From a Corvette mail list. Have a listen before you read how it was done.
RichK
Here is an example of what it really means to "tune" a car. Not a
Corvette, but it is a race engine...
Try http://www.tauzero.co.uk/other/Chauffe2.mp3 Or
http://astro.temple.edu/~kmr/Chauffe2.mp3
<http://astro.temple.edu/%7Ekmr/Chauffe2.mp3>
The write-up explaining it all: First you'll hear a 10-cylinder, 750
horsepower Asiatech F1 engine being warmed up. Then it performs a
rousing version of "When The Saints Come Marching In", to the delight of
assembled pit staff and journalists.
Here's how the magic was achieved (technical/musical details via F1
Racing magazine):
As we all know, a V10 engine produces five combustions per revolution at
a frequency per second of 60/(5 x revs per minute), which equals 12/rpm.
Therefore, to work out the revs you need to hit a particular musical
note, you multiply the note's frequency by 12. To play a 440Hz 'A', for
example, you need 5,280rpm. For 'C', use 3,139rpm, for 'F' 4,191rpm, and
so on.
Asiatech's French technicians (the engine, despite its name, is derived
from a Peugeot design) simply programmed their engine to run through the
various rev/note ranges in the correct sequence. The result is delightful.
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/// what is needed. It isn't that difficult, folks.
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