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-- Hai! I'm in school!

Posted by wizniz on Oct-13-2006 13:51:

Hai! I'm in school!

My teacher left the substitute this assignment for us for a grade, and frankly, I've no clue wtf it means.

Help plz. Kthx

love,
will

assignment:
"Define and explain resonance as it relates to the formant properties and harmonic series of an acoustic instrument."

Posted by StanVoid on Oct-13-2006 13:53:

Re: Hai! I'm in school!

Posted by Dervish on Oct-13-2006 13:55:

Re: Hai! I'm in school!

quote:
Originally posted by wizniz
My teacher left the substitute this assignment for us for a grade, and frankly, I've no clue wtf it means.

Help plz. Kthx

love,
will

assignment:
"Define and explain resonance as it relates to the formant properties and harmonic series of an acoustic instrument."

Resonance of a string

Strings under tension, as in instruments such as lutes, harps, guitars, pianos, violins and so forth, have resonant frequencies directly related to the mass, length, and tension of the string. The wavelength that will create the first resonance on the string is equal to twice the length of the string. Higher resonances correspond to wavelengths that are integer divisions of the fundamental wavelength. The corresponding frequencies are related to the speed v of a wave traveling down the string by the equation

f = {nv \over 2L}

where L is the length of the string (for a string fixed at both ends) and n = 1, 2, 3... The speed of a wave through a string or wire is related to its tension T and the mass per unit length ρ:

v = \sqrt {T \over \rho}

So the frequency is related to the properties of the string by the equation

f = {n\sqrt {T \over \rho} \over 2 L} = {n\sqrt {T \over m / L} \over 2 L}

where T is the tension, ρ is the mass per unit length, and m is the total mass.

Higher tension and shorter lengths increase the resonant frequencies. When the string is excited with an impulsive function (a finger pluck or a strike by a hammer), the string vibrates at all the frequencies present in the impulse (an impulsive function theoretically contains 'all' frequencies). Those frequencies that are not one of the resonances are quickly filtered out�they are attenuated�and all that is left is the harmonic vibrations that we hear as a musical note.

EDIT: In the process of finding that on wikipedia I found this:

quote:
aural skills, is a key skill learned in Music Theory.

... so imature and bored

Posted by noikeee on Oct-13-2006 13:56:

hrmhrmhrmmmmm

1. type "www.google.com" in your address bar
2. type "resonance" in the search bar
3. click "i'm feeling lucky"
4. click on the "file" menu
5. click on "print"
6. click on "ok"
7. there you go

was this any helpful to you?

Posted by KilldaDJ on Oct-13-2006 14:02:

im going to make some tunes with my ass in a moment (i had a funny cup of tea)

dj jean fart scratch style remix

Posted by wizniz on Oct-13-2006 14:02:

nah if it was just resonance thatd be eas... cuz res is a frequency at which a material object will vibrate, but its the rest of the project that confuses me. how it relatse to the formant properties, etc...

Posted by citric_acid on Oct-13-2006 15:34:

ooo im in school to

my homework from sub

1) find an entrepreneur, what is his/her name?

2) what type of business did he/she start? (service, retail, manufacturing or wholesay)

3) net worth

4) summarize in 8 sentences what this person did.

this would be really easy IF i had a pencil

Posted by UWM on Oct-13-2006 15:35:

Slit your wrists and write it in blood. Emo is sooo in right now.

Posted by citric_acid on Oct-13-2006 15:38:

quote:
Originally posted by UWM
Slit your wrists and write it in blood. Emo is sooo in right now.

i tried that but it became a big blob of red