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*stuttering* I’m trying to convince myself
*stuttering* to renovate my apartment …
*stuttering* Or to start renovating at least.
Hello everybody!
Why does Lucas speak so funny?
What is wrong with him?
Is he drunk?
No, he’s not.
I’ll explain it to you
in our test of the Speech Jammer app.
I’m Daniel from vetail-x.com.
See you in a bit!
Imagine the following situation:
You’re sitting in a train compartment,
chatting animatedly.
While discussing an interesting topic
your voices get louder and louder.
But then
you suddenly start to stutter
and you’re unable to produce
a reasonable sentence.
You lower your voices and
you’re able to talk normally again.
Sounds creepy, right?
Two scientists from Japan,
Kazutaka Kurihara and Koji Tsukada,
developed this machine
for which, by the way, they received the Ig Nobel Prize.
This machine, which you can see here,
works very simply.
It uses a directional microphone,
which is a mic that receives a signal
only from one direction,
to record a voice.
A loud speaker
pointed to the same direction
plays the voice with a slight time delay
of a few hundred milliseconds.
So the speaker hears his own words again
but slightly after he said them.
"So, what’s the big deal?" you might say now.
Far from it!
The effect of hearing yourself speak with a slight delay
makes your brain “scientifically speaking”
mash!
This effect is so disruptive
that we are barely able
to produce a reasonable sentence.
It’s called DAF effect
which stands for
Delayed Auditive Feedback.
It is less disruptive
when we read a written text out loud
because the brain uses the text
as a kind of template
which helps us dealing with the distraction.
Stutterers can even train their
speech center with DAF.
But enough with the theory!
We thought: Why not make
fools of ourselves for you
and try it out?
There’s an app called "Speech Jammer",
which does exactly what I just described.
It’s available in the
app stores of your provider.
Lucas already gave you
a first impression.
But equality demands that everyone
has to do it!
*So Lucas, what’s your favorite action movie and why?*
"The Losers"
*stuttering* Nobody knows it
*stuttering* but it’s a great movie
*stuttering* and blblblip …
And uh
*stuttering* it’s like "A-Team" ***.
*whispering* Did I shout, too?
*laughing from the off* What is it about?
Oh, classic.
*stuttering* Special military unit …
*stuttering* betrayed by their own people …
air strikes …
explosions …
*stuttering* Drug lords are
hanged and quatered …
More explosions,
*stuttering* more explosions, more explo …
And the good guys win in the end.
Action movies!
*stuttering* Right, we practice
once a week.
*stuttering* Every Monday from 7 to 9 p.m.
*stuttering* ... at the tender age of 9 years …
*stuttering* Playing drums.
It’s so awesome when you hear
what you just said!
*stuttering* I was ten years old, I guess,
*stuttering* when I watched The Lion King
*stuttering* for the first time.
And I think I was really sad
at this one particular scene
when all kids feel very sad …
*stuttering* When the father dies …
Yes.
Is that enough?
I’m totally bananas!
The volume is, I think, different?
Do I stress differently?
*immitating speech melody*
Ok.
The speech melody is really strange, somehow.
*The flow of words is different*
It‘s worse when you get
to the end of a sentence.
Then it is most obvious
because you swallow the last sounds.
Lucas was the best!
Are we still filming? We are, right?
*stuttering* Ok, how … how did it …
Now I’m doing it even without the app …
How did it feel when you were actually speaking?
Did you notice anything?
That something was wrong? Yes, I noticed that.
Well, I …
I clearly noticed
after doing it for a while.
I felt a bit dizzy.
It was really strange.
Did you forget what you wanted to say?
Because I just did!
I think so!
*laughing* This is the perfect answer, actually!
As you could see
different people
react differently to the
DAF effect.
At the end of this episode
we’ll show you some more drastic examples!
But back to the train compartment.
The two scientists and inventors of the machine
actually suggested
noise reduction
in quiet places such as
train compartments and libraries
as possible field of application.
This would be a great method
because it would obviate the need for physical intervention.
Yeah.
Right.
What do you think about the idea
of closing other people’s mouth with a machine?
Just let us know!
You find links to the app, the scientists and more
in the video description.
I’m Daniel from vetail-x.com.
See you!