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Reverb for jOrgan By John Beach Newest post on 2026-03-19 6 replies Save As By JohnR__Most recent post on 2026-02-21___43 replies full screen not full screen__ By Paul StringfellowByMost recent post on 2026-02-21___48 replies Seasons Greetings____By JohnR__Most recent post on 2026-01-12___44 replies SF2 Player plugin____By Dr. Mark Bugeja MD__Most recent post on 2026-01-06___42 replies
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Fluidsynth Reverb Fluidsynth Reverb From John Beach on 2025-08-24 22:41 Recently, I experimented with Fluidsynth Reverb elements Room, Width, Damping and Level. As we know, with the setting of each individual element, the "whole" of the sound-effect equals the sum of those settings. Level has always produced a frequential looped effect relative to its graduated increase, above approximately 0.15. + or -. Level, unfortunately, has the effect of muffling sound, the lower the setting is. This is unrealistic as compared with an acoustic environment where softness and loudness do not impact the reverberative space, or tone quality is not changed by that space. The interrelationship of the elements of Fluidsynth reverb is such that the audio waves of the engaged stops being played are manipulated in the "field effect" created by the parameters of reverb as space size. Level is not realistic. It is comparable to degree of "on" and "off." Using the green light, slider elements on the "Skin" tab in jOrgan construct mode, I tried settings of "Room"=4 (green lights lit), Width=3, Damping=2, and Level=8 I got a realistic fullness of audio without the frequential loop effect. The sound was satisfying, but a relative,acoustic- space size was not really discernible. I believe the solution to this problem in jOrgan is to have soundfonts made from actual sample sets of recorded stops from real pipes, like Hauptwerk has. In such a case, the reverb elements can be avoided completely. John Beach _________________________________________________________________________________________________________* END OF THREAD Seasons Greetings Seasons Greetings From JohnR on 2025-12-31 2025 at 21:41 A Merry Christmas and a Happy New Year to all! JohnR ______________________________________________________________________________________________________________ From John Beach on 2025-12-31 at 00:27 AM Indeed, a Merry Christmas and Happy New Year! John Beach ______________________________________________________________________________________________________________ From Dr. Mark Bugeja MD on 2025-12-31 at 01:33 AM A Blessed Christmas to all and best wishes for the New Year. Mark Bugeja from Malta. ______________________________________________________________________________________________________________ From Peter Hanlon on 2025-12-31 at 02:10 PM A Happy New Year to the jOrgan Community. Has anyone tried to run jOrgan on an Arduino UNO Q yet? It might have appeal for those of us who try to manage hardware like keyboards etc with an Arduino sketch and then pass it to a Raspberry PI running jOrgan. It potentially gets everything back in the one box. From PeterH ______________________________________________________________________________________________________________ POST From JohnR on 2026-01-12 at 22.15 On Fri Jan 02 2026 Peter Hanlon wrote: "A Happy New Year to the jOrgan Community. Has anyone tried to run jOrgan on an Arduino UNO Q yet?" Thank you, Peter, and a Happy New Year to you! No answer to your question probably means that the answer is, "No". The "Organ Forum" certainly provides a lot of guidance for people who use a standard Arduino instead of a commercially- produced encoder, but I don't recall many jOrgan users who have indicated that they have used it for that, let alone the latest very recent release. You have been quick off the mark. ;-) This latest Arduino differs from previous ones in that it includes a microprocessor on the one board. Its OS is a form of Debian Linux, so the standard Linux version of jOrgan will perhaps run on it with no problems. However, it seems to have a RAM of only 785 Kbites (from memory) and I do think that this would be somewhat limiting for dispositions which use a soundfont that is larger than about 200MB. You would find that it would allow only a small number of stops to be active at the one time. I base this on my experience using an RPi 3B, which has a RAM of 1 GB. There are certainly some jOrgan dispositions which I cannot run on my home console because of RAM limitations. Best wishes, JohnR _________________________________________________________________________________________________________* END OF THREAD Reverb for jOrgan Reverb for jOrgan From John Beach on 2026-01-04 