2. adevice created or adapted for the
purpose of making musical sounds
A musical instrument that produces
sound by means of vibrating strings.
Also called chordophones.
6. Created by a vibrating object.
Vibrating object = source of disturbance
that moves through the medium.
Examples of medium: vocal chords,
vibrating guitar strings
the particles of the medium through
which the sound moves is vibrating in a
back and forth motion at a given
frequency
7. the number of waves that
pass a fixed point in unit time.
“how often” the air particles
vibrate.
Measured as the number of
complete back-and-forth of a
particle of the medium per unit of
time.
8. Factors that determine frequency (plain
steel string)
tension
length
mass per unit length of the string
Formula:
9. Longer string = lower frequency
Frequency is inversely proportional to the
length of the string
Change in length of string = different
frequency
Shorter strings = higher frequency =
higher pitch
11. Tension – how tightly the string is
stretched
Tighter string = higher tension = higher
frequency
Loosening string = lower tension =
lower frequency
12. The relationship between tension and
frequency is determined by how fast the
wave moves on the string.
Thin strings vibrate faster and have
higher frequencies than thick ones.
Higher frequency = higher pitch
Loosening the string gives it a higher
frequency while tightening the string
gives it lower frequency.