Le 23/06/2016 14:07, S D a écrit :
A linux-audio-user member wrote me a message off list about the
recording of the piano piece Lost Isle that brought up a point I
thought others might find interesting.
He wrote--
> OFFLIST because it's -somewhere- critic!
>
> At some moments in lost isle,on the *forte* notes but not only the
> lower notes tends to do it too, reverb seems too add some strange
> and unpleasant harmonics, specially in the left side. e.g. around 0'44
I responded--
Thank you for the comments. The sound you hear at ~44 seconds into the
piece is an octave chord at a couple of the lowest C's on the piano
(which is why you hear it primarily from the left side of the stereo
instrument, where the bass notes exist at the left from a pianist's
perspective), played forte (accented, loud). The overtones you hear
are the result of the modeling of the copper-wire wound bass notes
which are actually present on a real acoustic grand piano, and are
heavier (add more overtones/harmonics) in smaller grand pianos such as
the Steinway Model B piano that is modeled here by Pianoteq, where the
actual physical piano is only between 5-6 feet from front to back.
Bass notes on a grand piano are noted for the many and complex
overtones they have as a result of the wire coil wrapped around them
in order to provide weight and the lower fundamental tone (the actual
note frequency intended for that piano key) without having to tune the
string too loose or make it too long (some grand pianos make those
lower strings up to about 12 feet long to try to obtain a purer tone).
In this respect, Pianoteq is actually modeling the grand piano very
precisely. It is not a mistake; it is the way a grand piano actually
sounds. :-)
Thanks and best wishes,
Steve
Thanks for this acoustic & physics piano lesson :)
I'm pretty sure than am not alone on the list to have a very little
understanding of how & why a real grand piano is built.
Cool to reconnect to physical instruments in this sampled world!
Greets,
--
Fred,
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