Gran Cassa and the interactive instrument Feed-Drum (Part I)

The Feed-Drum is an imperial bass drum with a system of electronic conditioning of the skin conceived by composer Michelangelo Lupone and produced at CRM - Centro Ricerche Musicali, Rome. Through the principle of feed-back, the signal produced by the excitation of the skin was returned to the skin itself in the form of acoustic pressure. The result was the infinite prolongation of the sound. The system controls the damping of the movement of the skin, and therefore the decay rate of the sound, and permits isolation of high frequency modes by the combined action of nodes present on the skin and the amount of feed-back input energy.
The design on the skin surface is a simplified map of the oscillatory modes based on the Bessels functions. The map was limited to 13 diameters and 8 nodal circles, the latter divided into even semicircles (to the left) and odd semicircles (to the right).
A study of the physical behavior of the instruments, its translation into mathematical models and, subsequently, its stimulation with numeric calculation systems, appears to be the most feasible course to take for achieving specific forms of integration and the transformation or invention of new instruments coherent with present-day musical exigencies. The aim is not to imitate the orchestral instruments for facile virtual utilization (typical limiting commercial trend), but rather to enlarge the knowledge of the vibrational phenomenon, to verify the models and to obtain acoustic confirmation of the logical and numerical process.
Gran Cassa was captured live at AUJOURDHUI MUSIQUES music festival Perpignan, France 14 November 2006
Percussion: Jean Geoffroy
More: [e-mail]

[@nntblst]

This thing is just amazing!!!!

[@YASHKOOKMOE]

That's incredible! Excellent... I want one!

[@paastetaa9877]

Hello,ima from Serbia and your video is in my Music book from school

[@florianchurch]

This is really Fantastic !!!

[@juliovaqueroramos4063]

Genial, gracias por el vídeo!

[@debagusadi3626]

Nice drum drum

[@argyrosachinidou4798]

Soo cool!

[@khaledshokry5070]

Thank you! 👏

[@tatopiano]

where can I find the scores?

[@addmin2227]

that was so epic....i was about 1cm away from the screen the whole time

[@HOHNERYAMAHA]

Great.. wonderfull...

[@ramonafaggiano1135]

bellissimo

[@jimmyfigueras4476]

This can be used to play the intro for "Mirko" from Cirque du Soleil's Alegria.

[@lifeofkyle]

Sooper cool

[@phillredfox]

mind blown

[@giuliostudios9670]

good!

[@CarlosTapia-bw2uu]

Is this instrument that made the cinematic "boom" impact sound in soundtrack movies?

[@Ericlb]

I don'T understand how you make that skin vibrate that much

[@RodrigusVI]

@Ericlb Read the description, it has a electronic device with makes that... I didnt really understand how but its like that.

[@tadhgkinsella]

Hey, does anyone know where i can get\buy the score for this ?? thanks

[@LazyBastard69]

Isn't it basically a continuous feedback? The microphone on top pics up the frequencies from the top and feeds them to a speaker under the bass drum. Or does the feedback happen electronically inside the skins, which are auto-vibrating, once the vibration is started? I always thought, that the pattern on the skin is just like a map of the overtone-nodes (i know, probably not exactly the right expression, but you know what i mean) to guide the performer.

[@rshank574]

swarm69 ! I really am not aware of your musical knowledge but would like to inform you that i live in a city of Music from where ancient classical music has made its recognition throughout the world. And coincidentally i'm myself a musician by birth. If you need more explanation i can carry on in the next message.

[@theyusedtocallmejay]

wow

[@giuliostudios9670]

tecnic is very good

[@bassbreaker]

Read about Bessel functions if you really want to understand the vibration. Quite complicated if you haven't taken much math.

[@maui-maui4011]

1:03 It looks like a fake effect, incredible I would like to stay there for a days to try and try that strange effects.

[@emiidoci]

Chi sta guardando questo video per scuola metta like

[@patrickprocopio7797]

Io😪

[@MatsOljare]

How is vibration applied to the head?

[@jesuslover9199]

By pitch matching the lugs...and by buying a head, that resonates much.

[@wiresounds]

efficiency! ha!

[@TheTomthemagic]

sampled

[@makakamakaki]

HAHAH!That really makes me laugh.Cool

[@ryancox5097]

Makes me wanna poop.

[@bronzmusic]

Wow Weird !

[@rshank574]

The Instrument, no doubt, is unique and can be utilized more efficiently than to make useless noise out of it.

[@HeliosPu]

Lu lé a n pèr gnanc a pòst

[@martinnordsiek1874]

2:11 wtf

[@saradelmoro1492]

inutile

[@johnsab7488]

wow