To close the loop on the issue below -- turned out to be an application-level bug on our end, nothing to do with FluidSynth. Thanks Element Green for the help to isolate the problem!
On Tue, May 24, 2016 at 2:05 PM, Ien Cheng <i...@alum.mit.edu> wrote: > Hi Element - just wanted to follow up with this. The reverb setting had no > effect. However, I think I've found a bug in the integration code with the > FluidSynth library -- so it may have nothing to do with FluidSynth after > all. If I find something interesting that is related to FluidSynth, I'll > let you know. Again, thank you for all your help with this so far. --Ien > > On Thu, May 19, 2016 at 10:25 PM, Element Green < > elem...@elementsofsound.org> wrote: > >> Yeah, that is probably the best way to enable/disable it. I think there >> might be a C API call as well. >> >> Element >> >> On Thu, May 19, 2016 at 8:21 PM, Ien Cheng <i...@alum.mit.edu> wrote: >> >>> Thanks, that definitely sounds worth trying. The best (only?) way to >>> turn off reverb is via the synth.reverb.active setting? >>> >>> >>> On Thu, May 19, 2016 at 10:17 PM, Element Green < >>> elem...@elementsofsound.org> wrote: >>> >>>> Hmm, reading back over your original problem description, I think the >>>> first question should be whether the voice is really continuing or not. It >>>> could actually be one of the effects, such as reverb, which is causing the >>>> sound to extend on for a long time. Try turning off the reverb and chorus >>>> units to see if that "fixes" the problem. Each instrument has its own >>>> reverb send calculation, so you might not notice this until an instrument >>>> has the reverb setting above a certain level. >>>> >>>> Element >>>> >>>> >>>> >>>> On Thu, May 19, 2016 at 7:36 PM, Ien Cheng <i...@alum.mit.edu> wrote: >>>> >>>>> Thanks - >>>>> >>>>> Yeah, I'm not getting any problems with the files in MuseScore, which >>>>> I know uses FluidSynth. >>>>> >>>>> The context I'm getting the problem is in an Android app -- using this >>>>> fluidsynth-android >>>>> <https://bitbucket.org/kunstmusik/fluidsynth-android> repo. I wonder >>>>> if it has something to do with the lower processing power of the phone? >>>>> >>>>> --Ien >>>>> >>>>> On Wed, May 18, 2016 at 12:53 PM, Element Green < >>>>> elem...@elementsofsound.org> wrote: >>>>> >>>>>> Hello Ien, >>>>>> >>>>>> I got your samples you sent me, for reference: >>>>>> FluidR3 GM2-2-0-52-Ahh Choir.sf2 >>>>>> 8bitsf-0-0-PIANO 1.sf2 >>>>>> >>>>>> With the choir instrument, the default release on the global >>>>>> instrument zone is 3 seconds. The velocity of the key being pressed >>>>>> determines the release time of the volume envelope, as set by the Preset >>>>>> Zones. From 3 seconds (maximum velocity) to 1.8 seconds (lowest >>>>>> velocity). >>>>>> >>>>>> The 8 bit piano sound has a release of a half a second. >>>>>> >>>>>> Both of these seem to work as expected (tested in Swami and the >>>>>> fluidsynth shell with noteon/noteoff commands). In the problem scenario >>>>>> you are talking about, how are you sending notes to FluidSynth? Are you >>>>>> playing a MIDI file or pressing keys on a keyboard or something else? >>>>>> >>>>>> Cheers. >>>>>> >>>>>> Element >>>>>> >>>>>> >>>>>> On Wed, May 18, 2016 at 10:23 AM, Ien Cheng <i...@alum.mit.edu> wrote: >>>>>> >>>>>>> HI Element Green! >>>>>>> >>>>>>> Thanks for your continued help with this. Much appreciated. >>>>>>> >>>>>>> As requested, attached at two soundfonts showing this problem. >>>>>>> >>>>>>> Let me know if I can provide anything further to help figure this >>>>>>> out! >>>>>>> >>>>>>> --Ien >>>>>>> >>>>>>> >>>>>>> ---------- Forwarded message ---------- >>>>>>> From: Element Green <elem...@elementsofsound.org> >>>>>>> Date: Wed, May 18, 2016 at 11:56 AM >>>>>>> Subject: Re: [fluid-dev] Problem with certain "loud" soundfonts not >>>>>>> stopping after note off >>>>>>> To: FluidSynth mailing list <fluid-dev@nongnu.org> >>>>>>> >>>>>>> >>>>>>> Hello Ien, >>>>>>> >>>>>>> In such a situation I would load up the SoundFont into an editor >>>>>>> (such as Swami) and have a look at the release time for the particular >>>>>>> instrument you are using. Note that the calculation of the release >>>>>>> time is >>>>>>> based on the release value of the matching instrument zone multiplied by >>>>>>> the release multiplier in the preset. If you could personally send me >>>>>>> the >>>>>>> SoundFont or let me know how I could obtain it, I would be happy to >>>>>>> check >>>>>>> this for you (just let me know what which preset and note you are >>>>>>> playing). >>>>>>> >>>>>>> Best regards, >>>>>>> >>>>>>> Element Green >>>>>>> >>>>>>> >>>>>>> On Wed, May 18, 2016 at 9:35 AM, Ien Cheng <i...