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 >>>>> >>>>> >>>>> >>>> >>> >> >
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