at 01:52 I know very little about programming, so my question reflects that ignorance. Would it be difficult to add a "host" capability for reverb plug-ins, such as Convology XT, to jOrgan? What is the impact of external host programs (vst) running with jOrgan on latency, for example? I have never used one while playing jOrgan. A while ago, when Sven turned over future changes to jOrgan to Jonathan A., there was minor discussion of doing a reconstruction of it as a modular program which would have allowed particular sections to be modified without impacting others. The customizer was one such section where modular construction would be an improvement, as each user's physical console setup is different. Is there any, or enough interest to pursue that and is it a possibility? As I listen to other organists, using virtual pipe organ programs (you know which l mean), who post regularly on youtube, I am immediately aware of the difference in the quality of output sound in comparison to jOrgan, particularly, the reverb. Thanks, in advance, for comments and input. Happy New Year to all! John Beach ______________________________________________________________________________________________________________ From JohnR on Sat Mar 07 at 10:17 On Sun Jan 04 2026 John Beach wrote: 'Would it be difficult to add a "host" capability for reverb plug-ins, such as Convology XT, to jOrgan? Hi JohnB, Thank you for raising this matter. My apologies for leaving it so long before replying. I do not own a computer with a RAM large enough to do justice to most HW or GO sample-sets. Since Fluidsynth version 2 was released, jOrgan users have been able to enjoy its greatly- improved reverb sound. However, there is the drawback of the cyclic modulation of the reverb. This "flaw" was apparently unavoidable if the greater quality of the reverb was to be achieved, but for some users, it disqualifies the Fluidsynth 2 reverb from being a satisfactory solution. You ask if a VST reverb plug-in can be used by jOrgan in the quest for a good reverb. It certainly can be. It formed part of Graham Goode's efforts with jOrgan on Puppy Linux many years ago, and its use with Windows PC's is described in a long-standing Graham Goode tutorial in the jOrgan InfoBase: "Using Jack Connections with VST Effects". I believe it would be a great boon for jOrgan users if one of us were to use that tutorial as the basis for a comprehensive report/tutorial on how to achieve a reverb that at least equals and even improves on what is possible from HW or GO. Graham's tutorial is now so old that a revision may be in order. Any offers? Best wishes, JohnR ______________________________________________________________________________________________________________ T POST From John Beach on Sat 07-03-2026 at 14:40 PM JohnR., thank you for your response concerning the fluidsynth reverb. I wish I had the technical capability with programming to be able to do it myself, but I do not. I hope that others, who do, will. John Beach ______________________________________________________________________________________________________________ From Sven Meier on Sun 14-03-2026 at 12:26 AM Hi everyone, since FluidSynth’s reverb has been a recurring topic on the jOrgan list, I thought it might be useful to share that the FluidSynth developers have recently been working on improvements in this area. Please see the quoted message from the FluidSynth mailing list below for details. It might be a good opportunity for us to offer some feedback or suggestions regarding this new feature. https://www.fluidsynth.org/api/ReverbOverview.html Regards Sven --------------------------------------- Dear all, it took almost four years, but now there is an implementation ready for supporting different reverb engines. Pls. check out this GitHub discussion and feel free to share your thoughts: https://github.com/FluidSynth/fluidsynth/discussions/1771 Tom fluid-dev mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/fluid-dev ______________________________________________________________________________________________________________ From John Beach on Sun 14-03-2026 at 1:04 PM Sven, et al., It seems to me that, in order to be fair in our judgments, we would have to hear a sustained organ chord in order to see whether any of the reverb engines that are proposed to replace what is currently used in fluidsynth, eliminates the problem of "looped frequency modulation" that is annoyingly persistent above an, about .015 setting of the Level element in fluidsynth. With the piano, snap and Water drop samples used, it is difficult to say that any particular one is really superior to any of the others. It seems to me that, if the fluidsynth developers know what the particular