Linux-audio-user October 2018

linux-audio-user@lists.linuxaudio.org

39 participants
40 discussions

Receiving multiple inputs over network uzing zita-n2j

by ahmethungari

Hi everyone, I'm trying to set a single laptop to receive two different inputs over network from two other computers. So, there are two sender computers and one receiver. I'm trying to use zita-njbridge. On sender computers I run sender1 $ zita-j2n --chan 1 192.168.1.5 5000 sender2 $ zita-j2n --chan 1 192.168.1.5 5001 And on receiver computer I try to run receiver $ zita-n2j --chan 1 192.168.1.5 5000 --buff 65 receiver $ zita-n2j --chan 1 192.168.1.5 5001 --buff 65 And the second zita-n2j comand gives an error "Address already in use" I thought having two different port numbers for different senders would allow me to run zita-n2j twice on the same computer, but apparently I was wrong. Is there any possibility to do so? I can also accept zita-njbridge alternatives as an answer. All I want to do is to receive two (or more) sources over network on a single computer and then mix them. -- Sent from: http://linux-audio.4202.n7.nabble.com/linux-audio-user-f5.html

6 years, 1 month

Re: [LAU] Jacks and sockets - Was: Berlin Linux Audio meeting @ c-base 2018-10-09

by Tim

On 10/07/2018 04:45 AM, Ralf Mardorf wrote: > On Sat, 2018-10-06 at 17:36 -0400, Tim wrote: >> On 10/06/2018 03:51 PM, Ralf Mardorf wrote: >>> https://www.roland.com/us/products/gkc-5_10/ >> >> Most folks become aware that even the best quality single-conductor >> (with shield ground) 1/4" guitar cables eventually break. It happens >> to all of them. Usually at the entry point to the plug, or in the >> plug itself. > > Hi, > > I confirm this and most likely anybody else does, too. > >> Now take that hard-learned experience with a single-conductor cable >> and apply it to *thirteen* conductors. Guess what happens... >> >> (Jacks for these DIN type plugs are usually never a problem if >> secured and soldered properly. Usually far less trouble than >> other types of jacks.) >> >> Often, the cause of the cable's break is the plug's strain relief >> being too tight - ironically the very thing that is supposed >> to help prevent breakage in the first place. >> >> I can't be too harsh on this product for the price/weight range. >> But yeah, buy TWO of them to be safe. > > Hi, > > the reason that I like to get more information about this Roland cable > is, that there are a lot of less expensive 13 pin DIN cables available > by the Internet and I do not only need a backup cable, I also want to > get a shorter cable than those sold by Roland. > > Some of the non-Roland cables seem to be without a locking mechanism, > but other provide a locking mechanism, e.g. the CD changer cables. I > wonder about the used cables. Are all cable cores of the original Roland > cable audio cables or are the cores a mix of different kind of cables? > Do other 13-pin DIN cables provide the same pin to pin connection as the > Roland cable? Since we know that some elChepo audio cables are ok for > 50 cm short cables, but 3 m long cables worsen sound quality, while more > expensive cables are still ok for cables way longer than 3 m, I wonder > what 13-pole cables are good and which are bad. When using the Roland > cable for the "normal" guitar pickups, too, the sound quality of the > audio signal from the "normal" pickups is good. Unfortunately there is > no printing on the Roland cables. If I want to build my own cables, what > cables and what jacks might be good? > > My favoured electronic part dealer provides only one 13-pin din jack > that fits, it's without locking mechanism and seemingly an elCheapo. The > dealer calls it "monitor plug" and yes, my Atari SM124 has got a 13-pin > din jack without locking mechanism, too. The dealer seems not to sell > any 13 cores cables at all. > > Ordering jacks and cable from perhaps different dealers + time exposure > might not be worth the effort, to build a non-Roland cable, but perhaps > ordering a CD changer cable could be a solution to replace an original > Roland cable. > > Regards, > Ralf Hm, I'm seeing wildly varying prices for the cables on ebay. The originals seem... a little over-priced. I can see why you'd be shopping around, I would too :-) Best advice I would say is read any user reviews accompanying them, since they seem to be from people who actually use them for this specific purpose. Usually I wouldn't worry about the locking mech, but in this case since one end goes into the guitar that would be important. Most of the ones I'm seeing appear to have the lock. Be sure to only look at ones that are for this Roland-compatible purpose. Other cables may be 13 pins but they may not be pin-compatible, and even if they are, the wires and shield may not be a good thickness, insulation, stiffness etc. Especially those CD changer cables, may not be the right thing. In those, some of the wires may be individually shielded which carry audio, and the other wires may be just control signals, so it's not really the right thing. Randomly selected, this one for example promises to be pretty good: https://www.ebay.com/itm/usa-seller-LOCKING-13-PIN-CABLE-SYNTH-ROLAND-GKC-3… I was going to talk about the GKC wires carrying raw, weak un-buffered signals from the pickup... but it turns out that's *not* true ! Looky here, I found a schematic of the GK2/3 at the top of this page: https://www.vguitarforums.com/smf/index.php?topic=73.0 And here is the VG-88 service manual: https://elektrotanya.com/roland_vg-88_sm.pdf/download.html According to those diagrams, the cable carries power, and *buffered* signals, and some up/down switches and volume control signals. Therefore, some of the wires (the six pickup signals) might be individually shielded and the others not, with a master shield ground surrounding the whole lot. Thus the cable core itself may be a special cable not easily found to buy. But I'm not sure, possibly a normal 13-conductor cable would actually be OK since the signals are buffered. If you find such a wire and decide to attempt to make your own cable, some advice I can offer is to have a can of technician 'freeze spray' handy. Or a can of compressed air 'duster' (Dust-Off etc.) turned upside down will also do. The reason is that when attempting to solder such tiny wires to such plug pins, you only have a few millimeters of exposed copper followed by a few millimeters of wire insulation before the wire disappears into the cable. The heat from the soldering iron can *easily* melt that insulation and before you know it you have a mess of melted insulation on your hands and you'll have to cut the cable and start over. So after each application of heat from the iron, be sure to immediately freeze the area to prevent the heat from traveling further down the wire melting the insulation. Also you'd better have nerves of steel and steady hands soldering thirteen tiny wires to thirteen tiny plug pins. It can be frustrating, I know. Probably not worth the effort, I would buy a cable. Tim.

