Pitch Perfect | National Geographic

i’m about to show three passes by a

i’m about to show three passes by a pitch perfect experiment okay like two

pitch perfect experiment okay like two

pitch perfect experiment okay like two minutes of your time what’s that speaker

minutes of your time what’s that speaker

minutes of your time what’s that speaker to speaker yes well done it goes into a

to speaker yes well done it goes into a

to speaker yes well done it goes into a little amplifier there which boosts the

little amplifier there which boosts the

little amplifier there which boosts the sound coming from my phone okay right

sound coming from my phone okay right

sound coming from my phone okay right let me show you let me show you right so

let me show you let me show you right so

let me show you let me show you right so if I put some sand in the top of this

if I put some sand in the top of this

if I put some sand in the top of this right watch this right watch now do you

right watch this right watch now do you

right watch this right watch now do you know what this is see one of these

know what this is see one of these

know what this is see one of these before no no no it’s a speaker so inside

before no no no it’s a speaker so inside

before no no no it’s a speaker so inside that is still all the coils and things

that is still all the coils and things

that is still all the coils and things you get inside a speaker but instead of

you get inside a speaker but instead of

you get inside a speaker but instead of that comb we’ve replaced it with a piece

that comb we’ve replaced it with a piece

that comb we’ve replaced it with a piece of sheet steel alright so we can put

of sheet steel alright so we can put

of sheet steel alright so we can put something on top of it so what I’m gonna

something on top of it so what I’m gonna

something on top of it so what I’m gonna do is set a variety of tones down it

do is set a variety of tones down it

do is set a variety of tones down it like this one okay after demonstrating

like this one okay after demonstrating

like this one okay after demonstrating my tone maker and sprinkling some sand

my tone maker and sprinkling some sand

my tone maker and sprinkling some sand on my perfectly flat speaker I’m left

on my perfectly flat speaker I’m left

on my perfectly flat speaker I’m left with just one question so what do you

with just one question so what do you

with just one question so what do you thinks gonna happen when we turn the

thinks gonna happen when we turn the

thinks gonna happen when we turn the tone on through our steel sheets speaker

tone on through our steel sheets speaker

tone on through our steel sheets speaker I think it’ll jump up just when you

I think it’ll jump up just when you

I think it’ll jump up just when you change the tone okay so what do you

change the tone okay so what do you

change the tone okay so what do you think is gonna happen I think some of it

think is gonna happen I think some of it

think is gonna happen I think some of it will slide off the edges okay that makes

will slide off the edges okay that makes

will slide off the edges okay that makes sense well you reckon actually think

sense well you reckon actually think

sense well you reckon actually think it’s gonna make a pattern okay right

it’s gonna make a pattern okay right

it’s gonna make a pattern okay right that’s we find out yeah I’d say so will

that’s we find out yeah I’d say so will

that’s we find out yeah I’d say so will the sand jump up and down fall off the

the sand jump up and down fall off the

the sand jump up and down fall off the plate make a pattern or none of the

plate make a pattern or none of the

plate make a pattern or none of the above