Types of Spectra

Three Types of Spectra

Pitched Periodic Sounds: Vowels, Trumpets, etc.
These types of sounds give us a strong sense of pitch.

Bells, Gongs, Some Drums. Weak or ambiguous sense of pitch.

Consonants, Some Percussion Instruments,
Attacks of Many Harmonic and Inharmonic Sounds
Sense of high or low, but no clear sense of pitch.

Real sounds are a mixture of sources and different spectral types.