Topic by lowendtheory

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  • lowendtheory
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  • Registered: 28-12-2012
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Topic: Request for Pianoteq 7.5; tunable longitudinal modes

Hi,

I have come across this video with a restrung NY Steinway. Key 8 (listen around 6 seconds in) has a different longitudinal mode, about 3 semitones flatter than what is heard in Pianoteq at the default string length. To match the L-mode pitch to the video, I had to increase the string length to ~3.15m. While this fixes the discrepancy, it also changes the inharmonicity, which might not be desirable if one wants to match to a specific piano, e.g. a piano in the house, a highly requested piano, or an exotic 330+cm beast (Borgato 333, Rubenstein R-371, Klavins VCG, etc.)

Allowing tunable L-modes would allow string-length changes to not sound dissonant due to out-of-tune L-modes fouling an otherwise fine preset, as well as give a greater range of tonal possibilities for the hardcore fxp tweakers.

Last edited by lowendtheory (16-11-2020 00:58)

Reply by Jake Johnson

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  • Jake Johnson
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  • Registered: 04-05-2007
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Re: Request for Pianoteq 7.5; tunable longitudinal modes

My understanding is that the string mass, or the relative mass of the winding to the string core, is the other main contributor to the pitch of the longitudinal vibrations. It would be a great control to have--the mass of each string.

Vide: https://www.speech.kth.se/music/5_lectu...dinal.html

(I do wonder, in addition, if the age of the strings has any effect. Would rust and stretching affect the pitch or at least the amplitude of longitudinal vibrations? The envelope? Or would they instead affect the main vibrations, so we hear the longitudinal vibrations differently? Both, I would guess, but perhaps not in the same way, or to the same degree...)

Last edited by Jake Johnson (16-11-2020 17:59)