6 years, 1 month

Jacks and sockets - Was: Berlin Linux Audio meeting @ c-base 2018-10-09

by Ralf Mardorf

On Sat, 6 Oct 2018 10:31:55 -0700 (PDT), Len Ovens wrote: >There are more robust ethernet rj45 solutions: >https://www.avshop.ca/wire-amp-cable-connectors-ethernet/neutrik-ne8fdp-rj4… >https://www.avshop.ca/wire-amp-cable-connectors-ethernet/neutrik-ne8mc-1-et… > >I don't know if the cycle count improves at all though. It does improve the steadiness of the jack to socket connection itself and provides a strain relief. IMO it's a good idea. I would like to continue talking about jacks. If somebody does know something about the jacks and cables used for https://www.roland.com/us/products/gkc-5_10/ , please reply off-list. However, off-list I was asked to stop my annoying off-topic writing regarding jacks. My apologies for disturbing the important "Berlin Linux Audio meeting" notes.

6 years, 1 month

[ANN] Submit your Open Source Music FM Synthesizer Challenge entry now!

by Christopher Arndt

Hi Synth Lovers, there are only less than *eight days* left in the Open Source Music FM Synthesizer Challenge to finish and submit your entry. The competition entry submission form is now finally online (sorry for the long delay), so please submit your entries here before Oct 14th, 2018 23:59:59 UTC: https://fmchallenge.osamc.de/submit/ I encourage you all to submit your tracks as soon as possible even if they are not finished yet. Each submitted entry is first in draft status, until you publish it. Only then* will the track be publicly visible and really enter the competition. If it stays in draft status until the deadline, it does *not* enter the competition, so there's no harm in submitting your track now, even if you are not sure whether you will finish it in time. But you won't miss the deadline, just because there are technical difficulties or your upload to Archive.org doesn't pass the checks. * I also need to approve it. I will basically just check the description and production notes for spam and conformance to the rules and usually approve it within minutes if everything is ok. P.S. The first one to break the web application gets to keep the pieces! ;) Seriously, if there are any problems with the submission form or the site, please contact me via <fmchallenge(a)osamc.de> immediately. P.P.S.S. There will be another announcement on Monday about an very desirable sponsored prize for the winner, so keep an eye out! I'm looking forward to hear what you came up with! -- Christopher Arndt Open Source Audio Meeting Cologne https://fmchallenge.osamc.de/ fmchallenge(a)osamc.de

