3.2 Flashcards
1
Q
are considered to be longitudinal waves.Thus, when representing this with
a standing wave, instead of the displacement, the air pressure (or how the sound was
generated) determines the amplitude of the wave.
A
Sound waves
2
Q
Determines the amount of energy that has been imparted to the wave which will
be carried or transmitted.
Related to loudness
A
Amplitude
3
Q
- musical sounds with varying frequencies.
- an instrument’s own characteristic vibrational mode or
standing wave pattern - for musical instruments, different harmonic frequencies are related
to each other by simple whole number rations.
A
Harmonics
4
Q
- The most fundamental harmonic for a guitar string is the
harmonic associated with a standing wave having only one
antinode positioned between the two nodes on the end of
the string - Longest Wavelength and Lower Frequency
- Fundamental Harmonics
A
First harmonic
5
Q
- produced by adding one more node between the ends of
the guitar string - The frequency is twice that of the Fundamental Harmonics
- this additional node gives the second harmonic a total of
three nodes and two antinodes
A
Second harmonic
6
Q
- produced by adding two nodes between the ends of the guitar
string. - These additional nodes give the third harmonic a total of four
nodes and three antinodes. - The frequency is thrice that of the Fundamental Harmonies
- For this reason, the length of the string is equal to three-halves
the length of the wave.
A
Third harmonic