semicircle and possibly use an X/Y mic pattern. When sequencing ride cymbals they need to bleed from the listeners Hard left side across the stereo field and into the Hard right side. If we don't treat cymbals as stereo images they could fail to sound like a live player when sequenced. Snare drums might achieve live sounding stereo imaging from 1 in 2 out reverbs. In addition to dry mono snare drums, we intend to produce a number of reverb processed (wet) stereo samples. Anyway, I'd appreciate any thoughts on these issues. I don't expect production to begin for another two or three weeks and that will be somewhat dictated by the usability of Ardour. With the push for Ardour 1.0 I'm preoccupied with testing and not using it. Incidentally, the production will be done in our studio which has accoustically tuned rooms and with some high quality signal chains; Neumann -> Avalon, and some average chains. The overheads are SM81 which run about $600.00 U.S. a pair. They aint great but they are good enough. Those signal paths will run through a Soundtracs Solo consol and insert into a Tascam Dm-24. The drums will sound great because Bill, Bobby and I know what we're doing. If we don't know what we're doing someone should shoot us--we've got about 90 years of combined experienced with playing and recording drums. ron __________________________________ Do you Yahoo!? Friends. Fun. Try the all-new Yahoo! Messenger. http://messenger.yahoo.com/

20 years, 10 months

[linux-audio-user] [ANN] Specimen 0.3.0 released

by Pete Bessman

The latest release of Specimen, a midi controllable audio sampler for Linux, adds 4 LFOs which can modulate volume, panning, cutoff and resonance into mix. Additionally, the LFOs can be tempo synced to either midi or the jack-transport mechanism. Available for immediate leeching from www.gazuga.net, or you can download the tarball directly here: http://www.gazuga.net/specimen-0.3.0.tar.gz I'm working on a roadmap for Specimen, and I'm interested in hearing what features people are most interested in having. If there's something you want Specimen to do, let me know; the most popular features will get incorporated first. [pb]

20 years, 10 months

Re: [linux-audio-user] parameters needed for managing

by Michele Spinolo

Hi Fernando, first of all thenk you for your help! I'm quite new to linux world, so I did not know until now that Envy24control accepted parameters:-P. I just runned Envy24control with -c parameter and the system correctly recognize the three cards installed (IRQ3, IRQ5, IRQ7). Now my problem is I can't find in Envy24control the option to set cards 1 and 2 (or hw:1 and hw:2) as slave: concerning hardware settings I can find only a table which let me choose the clock (from 22050 to 96000, plus s/pdif option) and "locked" and "reset" option can be activated after choosing the sample rate. I can't fund any other option in Envy24control which seems to help to set other boards as slaves. I also noticed that running BruteFir is not possible if I set S/pdif in sample rate options, BruteFir comes out with a "broken pipe error" at its start and exits. Thank you very much for your help, sorry for bother you! Michele P.S. You are doing an incredible job at PlanetCCarma! My best wishes! > It is not completely clear to me if you have run envy24control on the > other two cards to set them to slave to wordclock. Envy24control can be > directed to use a particular card with the "-c x" parameter, where x is > 0 for the first card, 1 for the second and so on and so forth. > > -- Fernando

20 years, 10 months

Re: [linux-audio-user] parameters needed for managing

by Michele Spinolo

Hi Robert, I'm here again to bother you guys on this nice mailing list: I configured BruteFir that, as Robert supposed, can handle more than one soundcard. I can run BruteFir, but I have a problem: when I activate more than one soundcard by BruteFir I can hear some "POPS" coming out from my speaker. Everything is fine activating only one soundcard. The soundcards are properly installed and connected by internal wordclock cable: so two cards are slaved to the master one clock (this is done by HW settings, I cannot find any information about how to set one card as master and others as slaves, which is required, for example, under Windows). A CD player is connected to S/Pdif input of master soundcard, and this card is setted up by Envy24 Control utility to generate internally a 44100Hz clock, while others inputs are empty. I tried to set the card to get the clock signal form s/pdif, but BruteFir returns a "broken pipe error" with this setup. This setting can be made only on one card by Envy24 Control utility: I do not know if it is normal dueing to internal clockword connection between cards. I was wondering if "glueing" my three cards into one card as Robert suggested could solve the "POPS" problem. Unluckily I have no idea about how to do it, I'm quite new in Linux world and any help would be really appreciated! Thank you very much in advance to everyone who can help! Michele > > Hi guys, > > > > I installed Suse 9.1 with 3 Terratec EWS88D soundcars: Alsa properly > > recognize the 3 cards installed (3 Ice1712 divers are loaded), now I'm > > using BruteFir which require to set the Alsa's parameters for managing with > > multiple soundcards. > > Oh, sounds like a nice setup. > > > > > The parameter is: > > > > hw:0,0 > > > > if you have a 1 card system, now does someone know how this parameters work > > with 3 soundcards? > > > I think it is specified as: <devicetype>:<device>,<subdevice> > > So in your case the devicetype you wish to use is hw, the device is 0->2 and > subdevice depends entirely if the card HAS subdevices and if you wish to use > them, I think it probably best to leave it at 0. > > so: > hw:0,0 (first card) > hw:1,0 (second card) > hw:2,0 (third card) > > As I understand you brutefir supports natively to use several cards. If this > is not the case then it IS possible to glue the cards together so they form > one "card". This requires .asoundrc trickery that is beyond most peoples > abilities though ;) > > /Robert