issue is that we,virtual organ users, have with the reverb level element, they should be, specifically, seeking to eliminate that problem, or, if that is desired in the case of other types of users, at least, offer a version in which the reverb element eliminates the problem of "looped frequency modulation." Thank you for sending the link to this test. Hopefully, something beneficial will result. Until then, Creative Labs EAX is about the best substitute for reverb for those of us who, still, use Creative Labs soundcards that were designed for the soundfont specification and which allow for tinkering with the reverb settings in a reverb studio of the audio console. John Beach ______________________________________________________________________________________________________________ From JohnR on Mon 16-03-2026 at 4:11 PM Hi Sven, Thank you for bringing this promising development in Fluidsynth to our attention. As JohnB said, the samples provided do not exactly suit what we are listening for, but at least two of the reverb engines (apart from the cyclic modulation one) do offer good sound, as far as I could tell. So this could be the answer for jOrgan folk like JohnB, who have a real problem with that modulation in the current FS version 2. I have downloaded the pre-compiled binary for Windows 10, in the hope that I may be able to test it out, using Jack for Windows. At the moment I will need help from a friend to sort it all out, and have approached him about it. Best wishes, JohnR ______________________________________________________________________________________________________________ NEWEST POST From Sven Meier on Thur 19-03-2026 at 7:42 AM NEWEST POST As a follow-up, I’ve tried the new reverb implementation and am happy to report that the updated lexverb engine (“lex”) noticeably improves the audio quality to my ears. The sound is much clearer, free of distortion, and overall responsiveness of pipes has improved as well. I still need to test the Dattorro (“dat”) engine, but so far I’m very pleased with what the FluidSynth developers have delivered. Sven _________________________________________________________________________________________________________* END OF THREAD SF2 Player plugin SF2 Player plugin SF2 Player plugin From Dr. Mark Bugeja MD on 2026-01-06 at 11.04 Hi guys, I came across this: https://www.kvraudio.com/news/bertom-audio-releases-free-sf2-player-plugin-65817 Would this be of any use/ help for jOrgan? Mark ______________________________________________________________________________________________________________ From Lynn Walls on 2026-01-06 at 13:06 Probably not of any use for jOrgan. According to its web page this player only plays ONE preset (i.e., one rank, one voice) at a time from only ONE selected MIDI channel. jOrgan requires something like fluidsynth, which accepts MIDI input from MANY channels playing MANY presets/voices/ranks simultaneously. CLW ______________________________________________________________________________________________________________ From Dr. Mark Bugeja MD on 2026-01-06 at 17.14 Thanks Lynn. I just asked to make sure we don't miss on anything that could potentially enhance the experiences with jOrgan, improving on what we've got so far. Mark _________________________________________________________________________________________________________* END OF THREAD Save As Save As From JohnR on 2026-02-05 at 16:58 Hi all, I noticed that the late Bruce Miles' "organ notes" advises the use of "Save As". I have created a new page for the jOrgan InfoBase to deal with this. Here is the draft of the text, which can easily be modified. I would welcome any suggestions. 'jOrgan no longer offers the option, "Save As", when dealing with Disposition files. When a user wants to make changes to an existing disposition and to save it with those changes, it may be preferable firstly to create a renamed disposition before making any changes, perhaps using the existing name but adding a version number (e.g. "name_version_2.disposition" or "name_v.2.disposition". A simple work-around is to copy the existing disposition "name.disposition", paste it to the Desktop, rename it there, and then return it to the folder from which it was copied. This will leave the original disposition file untouched. The user can confidently open the renamed version in jOrgan, (by double-clicking on it), and then make any changes, before saving it.' Best wishes, JohnR ______________________________________________________________________________________________________________ From Lynn Walls on 2026-02-05 at 00:50 for better clarity, change: "...it may be preferable firstly to create a renamed disposition before making any changes..." to: "...it may be preferable