Harmonic Content

The Music Telegraph | Text 2018/12/31 [10:25]

Harmonic Content

The Music Telegraph| 입력 : 2018/12/31 [10:25]

▲ © Georgia State University




Harmonic Content

 

 

Harmonic content:

- Presence of harmonics

 

 

Harmonic structure:

- Which harmonics (odd / even) are present in the tonality

 

 

 

Defines the Families:

1. String: Fundamental + both odd & even (dominant even)

2. Brass (closed pipe): Fundamental + odd only

3. Wind (open pipe): Fundamental + All harmonics (odd & even)

4. Reed: Fundamental + All harmonics (dominant odd)

5. Human voice: Fundamental + All harmonics

 

 

 

Harmonic Wave train (a.k.a “Frequency Response”):

- A plot of the amplitude of the harmonics present

==> Describe the instrument's individual “Personality” within the family

 

 

 

▲ Harmonic structure of Guitar 1 & Guitar 2

© The Music Telegraph



 

 

Masking (2 types):

 

1) Loudness

- If sound #1 is louder than sound #2 then sound #1 masks the sound #2

 

2) Harmonic Masking

- The louder harmonics cover the weaker ones

- Generally, Harmonic Masking reduces tonal density

 

*From the above picture (Harmonic structure of Guitar 1 & Guitar 2)

ex1) Guitar 1 mix with Guitar 2 —> Low frequencies of Guitar 1 mask those of Guitar 2, High frequencies of Guitar 2 mask those of Guitar 1

ex2) Guitar 1 mix with Guitar 2 —> ‘9’ in the harmonic structure will be disappeared (because they compete each other)

 

 

 

*EQ Chart

10 ~ 100 Hz

Power

feeling

100 ~ 400 Hz

Body

 

400 ~ 800 Hz

Warm

 

800 ~ 3k Hz

Attack

 

3k ~ 6k Hz

Presence

 

6k ~ 10k Hz

Bright

Harmonics only (No fundamental)

10k ~ 

Air

Harmonics only (No fundamental)

 

 

 

*Boost: Harmonic boost deliver sound more front

*4-band EQ: Allows 4 band changes in a time 

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