On Sun, 8 Apr 2012 15:23:50 +0200 David Adler <david.jo.adler@xxxxxxxxx> wrote: > On Sun, Apr 8, 2012 at 10:40 AM, Fons Adriaensen wrote: > > On Sat, Apr 07, 2012 at 11:57:57PM +0200, David Adler wrote: > > > >> My experience with Yoshimi (under Linux) is excellent, > >> Zynaddsubfx tended to produce dropouts/clicks and > >> sometimes exited from Jack, back when I used it. > > > > Another beginner's problem: whatever instrument I select, > > there always seems to be a second one active: it produces > > a short 'ping' with a repeat echo on it, and seems completely > > unrelated to the patch I actually want. And I can't get rid > > of it... > > I don't here such a 'ping' on all patches, but I do recall having > had hard times trying to get a smooth sounding attack, despite > sufficiently long attack times. > > When starting yosh without any instrument/parameters, there > are clicks/plops/pings on note on. Not surprising of course, > due to the short default amplitude-attack times and near sine > default waveforms. > What I do notice is that for SUBsynth, increasing attack time to > a value of ~10 is sufficient to remove note-on clicks for even > moderately low frequencies, as should be expected if the unit > is [ms]. For ADDsynth and PADsynth in contrast, a value of >35 > just barely silences the somethat 'plop'-like attac sound. > The same for release times. > Naively asking my ears, I'd say those plops are not tied to the > attack ramp of the env, the ramp just decreases the volume of > some plop, irrespective of the note frequency. > > I find this not to be audible (or perceived as part of the > characteristic attack spectrum) for most patches with > significant HF content. > > This is no different in Zynaddsubfx. > Not sure about any repeat echo. > > > best, > d I've just done a quick and dirty test of this with quite interesting results. For a short while I have two files on my website: http://www.musically.me.uk/Attack_Test_0mS.mp3 and http://www.musically.me.uk/Attack_Test_15mS.mp3 These were recorded using yoshimi and the default AddSynth sound simply triggered with the virtual keyboard. Unfortunately, I don't have time to cross check with subSynth at the moment :( If you look at them with audacity and at a very stretched scale, you will see that they all start with a negative going half-cycle and there is absolutely no offset, and no significant distortion. Therefore the seeming pulse sound is a purely psycho-accustic effect. The 15ms attack ones are more interesting as they show a nice increasing amplitude at low pitches (which sounds nice and smooth) but that rapidly dissapears as you go up in pitch. This I would suggest is a bug in the implementation - apparently true of both zyn and yoshi. 15mS attach should *always* be 15mS. I don't usually cross-post but I think this will be of significant interest on the yoshimi list. -- Will J Godfrey http://www.musically.me.uk Say you have a poem and I have a tune. Exchange them and we can both have a poem, a tune, and a song. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
