Welcome Guest! To enable all features please Login or Register.

Notification

Icon
Error

Forum Jump  
Options
Go to last post
Posted on Thu, Oct 15 2020 10:28
by Macker
Joined on Tue, Aug 21 2018, London, Posts 140

Some Long and Legato articulation types suffer from a horribly big discontinuity in velocity-controlled volume-mapping for note velocity values below and above 82.

For example, my tests show that in Legato Regular vibrato, velocity-controlled volume leaps up by 11 LU (EBU Momentary) when note velocity changes from 81 to 82; then for velocity values up to 127 it continues upwards through its velocity-controlled volume map, relative to that egregious leap in volume level. This huge and painfully obvious discontinuity makes a nonsense of both live playing and note-programming, and is very tedious to correct by subsequent editing.

Long Molto vibrato behaves as it should (though on purely subjective listening, I'd have preferred its upper vel-controlled volume range to be just a tad louder, such that the entire loudness contour is more smooth - but that's probably splitting hairs).

I really don't want SysPro to have serious faults, any more than VSL does. I'm sorry but the painful fact is, it has.

Posted on Thu, Oct 15 2020 11:33
by Macker
Joined on Tue, Aug 21 2018, London, Posts 140

Test Setup and Evidence of SysPro Note Vel-control behaving badly.

 

Synchron Player (v1.1.1954) AU directly plugged into LPX (v10.4.8).

VSL Factory preset: SySPro 1st Violins-14 Pro XF; Mixer preset: Default: VXF=Off, 0; Dynamic Range = Max.

MIDI sequence of 127 half notes of 1.75 secs length, all G3; note velocities successively increased by 1, such that the whole sequence plays the full range of note velocities increasing from 1 to 127; played back at 60 BPM.

Volume measured by Melda MLoudnessAnalyzer (v14.08), captured as EBU Momentary loudness vs Time graph.

Results of 2 test cases uploaded here: Long Molto Vib Vel-Ctrl (OK); and Leg Reg Vel-Control (Fault). The pictures both show the loudness (vertical axis) of all 127 test notes played back over a 256 second period (horizontal axis).

A 3rd pic is also uploaded, showing the MIDI note test sequence in LPX.

File Attachment(s):
SySPro_Long_Molto_Vib_Vel-Ctrl_(OK).png (1,915kb) downloaded 27 time(s).
SySPro_Leg_Reg_Vel-Control_(Fault).png (1,968kb) downloaded 23 time(s).
Note_Vel_Test_MIDI_Sequence.png (1,663kb) downloaded 12 time(s).

You cannot view/download attachments. Try to login or register.
Posted on Fri, Oct 16 2020 09:30
by Macker
Joined on Tue, Aug 21 2018, London, Posts 140

In case some are wondering what a good quality Note Velocity-controlled volume contour should look like, a fine and pretty much flawless example can be seen in my attachment No 1 below. This exemplary case is Appassionata Violins in VI Pro, played by the same MIDI note test sequence I've used above. I've also attached a pic of the VI Pro to show the test settings.

However, the same test applied to the Synchronized version of App Strings produces a very different result, as seen in my attachment No 3 below. 

Moreover, I'm also seeing similarly broken Note Vel-Controlled volume contours in SyzDimStrings. I don't want to post those results because, believe it or not, I'm really not into publishing negativity.

File Attachment(s):
VIPro_AppS_Note_Vel-Test_Result.png (2,376kb) downloaded 8 time(s).
VIPro_Used_In_AppS_Note_Vel-Ctrl_Test.png (1,714kb) downloaded 8 time(s).
SyzAppS_Long_Note_Vel-Test_Result.png (2,264kb) downloaded 10 time(s).

You cannot view/download attachments. Try to login or register.
You cannot post new threads in this forum.
You cannot reply to threads in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.