20 years, 10 months

[linux-audio-user] maudio quattro...

by Timothy Alan Gorman

Anyone using this device with jack? and Ardour? Thanks -- Tim Gorman Information Systems Specialist Petr-All Petroleum Corp. office (315) 446-0125 x126 cell (315) 415-8108

20 years, 10 months

[linux-audio-user] deferred freedb.org lookup

by Atte André Jensen

Hi I normally use grip for ripping my CDs to mp3, which works well. But sometimes I'd like to be able to rip a CD without an internet connection, which leaves me without the freedb.org server which means I have to type all the track names myself. Is there a way to rip a CD to mp3 and later name the files from a freedb.org lookup? -- peace, love & harmony Atte http://www.atte.dk

20 years, 10 months

[linux-audio-user] Disks

by Juhana Sadeharju

>From: Malcolm Baldridge <linux-audio(a)paypc.com> >Subject: Re: [linux-audio-user] Ardour, Jack, and 2.6 kernels + XRuns > with the Audiophile 24/96 M-Audio > >1) You can't use more than one drive per IDE channel. [ ... ] >It's VERY bad on performance to mix very slow devices (such as CD-ROMs) >with fast ones: they hold a lock on the bus during all operations, I recently removed CD-ROM device completely. I ended up doing that because I got disk errors. The disks are perfectly ok, however. Some example symptoms were: -When the CD-ROM device slided in the disk, Alsa audio play was interrupted for 7 seconds -File copy sometimes made errors -- such as the highest bit of one byte of 300 MB file turned from 0 to 1 -File was temporarily corrupted -- error stayed at the same place, no matter how many times the file was verified; after the boot, the file was again ok; I made sure the caches were emptied, and so, it looks like a certain bit pattern or certain address caused the change in data I'm still testing and waiting for errors to happen. This problem has driven me to verify that files are copied ok, that the created tar.bz2 packages are ok (both the tar.bz2 file and its content). I also have set Emacs to make the numbered backup copies and make them by moving (not by copying). Backups, flac, mp3 and ogg codings need to be verified too. The point is this: how you would know about the rare bit changes if you never verify the files? In audio work such a bit changes can go unnoticed. How many of you verify, e.g., that a simple edit to a file did not made a bit error? I'm sure that no one verifies. Use of a dither makes the detection quite hard. >3) Good/correct IDE drivers for the chipset. With Linux at least, you have >pretty good control over this: just make sure you build your kernel with the >IDE chipset driver compiled into the kernel statically [it needs to activate >prior to the mounting of /]. How to know what drivers there already are? How to know if the driver in use is not the correct one? Can the default IDE drivers work for a IDE controller with possible limitations? That is, the problem with IDE driver could go unnoticed without an expert help. How to drop the speed of the IDE? Reliability vs. speed. >If not, you can set them up with: > >hdparm -c1 -u1 -d1 -m16 /dev/hda I made the change, but the speed stayed the same: % hdparm -t /dev/hda: Timing buffered disk reads: 64 MB in 2.23 seconds = 28.70 MB/sec Regards, Juhana

20 years, 10 months

[linux-audio-user] Ogg stream through authenticating firewall

by Pete Harlow

To play an Ogg Vorbis stream through a firewall requiring authentication try : wget --proxy-user="myusername" --proxy-passwd=mypassword --ignore-length -O - http://ogg.smgradio.com/vc32.ogg | ogg123 -d arts - Replace "-d arts" with the appropriate system on your box - see man ogg123 Replace "http://ogg.smgradio.com/vc32.ogg" (Virgin Classic) with your favourite. Enjoy! Pete. This e-mail and any attachment may contain confidential and privileged material intended for the addressee only. If you are not the addressee, you are notified that no part of the e-mail or any attachment may be disclosed, copied or distributed, and that any other action related to this e-mail or attachment is strictly prohibited, and may be unlawful. If you have received this e-mail by error, please notify the sender immediately by return e-mail, and delete this message. Thales, its subsidiaries and/or its employees shall not be liable for the incorrect or incomplete transmission of this e-mail or any attachments, nor responsible for any delay in receipt.

20 years, 10 months

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Linux-audio-user June 2004