berghs.kedjan wrote:Yes, as I already said, I like the Pleyel! So, I made a recording with it! I started with Joe Felices Campanella patch and exported the settings to the Pleyel. Then I tried to tune it a little (yes it is possible even in the standard version) so it should work with the Pleyel. I also changed the hammerhardness (and maybe some more...). I hope you don't think it's to much out of tune... ;-)
http://www.youtube.com/watch?v=WVrgr240RB8
God Bless You!
Hello berghs.kedjan,
I had a chance to listen to your YouTube video --- very inspired playing on your part! If I had an observation to make, I might suggest that you continue starting the piece in the key of F major, but you might consider modulating the key tonality upward to G Major and then possibly A-flat or A Major, because five minutes' worth of playing in the same key begs to have one or more keychanges in any given piece.
In the end, I would NOT scrap the video due to uneven microtuning! Actually, the degree of mistuning is far, far less than what is commonly heard in even nicely-maintained pianos experienced in public venues throughout all parts of the world. [EDIT: We Pianoteq users may be aware of this mistuning, because it has been pointed out; the average uninformed listener will probably not notice the degree of mistuning present in the Campanella fxp from K1 that has been frozen and then grafted into a Pleyel fxp.]
* * * * * * * * * * * * * * *
I have a possible explanation of what's happening with the Pleyel's microtuning adjustments in the fxp used in this performance:
In the video, when you listen to the F note (just above Middle C) alone, it sounds fine; by that, I mean to say that the F-note unison strings' tunings are NOT excessive enough to cause the pitch to warble on its own as a single note being sounded. Likewise, Middle C, and the A just below Middle C each sound fine and in tune -- when they are played separately -- but their individual harmonic series tend to intermodulate destructively, when the three notes are played simultaneously as in an the A-C-F inversion of the F major chord featured prominently in this video.
Restated, the warbling sound you hear in the A-C-F f major chord, and on the Bb-D-F b-flat major chord is the result of the individual notes' harmonics reacting unfavorably (in the form of alternating constructive- and destructive soundwave interference) with each other, causing alternate experiences of louder- and softer heard harmonics, perceived in the form of vibrato or tremolo cycling at the rate of approximately 2 to 4 times per second. Similarly, when the F above middle C is sounded with the note F, some two octaves lower, one hears the pseudo-vibrato. *
Now, before anyone jumps to the wrong conclusion that the wah-wah tremolo is engaged -- it is surely NOT engaged in this fxp.
* * * * * * * * * * * * * * * * *
So, where does one go from here, to correct the perceived mis-tuning anomalies?
Owners of the PRO version may wish to reduce the amount of random detuning [EDIT: of my Campanella fxp for K1 that was frozen and grafted to Pleyel] in the two or three middle octaves of the keyboard. Recall that I deliberately de-tuned this area, in order to simulate the way that heavily-played/worn pianos tend to go out of tune in this region. As it sounds in the Pleyel version, the amount of detuning [EDIT: originally designed for the nominally 9' / 2.7 meter K1] does not make a one-for-one fit for the length- and tonal characteristics of this particular piano!
Please remember that longer pianos have lesser inherent inharmonicity; in contrast, much shorter pianos (in this case, some 3+ feet shorter), have strikingly different inharmonicity characteristics, both in the amount of inharmonicity AND the distribution of inharmonicity characteristics across the entire 88-note keyboard.
If I were to encounter this mis-tuning in the Pleyel, that specifically occurs upon trying to graft a K1 fxp onto the Pleyel with zero modifications, I would reduce the level of purposeful detuning, and make up for the slight amounts of "real world imperfection", by compensating for more variability in hammer hardness, note-by-note decay rates, strike points (to accentuate / de-accentuate note-to-note differences in resulting prominent harmonics), damper position and damper decay times.
All of the above suggestions come at the personal experience of tuning hundreds-to-thousands of pianos over the past 40+ years.
Hopefully, this information will help shed some light on this elusive condition, even if it takes repeated readings to fully comprehend its content.
* When two F notes are played together, two octaves apart, and you hear that characteristic warbling sound (about two or four cycles per second), this is an indication that the Pleyel's inharmonicity has NOT been adequately addressed with the K1 fxp's tuning characteristics. In other words, "the notes are not in tune with each other!"
I encounter this condition with numerous freshly tuned pianos that the technicians had slavishly used a strobotuner to tune the fundamental frequency of two different notes, two octaves apart -- but their overtones do not blend in a pleasing way. It's almost as if a deaf Beethoven has tuned the piano, using ONLY the fundamental frequency as the pitch being tuned between two note F's on a short piano!
This is a condition that any good piano tuner would remedy while tuning a given piano by listening to match overtones of various octaves' corresponding notes; it is also a negative condition that necessarily occurs when one tunes an fxp for a 9' piano, and then attempts to "graft" the same tuning characteristic onto the very different amount- and distribution of inharmonicity characteristics across the keyboard of a nominally 5'4" long piano.
Cheers,
Joe
Last edited by jcfelice88keys (19-12-2010 14:47)