Transcript Box Guitar

Musical Instrument
Project
By: Amy F.
Box Guitar
• How is the instrument activated (how
do you play it)?
You strum the strings with your fingers,
and the strings will vibrate.
What is it that vibrates?
• The force you use when you strum the string, is
what makes the strings vibrate. The strings
themselves make hardly any noise. They are thin
and slip easily through the air without making
much of noise. An acoustic guitar would be
much quieter without the vibrations of its bridge
and body. In an acoustic guitar, the vibration of
the string is transferred through the bridge and
saddle to the top plate body of the guitar.
How do you manipulate (change)
the pitch of your instrument?
Why did this change the pitch?
• There are six different strings on a
guitar. They go from high to low and
thicker to thinner. The looser and
thicker the strings the lower the sound,
the thinner and tighter the string the
higher the sound.
How do you manipulate (change)
the volume of your instrument?
Why did this change the
volume?
• The volume can be changed by
strumming the strings with more or
less force. The less force you use the
softer the sound. The more force you
use the louder the sound.
Sound waves
•
Original
• High- The pitch is high and the volume is
louder, the wavelength are closer together
and the amplitude gets taller.
• Low- The pitch is low and the volume is
softer the wavelengths are farther apart
this is called rarefaction and the amplitude
is smaller.
Drum Pitch and Frequency
•
The higher the pitch the closer
frequency of the sound waves
are, the lower the pitch the
farther apart the frequency of
the sound waves are.
Original
High
Low
Communication
• People make sound waves in their
everyday life all the time. A high pitch
noise normally means they are happy,
excited, or for a warning for example
a siren. A low pitch noise with a loud
volume usually means someone is
angry.
Citations
• My notes
• http://www.phys.unsw.edu.au/music/g
uitar/guitarintro.html
• A “How A Guitar Works” book