Linux-audio-user February 2011

linux-audio-user@lists.linuxaudio.org

157 participants
129 discussions

by allcoms

Any day soon now drobilla will get his persist extension finished and shortly after that we can likely expect a fully functional calf soundfont player, one that saves/restores its settings but until that day the best we have in the land of LV2 sample players would seem to be composite, which I seem to have working quite nicely under A3 although I've not played with t much yet. I've found this script: http://code.google.com/p/hydro2sf2/ but I'm wondering if there is a tool that will simplify the conversion going the other way ie to convert an .sf2 into a .h2kit fit for use with composite (and hydrogen, of course)?

13 years, 9 months

Re: [LAU] vlc jack - was paulstretch

by Jaromír Mikeš

2011/2/22 Daniel Worth <pipemanmusic(a)gmail.com>: > >> I know this option, VLC is connecting automatically here. >> My problem is that if I stop playback VLC get disconnected ( it is not >> happened if you press "pause" just on "stop"). >> Reconnecting on playback makes audible click. >> I would like to have VLC all the time connected to jack. >> Is this possible? > > Boy have I just found the article for you guys. ;) > > http://www.rncbc.org/drupal/node/76 > > Ask and all shall be revealed. My question was about VLC, but anyway thank you ;) mira

13 years, 9 months

vlc jack - was paulstretch

by Jaromír Mikeš

2011/2/22 Daniel Worth <pipemanmusic(a)gmail.com>: > >> BTW VLC jack plugin behave same, I am using VLC player via jack for >> live performances >> quite a lot and there is always audible click when I start playback >> and VLC connect to jack. >> Pretty annoying. :( > > This is fixable so that VLC auto connects to the playback ports or matches a > string for port names. It's in tools>>preferances>>audio enable advanced > view enable jack and there is a text dialogue you can enter the match > string. I know this option, VLC is connecting automatically here. My problem is that if I stop playback VLC get disconnected ( it is not happened if you press "pause" just on "stop"). Reconnecting on playback makes audible click. I would like to have VLC all the time connected to jack. Is this possible? regards mira

13 years, 9 months

Placing audio source in virtual room, with surround audio system.

by Mike Cookson

Someone asked at forum about THX Setup Console - creative utility to setup surround audio system. I'm sure, that in this case special features of x-fi processor Emu20k1 (or what is ever) are used. I even don't try to search a way to setup it in linux. Instead i hope to get it with jack software. In my test i have room, where is already project loaded (just to reuse and avoid adding of optional stuff). My current way is to route source at one time to zita-rev1, which supports Ambisonic B, and to host with some AMB plugins to pan source and get result also in Amb-B format. Both ambisonic outputs are mixed in Ambisonic Decoder for B format (also as plugin). I don't know, wether my choise fot this decoder is correct; sound from room is generated by zynaddsubfx, so errors in panning probably, can't appear there. But when i tried to convert mono sound (W channel from zita-rev1, which is main, monophonic, as far as i understood from wikipedia), two parameters did not noticable by my ear, and another - panned from center to right instead of from left to right. Also i tried "AMB order 1.1 mono pan", which did not make nothing noticable for my ear at all, and "AMB order 1.1 stereo pan" (with room stereo output), with which i could only increase / decrease difference between L and R channels, for my sence (i.e., stereo width). Before this all i tried ambdec, but i still could not get something useful with it.

13 years, 9 months

Fwd: paulstretch - was Linux programs for creatiing/manipulating sound effects

by Daniel Worth

---------- Forwarded message ---------- From: Daniel Worth <pipemanmusic(a)gmail.com> Date: Tue, Feb 22, 2011 at 7:29 AM Subject: Re: [LAU] paulstretch - was Linux programs for creatiing/manipulating sound effects To: Jaromír Mikeš <mira.mikes(a)gmail.com> BTW VLC jack plugin behave same, I am using VLC player via jack for > live performances > quite a lot and there is always audible click when I start playback > and VLC connect to jack. > Pretty annoying. :( > This is fixable so that VLC auto connects to the playback ports or matches a string for port names. It's in tools>>preferances>>audio enable advanced view enable jack and there is a text dialogue you can enter the match string.

13 years, 9 months

Strange reply from yoshimi-user mailing list.

by Mike Cookson

I subscribed to this list as well - i.e., confirmed, than got welcome message. Unfortunally, i removed it... may be i had very important info, but i don't have idea, what i should do besides to just write to mailing list, after confirmation. And i got strange reply from yoshimi-user-bounces(a)lists.sourceforge.net - i never got it before. > The results of your email command are provided below. Attached is your > original message. > > > - Unprocessed: > This feature should be very useful when you need to perform something not provided by yoshimi system effects set for each instrument. E.g., very > signal from PADSynth, with harmony, taking half or about full range (2500 cents == two octaves), could be filtered by multiband filter,... sliced, remixed, etc > > - Done. My message was is attachement to this reply.

