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7516 discussions

Re: [LAD] DrMr: a new lv2 sampler/drum machine plugin

by Alexandre Prokoudine

On Tue, Feb 14, 2012 at 5:49 PM, Nick Lanham wrote: > Firstly, yes, at some point I would like to have kit editing/creation > available from the GUI. This is non-trivial however, and a bit down the > road. > > To your second point, I agree that it's non-optimal to have to fire up > hydrogen to make minor changes to kits and the like. However, I still think > DrMr improves the situation, as it sits nicely in your host, saves all your > parameters, and doesn't require any external routing. Of course if you're > fine with setting up all the external routing and kit loading etc, you > should just avoid DrMr all together, hydrogen is more fully featured and > almost certainly more stable anyway, but the whole point of me writing DrMr > was that I got sick of having to set up both my host and hydrogen for every > track i wanted to open. Nooooooo, I actually quite like the idea of being able to JFD drums programming directly in a DAW :) The UI could do with quite a bit of love (it's really OK for an initial release), but DrMr is already a huge win for me. > But yes, kit customization is in the pipeline, although behind getting the > core solid and stable. What are the top priorities for you right now? Alexandre Prokoudine http://libregraphicsworld.org

13 years, 8 months

ladspa commandline host?

by Kaspar Bumke

Hi all, I have been running SooperLooper in headless mode on netbook. I don't have X installed on it and just control SooperLooper (SL) via MIDI and OSC. Occasionally I get some clicks which I hadn't experienced when running it with GUI on my laptop. I have tried playing with the SL setting but can't really avoid this happening. I think it may have something to do with the combination of low spec processor and crappy audio card (I had to compiled linux-rt to get it to work reasonably at all). So I wanted to run it through a declipper/noise gate, until I get a better machine or audio card. I know there is a LADSPA one available but all the LADSPA hosts seem to have a GUI. Is there a LADSPA host that doesn't require running X? Regards, Kaspar

13 years, 8 months

LADSPA: Calf Reverb : connect_port strange bug?

by Harry van Haaren

Hey all, I'm currently trying to fix the reverb in Luppp and I'm running into a rather strange bug: I have an array of floats that is used to set the plugins parameters: its called controlBuffer. The following code connects the ports to the addresses of the float buffer. The crazy thing is: The print outs before & after the connect ports are different! I don't understand how this is possible, but perhaps I'm missing something LADSPA. cout << "Decay: " << controlBuffer[4] << " Wet: " << controlBuffer[8] << " Dry: " << controlBuffer[9] << " preDelay: " << controlBuffer[10] << " highDamp " << controlBuffer[5] << endl; descriptor -> connect_port ( pluginHandle , 0 , buffer ); descriptor -> connect_port ( pluginHandle , 1 , buffer ); descriptor -> connect_port ( pluginHandle , 2 , &outputBuffer[0] ); descriptor -> connect_port ( pluginHandle , 3 , &outputBufferR[0] ); descriptor -> connect_port ( pluginHandle , 4, &controlBuffer[4] ); descriptor -> connect_port ( pluginHandle , 5, &controlBuffer[5] ); descriptor -> connect_port ( pluginHandle , 6, &controlBuffer[6] ); descriptor -> connect_port ( pluginHandle , 7, &controlBuffer[7] ); descriptor -> connect_port ( pluginHandle , 8, &controlBuffer[8] ); descriptor -> connect_port ( pluginHandle , 9, &controlBuffer[9] ); descriptor -> connect_port ( pluginHandle ,10, &controlBuffer[10] ); descriptor -> connect_port ( pluginHandle ,11, &controlBuffer[11] ); descriptor -> connect_port ( pluginHandle ,12, &controlBuffer[12] ); cout << "Decay: " << controlBuffer[4] << " Wet: " << controlBuffer[8] << " Dry: " << controlBuffer[9] << " preDelay: " << controlBuffer[10] << " highDamp " << controlBuffer[5] << endl; Example Output: Decay: 4.7685 Wet: 0.70709 Dry: 0.696707 preDelay: 50 highDamp 0 Decay: 1.5 Wet: 0.25 Dry: 1 preDelay: 0 highDamp 5000 The problem is that the reverb plugin doesn't react to my input parameters, but just processes based on the 1.5, 0.25 wet, preDelay 0, and highDamp 5000 *all* the time, and there's nothing I can do about it. Am I doing something fundamentally wrong? I've tried connecting the ports every process(), once, and then leave them. I've hard coded values, it seems to make no difference. These are the two relevant sources: https://github.com/harryhaaren/Luppp/blob/master/src/ladspahost.hpp https://github.com/harryhaaren/Luppp/blob/master/src/ladspahost.cpp Help appreciated! -Harry

