Mechanical Music Digest  Archives
You Are Not Logged In Login/Get New Account
Please Log In. Accounts are free!
Logged In users are granted additional features including a more current version of the Archives and a simplified process for submitting articles.
Home Archives Calendar Gallery Store Links Info
MMD > Archives > November 2002 > 2002.11.18 > 12Prev  Next


Solenoid Pianos Can Duplicate a Human Performance
By Travis Martin

This is an interesting concept.  As you say, there is no theoretical
reason why a solenoid couldn't duplicate human performance.  I think
I'd drive the solenoid with a synthesized waveform, made by turning
its driver on and off at a high rate and varying the width of the on
time.  Since the mass of the armature cannot respond to these fast
pulses, it has the effect of giving infinitely variable force curves.
In this way, very high efficiency can be attained since there is almost
no power lost to heat in varying the current to the solenoid as would
occur with an analog driver.

I've daydreamed of letting a computer analyze a sound recording,
then breaking the notes down and playing them.  If the same computer
was equipped with a microphone input, it could be self-calibrating,
constantly modifying the output to more nearly duplicate the recording,
thus compensating for differences in pianos and rooms.  This would
solve the problem of no roll library -- feed it an audio CD of Van
Cliburn!  And writing routines to emulate various pneumatic reproducers
should be straightforward, then you'd inherit the existing roll
repertoire.

The problem, of course, is that there is not enough market for such
a device to justify the terrific amount of software development that
would be required.  The hardware technology is already readily
available and wouldn't be terribly hard to implement.

I'm very new to this hobby and have been voraciously reading
everything I can put my hands on.  I just bought a 1930 Chickering
with the Ampico B that I haven't even received yet and am looking
forward to restoring it.

Can anyone tell me what the latest news is on the Power Roll?
I have read what I could find with great interest and think I'd like
to have one.

Travis Martin


(Message sent Mon 18 Nov 2002, 11:36:44 GMT, from time zone GMT-0600.)

Key Words in Subject:  Can, Duplicate, Human, Performance, Pianos, Solenoid

Home    Archives    Calendar    Gallery    Store    Links    Info   


Enter text below to search the MMD Website with Google



CONTACT FORM: Click HERE to write to the editor, or to post a message about Mechanical Musical Instruments to the MMD

Unless otherwise noted, all opinions are those of the individual authors and may not represent those of the editors. Compilation copyright 1995-2018 by Jody Kravitz.

Please read our Republication Policy before copying information from or creating links to this web site.

Click HERE to contact the webmaster regarding problems with the website.

Please support publication of the MMD by donating online

Pay via PayPal

No PayPal account required

                                                       
Translate This Page

. .