firstly to create a renamed copy of the disposition before making any changes..." CLW ______________________________________________________________________________________________________________ From John Beach on 2026-02-06 at 02:10 I solved the problem of disposition confusion, long ago, by making copies, from the first disposition after it has had all elements customised and soundfonts loaded in fluidsynth, in the individual disposition folder and renaming them according to purpose . For example, English Cathedral- Keyboards (for dispositions played manually) and English Cathedral- MIDI for a disposition used to play MIDI files, exclusively,(with a MIDI sequencer program using virtual midi cable outputting to jOrgan). This is the quickest and least confusing and least work. John Beach ______________________________________________________________________________________________________________ From JohnR on 2026-02-21-at 15:40 PM Many thanks to Lynn and JohnB for your replies. I have inserted Lynn's suggested rewording into the "Save As" jOrgan InfoBase page, and added a concluding sentence. I have also placed an Annotation at para. 9 of Bruce Miles' jOrgan Notes, which can be accessed at https://jorgan.info/base/bm/jorgan_notes.pdf . Best wishes, JohnR _________________________________________________________________________________________________________* END OF THREAD full screen not full screen full screen not full screen From Paul Stringfellow on 2026-02-17 at 23:46 Hi, I’m trying to use jOrgan on a Pi to make a simple MIDI controller. I’ve got most of it figured out now, but when I set jOrgan to full screen, it leaves a bar top and bottom that you can see the desktop behind. Has anyone come across this and know how to fix? Thanks, Paul ______________________________________________________________________________________________________________ From John Beach on 2026-02-18 at 01:18 Usually, when the condition you describe happens, the change to "Full view" is made by clicking on the display symbol in the upper righthand corner of the "x"that closes the window. I believe that, if the display is not "full," there will be two small squares, one slightly offset from the other, and when you click on them, the change to full-view display will occur. John Beach ______________________________________________________________________________________________________________ From Paul Stringfellow on 2026-02-18 at 01:27 Thanks John. It’s not that. I’m accessing full screen from the menu. I tried to send a photo, but the list doesn’t allow it. Paul ______________________________________________________________________________________________________________ From JohnR on 2026-02-18 at 06:55 Hi Paul, Welcome to the Mailing List. Have you tried to use the Customizer? Full Screen is enabled by going to the Customizer, page 2, and clicking where appropriate. Try it. Best wishes, JohnR ______________________________________________________________________________________________________________ From Paul Stringfellow on 2026-02-18 at 06:59 Hi John, Yes, that’s what I’ve done… Paul ______________________________________________________________________________________________________________ From JohnR on 2026-02-18 at 09:58 Hi Paul, Your reply is too short to be truly informative. But I assume it means that you have tried that (clicking on the "0.0" each time on page 2 of the Customizer and then on "FINISH"), but it made no difference. Which disposition are you using? Best wishes, JohnR ______________________________________________________________________________________________________________ From Paul Stringfellow on Wed, Feb 18, 2026 11:03 PM Hi John, I wasn’t confused as to how to enable full screen mode, only that it wasn’t working. I’ve just worked out how to get the OS to hide the taskbar (nothing ever simple with linux!), and that seems to have worked, the full screen now fills the screen nicely. Thanks for your help. Paul ______________________________________________________________________________________________________________ From Chris Pearson on Thu, Feb 19, 2026 5:22 AM Hi, Pressing F11 works on my set up. Chris Pearson ______________________________________________________________________________________________________________ From JohnR on Sat, Feb 21, at 14:51 PM Hi Paul, Congratulations at solving your problem! I've been using RPi's for years now, for jOrgan and as a desktop, and I've never noticed that particular problem. I put it to Google AI, and it returned two solutions, the choice depending on how recent the RPi OS is. Best wishes, JohnR _________________________________________________________________________________________________________* END OF THREAD XX