13 years, 9 months

Linux programs for creatiing/manipulating sound effects

by Bearcat M. Şandor

Folks, I've been thinking about playing with sound effects. For a lot of my life, i've been interested in the sounds that various things make and i am wondering if there is a linux program that would allow me to take a sound clip and manipulate it. Like taking the sound of a chair squeak and distort it, stretch it, apply filters to it, alter the tone etc. Is there a linux gui app for this sort of thing? Preferably in with the gtk tool kit as i have that all loaded up? I did some digging around, but i didn't see much. Of course there's always the chance that i looked at something that would do it well and didn't recognise it. What is that kind of program called? Thanks, Bearcat

13 years, 9 months

Re: [LAU] sf2 to h2kit?

by Mike Cookson

Tue, 22 Feb 2011 08:41:08 +0000 письмо от allcoms <allcoms(a)gmail.com>: > On Tue, Feb 22, 2011 at 8:30 AM, Mike Cookson <cook60020tmp(a)mail.ru> > wrote: > >> It's an SFZ editor, but it can convert SF2 files to SFZ format, > and in > >> doing so, it dumps out all of the individual samples as WAVs. > > No need for wine. Swami can extract samples as well. Just select all > samples and use context menu. > > I already said as much Mike, problem is it only does one at a time > which is tedious if you have multiple sf2s you want to convert. > > > _______________________________________________ > > Linux-audio-user mailing list > > Linux-audio-user(a)lists.linuxaudio.org > > http://lists.linuxaudio.org/listinfo/linux-audio-user > > Oh, sorry. I did not read all thread.

13 years, 9 months

Music Made with Linux: Yachebada

by paul feitzinger

"Yachebada" http://pfeyz.com/music/yachebada.mp3 http://pfeyz.com/music/yachebada.ogg Electric bass, two acoustic guitar tracks, two vocal tracks with some live coded buffer granulators in Supercollider, snare drum with delay and distorted casiotone. Recorded in Ardour2 with a couple of plugins for compression and a lil' EQ. Reminds me of later-era Earth and the Boredoms. If anybody knows of a language that "yachebada" sounds like something in, let me know, because it's just improvisational gibberish. paul

13 years, 9 months

Re: [LAU] [Rakarrack-users] multiplying signal by external synth

by Renato Budinich

On Mon, Feb 21, 2011 at 5:32 AM, Ryan Billing <ryjobil(a)gmail.com> wrote: > No, the preset used in the video was not in the banks. I just started with > "New", then added Vocoder from "Put order in your Rack" button. Load one of > the internal presets then tweak with things to get the levels correct for > Aux level and other things.Usually output level needs to be increased quite > a bit. > uh, I've would have sworned there was some distortion first in the effect chain (to beef up the carrier I thought)... can't check the video right now > 2 ways to reduce vocoder CPU usage : > 1) Set number of bands to 16 or so (diction is less clear) > 2) Use a Downsample setting of 22050 or less in vocoder from Preferences. > thanks, I'll certainly try that. > This is part of the reason I hope to use the FFT in a new Vocoder mode. > Probably the FFT could be used for signal analysis, then I could possibly > apply it to 8 filter bands with adaptable frequency and resonance. > > The other thing I need to do is add a "Stereo" switch so it only processes > the output in mono--- will cut CPU usage in half for the output filters, > which is a big reduction ;) > > > On Sun, Feb 20, 2011 at 2:09 PM, Renato <rennabh(a)gmail.com> wrote: > >> On Sun, 20 Feb 2011 13:45:50 -0900 >> Ryan Billing <ryjobil(a)gmail.com> wrote: >> >> > this is nearly what an FFT vocoder does, while a phase vocoder is >> > more in line with this. >> > >> > You would window both signals, convolve via FFT, then iFFT to >> > transform back to audio. Overlap and add... >> > >> > In my list of things to try is to do this exactly -- I think it would >> > be a nice lower cpu alternative to the Vocoder, and it will be >> > similar to the Vocoder with 256 or 512 bands. Really good diction. >> > >> > The short answer is, yes this can be done, and yes it would be really >> > interesting :) >> > >> > >> >> great :) >> >> today fiddled around first time with the vocoder and it was very >> cpu hungry (~80% in rakarrack top right, ~30% in 'htop') and causing >> lots of xruns - I wasn't on realtime kernel though so I'll give it >> another try. >> >> also, is the preset you used in the vocoder youtube video in one of the >> banks? >> >> cheers >> renato >> > >

13 years, 9 months

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Linux-audio-user February 2011