Jonathan Leonard wrote: > The fact that it is intermittent should indicate there is not a format > problem. If you are sending alot of note-on events to a sound > generator without offs, you could easily accumulate voices in the > synth engine beyond what is set as a limit, or what the engine can > provide. For example if you played a roll on a cymbal sample....each > hit creates a voice that continues until sample end. Maybe you will > not notice a problem with short snare samples. Drum samples should be > in a one-shot mode within the sampler of choice. Previously having > written my own audio to midi triggers I implemented a procedure that > always fired a note-off first, then the note-on to avoid using any > kind of fixed trigger duration or length. Just an automatic kill > prior to trigger which is more assurance when creating dense events. > > Fluidsynth might have some modes like loop vs one-shot. But if you > are triggering long samples and there is no voice throttling, the CPU > use will climb as you add voices that are sustaining. An engine in > this state could easily experience an intermittent fault. > > And feel free to share that tidbit about the script and note-offs that > Ralf mentioned. ;) > > Cheers,
Hi Jonathan :) a better solution would be to have a matrix that can assign defined lengths to notes, because I tested my D4 too and I found out what the reason is. Please excuse the blah-blah, I'm short in time and not able to edit the notes I made while doing the test: Hi :) I know what's the problem with the D4 after making a test. Doing the test was a PITA, because of accidents, but it is worth while, because now everything is cleared. 1. $ jackd -Rdalsa -dhw:0 -r96000 -p512 -n2 2. $ qjackctl 3. $ qsynth -j 4. Connected readable client Swissonic USB MIDI device to writable client FLUID Synth. *** Alesis D4 *** A Dauz pad was connected to trigger input 1 and a dynamic mic to trigger input 2 of the D4. MIDI out of the D4 was connected to the USB MIDI device input. Qsynth automatically started with JV1080_Standard_Set.sf2 loaded. Internal the D4 all notes were played, while Qsynth very seldom played a note. 5. $ qtractor 6. Disconnected readable client Swissonic USB MIDI device to writable client FLUID Synth and connected readable client Swissonic USB MIDI device to writable client Qtractor. Qtractor recorded all notes, but the lengths of the the notes were very short. 7. Disconnected readable client Swissonic USB MIDI device to writable client Qtractor and connected readable client Qtractor to writable client FLUID Synth. The notes were played by Qtractor and Qsynth got the MIDI signal, but Qsynth very seldom played a note. I edited the length of the recorded notes and after that Qsynth was able to play every note. *** Yamaha D-11 *** Disconnected MIDI out of the D4 to the USB MIDI device input and connected it to the D-11 midi OUT. Unfortunately after connecting the D-11 to a self-made 9 V power supply the F 630 mA fuse was blown and I only have T 100 mA and > 1 A fuses handy, in addition I got a tinnitus similar to white noise to the left ear, which is my better ear. While a T 100 mA fuse was blown too, the tinnitus starts fading away. The D-11 manual says that it should be used with a Yamaha PA-3, PA-4 or PA-40 power supply. The internet says PA-3 B and C come with 12V 700 mA, PA-4 G comes with 9V 1 A and PA-40 comes with 10 V 1 A. The tinnitus totally fade away and I noticed that my Yamaha TG33 is using a PA-3 10V 700 mA, so I could go on. After connecting ALSA MIDI by QjackCtl I was able to play Qsynth by the 8 pads and a pedal without any trouble. *** Résumé *** The notes by the D4 are to short to play Qsynth directly. Recorded notes can be edited by a sequencer and then the D4 is fine too. Btw. the Dauz pad and D4 responding quality is as good as that of a real drum, while the responding quality of the DD-11 isn't as good as that of a real drum. Using another T 100 mA fuse I could connect a Boss TU-12H chromatic tuner to the self-made power supply, but it was blown when I connected a Boss OD-2 turbo overdrive. I guess I need to get a fuse with more than 100 mA or I need to use my laboratory power supply if I need pedal effects today. Those accidents were the reason why I don't like to do such tests when I'm short in time ;), anyway I was much to curios to delay the test. Hth, Ralf _______________________________________________ 64studio-users mailing list [email protected] http://lists.64studio.com/mailman/listinfo/64studio-users