@alum.mit.edu> wrote: >>>>>>> >>>>>>>> Hi Element Green - >>>>>>>> >>>>>>>> Thanks for your quick reply! >>>>>>>> >>>>>>>> It could well be something to do with release time. However, the >>>>>>>> sound is definitely continuing indefinitely. Perhaps the sounds aren't >>>>>>>> trailing off properly to go below the perceptible threshhold? Are >>>>>>>> there any >>>>>>>> settings I can play with to tune this behavior to solve this problem? >>>>>>>> >>>>>>>> --Ien >>>>>>>> >>>>>>>> On Wed, May 18, 2016 at 11:17 AM, Element Green < >>>>>>>> elem...@elementsofsound.org> wrote: >>>>>>>> >>>>>>>>> Hello Ien, >>>>>>>>> >>>>>>>>> FluidSynth does some pre-calculations on sample data to determine >>>>>>>>> when the sound becomes "imperceptible" ("reaches the noise floor"). >>>>>>>>> I'm >>>>>>>>> not really familiar with this code and have often wondered how well it >>>>>>>>> works. For example, in the case of Swami, I don't believe I'm >>>>>>>>> pre-calculating these values and I've questioned whether this is >>>>>>>>> working >>>>>>>>> right (in the case of Swami's use of FluidSynth at least). At any >>>>>>>>> rate, if >>>>>>>>> an instrument has a long release time, FluidSynth will try to optimize >>>>>>>>> things to turn off the voice when it is no longer "perceptible". It >>>>>>>>> will >>>>>>>>> also prioritize voices to terminate if it runs out of the allocated >>>>>>>>> polyphony. It seems you are saying that a sound continues past the >>>>>>>>> note >>>>>>>>> off though, which likely has to do with the instrument's release >>>>>>>>> time. Are >>>>>>>>> you certain that FluidSynth is maintaining the voice past the end of >>>>>>>>> the >>>>>>>>> designated release interval? >>>>>>>>> >>>>>>>>> Best regards, >>>>>>>>> >>>>>>>>> Element Green >>>>>>>>> >>>>>>>>> On Wed, May 18, 2016 at 9:07 AM, Ien Cheng <i...@alum.mit.edu> >>>>>>>>> wrote: >>>>>>>>> >>>>>>>>>> Hi everyone - >>>>>>>>>> >>>>>>>>>> I'm seeing an odd problem where the synth is not stopping the >>>>>>>>>> sound after note off with certain "loud" soundfonts. Specifically, >>>>>>>>>> with the >>>>>>>>>> standard GM grand piano soundfont, everything works great, notes on >>>>>>>>>> and >>>>>>>>>> notes off as expected. >>>>>>>>>> >>>>>>>>>> Switch to a soundfont that has a sharper or fuller sound (like a >>>>>>>>>> 8bit arcade sound or a full choral ahh sound) and the synth doesn't >>>>>>>>>> turn >>>>>>>>>> off the notes -- or it sounds like the echo or tail of the sound just >>>>>>>>>> continues indefinitely even after the note off. >>>>>>>>>> >>>>>>>>>> I notice that if I reduce the gain, the problem goes away. >>>>>>>>>> >>>>>>>>>> Is this some kind of flooding or other problem? >>>>>>>>>> >>>>>>>>>> Apologies if I'm not asking correctly or with the right >>>>>>>>>> terminology! Any help or tips appreciated. >>>>>>>>>> >>>>>>>>>> --Ien >>>>>>>>>> >>>>>>>>>> _______________________________________________ >>>>>>>>>> fluid-dev mailing list >>>>>>>>>> fluid-dev@nongnu.org >>>>>>>>>> https://lists.nongnu.org/mailman/listinfo/fluid-dev >>>>>>>>>> >>>>>>>>>> >>>>>>>>> >>>>>>>>> _______________________________________________ >>>>>>>>> fluid-dev mailing list >>>>>>>>> fluid-dev@nongnu.org >>>>>>>>> https://lists.nongnu.org/mailman/listinfo/fluid-dev >>>>>>>>> >>>>>>>>> >>>>>>>> >>>>>>>> _______________________________________________ >>>>>>>> fluid-dev mailing list >>>>>>>> fluid-dev@nongnu.org >>>>>>>> https://lists.nongnu.org/mailman/listinfo/fluid-dev >>>>>>>> >>>>>>>> >>>>>>> >>>>>>> _______________________________________________ >>>>>>> fluid-dev mailing list >>>>>>> fluid-dev@nongnu.org >>>>>>> https://lists.nongnu.org/mailman/listinfo/fluid-dev >>>>>>> >>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>> >> >
_______________________________________________ fluid-dev mailing list fluid-dev@nongnu.org https://lists.nongnu.org/mailman/listinfo/fluid-dev