13 years, 8 months

It's official I'm selling the real Ardour Tablet! - "check this out"

by Ronald Stewart

It's official I'm selling the real Ardour Tablet With so many discussions about Ardour and real audio apps running on a Tablet, I decided to offer for sale the original Trinity DAW. Funds are going straight to help moms dementia treatment. You can purchase on ebay or at Indiegogo by making the 1000.00 contribution. Just send me an email where to send the merchandise. ronaldjstewart(a)gmail.com Shipping Worldwide Rock on Linux Pro Audio! and thank again to everyone! Ronald Stewart Indiegogo donation page: http://www.indiegogo.com/Cure-My-Moms-Dementia-Today?a=398903 Ebay page: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=250994835490

13 years, 9 months

Version 0.5.2 of The Newtonator available

by Michael Bechard

Fixed in this version: - Compilation bug due to missing gdkconfig.h file The Newtonator is an LV2 soft synth that uses a unique algorithm based on simple ideas of velocity and acceleration to produce some unpredictable sounds. More documentation can be found on the project website at http://newtonator.sf.net/. Thanks, Michael Bechard

13 years, 9 months

fltk woes

by Malte Steiner

Hi, try to brush up a bit Minicomputer software synthesizer which is in a bet shape. I have all sorts of redraw problems with FLTK, seems it started with FLTK 1.3, does anyone experienced similar things and has some tips to share? Google gave nothing, seems I am the only one. Cheers, Malte -- ---- media art + development http://www.block4.com

13 years, 9 months

64 bit tempo-based time stamp

by David Robillard

Hi all, seeking opinions: I have to choose a way to represent beat-based tempo time in 64 bits. Uses are many, but the main one is event time stamps for plugins. Requirements: * No odd data sizes (for performance / programmer ease) * High precision (ideally close to sample accurate for most tempos) * Fits in the same space as two uint32_t's Questions: * Is "bar" needed? * Use floating point? Rounding errors an issue? Options: /* A (moderate range, ultra precise) */ struct { uint16_t bar; uint16_t beat; uint32_t tick; }; /* B (high range, moderate precision) */ struct { uint32_t bar; uint16_t beat; uint16_t tick; }; /* C (high range, good precision?) */ struct { uint32_t bar float beat; }; /* D (high range/precision, but no bar) */ double beat; I havn't run the math on precision yet, but I am leaning towards C. I actually hadn't considered mixing int and float before writing this email, but it seems the best trade-off, and working with float is certainly more pleasant than fixed point. Thoughts? -dr

13 years, 9 months

help with RtMidi and gtkmm

by alessandro filippo

Hi, I'm learning to write simple audio/midi applications in C++ with RtMidi and gtkmm libraries (version 2.4). This is the application I'm working on: http://www.eclepticbox.altervista.org/index.php/download/finish/2-audio-mid… I got some issues with RtMidi IN (Callback). I followed the RtMidi tutorial and the VMPK example (however this is written with Qt), but the problem is that the GUI freezes when I send some MIDI data and it doesn't refresh the widgets values. Midi Out works properly. I think the problem is in the Midi Callback and in the event/signal managing. I tried some function in order to refresh the gui but they didn't work. This is the smallest extract of code that has the issue (only a spinbutton sending / receiving MIDI Program Change): http://www.eclepticbox.altervista.org/index.php/download/finish/2-audio-mid… The sources are in the src folder, see: sawlidsyngui.cpp sawlidsyngui.h Any help is appreciated.... Thanks ... Alessandro

13 years, 9 months

LV2 and parameter interpolation

by Jörn Nettingsmeier

hi *! total lv2 newbie trying to get my feet wet, so bear with me :) i'm trying to dezip my control ports by using simple linear interpolation. to that end, i'm storing the current values of all control ports in extra fields in the LV2_Handle. they get ramped to the desired value during run(), so that the current values will equal the ones set by the control ports at the end of each run(). now i'm stuck trying to understand where to initialize my current value fields. what i want to avoid is a ramp from default or previous values whenever the plugin is run for the first time. in that case, i want to have no ramp and start cold with the control port value. can i rely on control port data being available during activate() so that i can initialize my current values to the control port values? now i could set the current values to NULL during instantiate and deactivate, but then i'd have an extra conditional in run(), which i'd like to avoid. what is the recommended procedure to deal with this? jörn

13 years, 9 months

LV2 implementer poll (event buffer)

by David Robillard

Hello, I am working on the successor to the event extension and its EventBuffer. This is the buffer used for MIDI in LV2 instruments and such[1]. I need to know: * Does anyone actually use the variable time stamp type stuff? The original idea here was to support tempo time, but it seems unlikely anyone will do that in run() * Does anyone use the event_count field for anything other than iterating over the events? It would be nice to remove this. * Does anyone need the ability for the buffer payload to be not in the same POD chunk as the header? I would be nice to remove this pointer and have the buffer be a POD chunk like everything else. The original idea was so e.g. hosts could make plugins write to fragments of other buffers, but I can't think of a real use for this, and radical simplification is the name of the game here. * Is anyone actually using non-POD events and references? If anyone has any other gripes/suggestions for the event extension, now's the time to make them heard. Speak now or forever hold your peace, etc. Thanks, -dr P.S. I have avoided the "why does event need to be replaced" part to keep it to the point, but if anyone is curious, I can explain

13 years, 9 months

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