6 years, 1 month

Berlin Linux Audio meeting @ c-base 2018-10-09

by Daniel Swärd

Hi all. Next meeting at c-base is on Tuesday 2018-10-09. I'll be in the mainhall from 20:00. At the last meeting we were jamming a bit in the soundlab and that was fun, so I've reserved the soundlab for us again. If we're going to go down to the soundlab, I'd suggest that we collect people in the mainhall between 20:00 and 20:30 before going downstairs. Cheers /Daniel

6 years, 1 month

[New music] In a room (collage/room installation)

by Jeanette C.

Hey hey, I've just completed my latest in Csound this time: https://www.dropbox.com/s/pdaazulav3dvjjd/in_a_room.wav For the moment it's only available in wav format. It is uncomplete in so far as there shall be an accompanying still image. This is binaural, so listen to it with headphones. If you haven't had the pleasure yet, keep as still as possible during the three minutes, otherwise your brain will destroy the little of the illusion that you might get. The facts: made in Csound, half physically modelled or synthesized and half based on sampled material. The creeks, the wooden poles and the bambo/wooden beads are physically modelled. The bamboo is a Csound muodule, the rest was based on my own simplistic ideas and some research. all other sounds are created from field recordings and here in my "studio". The room(s) itself is modelled using an HRTF (head-related transfer function) based system. If you don't know what HRTF is: imagine it like a virtual artificial head. The room model is your average shoebox type room, four walls with right angles, floor and ceiling. You can, however, set some paraeters for the walls, floor and ceiling. This includes absorption coefficient and a three band EQ. Enjoy and your feedback is always welcome. :) Best wishes, Jeanette -- * Website: http://juliencoder.de - for summer is a state of sound * SoundCloud: https://soundcloud.com/jeanette_c * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g * GitHub: https://github.com/jeanette-c * Twitter: https://twitter.com/jeanette_c_s You might think that I won't make it on my own, But now I'm Stronger <3 (Britney Spears)

6 years, 1 month

Re: [LAU] Experiences with miniDSP AVB products ?

by Chris Caudle

On Mon, October 1, 2018 7:18 am, nik(a)parkellipsen.de wrote: > while searching for a simple multichannel audio > interface for playback, i came across the N-DAC 8 by miniDSP. There is no standard AVB support in Linux currently, but the USB versions from miniDSP should work just fine (basic XMOS based class compliant behavior). -- Chris Caudle

6 years, 1 month

Default Jack metering (XFCE QJackCTL)

by Dale Powell

Hi all. This question is two parts I think really. Hopefully you can help but wondering if anybody uses anything to have a metering app always across their main output. I've been looking at zita-mu1 and which not perfect (I'll go into why later) it could be a contender for this use. But my session configurations change all the time. I use QJackCTL to start Jack and pretty much everything autoconnects to the main two Jack outputs as expected. How would I change it so that instead of connecting to the System outputs to the audio interface they connect to the input of the MU1? Or is there another way to get it in the permanent signal path between Jack's System outputs and the physical audio interface? What I find less than ideal about the MU1 is that it is a standard application with only a application window. Is the any Jack capable metering with a Widget for XFCE (either its own widget or works with Notification Area, not with the Indicator Plugin.) Something that will give little VU/PPM bars for left and right channels up on my toolbar and allow the main window to be closed. Hoping one of you has wanted to solve the same desire. Dale.

6 years, 1 month

[MUSIC] Synth Prelude n. 1

by Lorenzo Sutton

A prelude for synth. Although a relatively short piece this took way longer to finish than I had expected. Soundcloud: https://soundcloud.com/lorenzosu/synth-prelude-01 Archive.org: https://archive.org/details/synth_prelude_01 (includes direct download links) Made with Yoshimi and Rosegarden. As usual thanks to all the developers of these two music applications which I like so much for their work and dedication :) Hope you enjoy. Lorenzo.

6 years, 1 month

Experiences with miniDSP AVB products ?

by nik＠parkellipsen.de

6 years, 1 month

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Linux-audio-user October 2018