Psychological Characteristics of Sound: (4) Modulation

The Music Telegraph | Text 2020/03/17 [16:46]

Psychological Characteristics of Sound: (4) Modulation

The Music Telegraph| 입력 : 2020/03/17 [16:46]

▲ Phase modulation

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Psychological Characteristics of Sound: (4) Modulation

 

If modulation occurs in a frequency within the audible frequency range, a complex spectrum is generated in that audio signal due to a creation of sideband within the audible frequency band. Modulating frequencies below the audible frequency causes a new form of change in the sound, which is mainly used in the effects of vibrato or tremolo in music. In musical side, modulation affects the tone and location of a sound. In a word, modulation changes structure of sound. With this effect, listeners will have a new psychological response to the modulated sound. This is because the tone and the sense of position of the sound have changed.

 

Modulation in terms of physics is explained by shape, amplitude, and rate, but in human psychology, modulation can be described by tone, location, and vibration. It is the musical effect of modulation that changes the color of a sound and the position of a sound by periodically changing certain characteristics of the sound, causing the listener to create a new psychological echo from the modulation. However, there are still no proper terms for 'tone-modulation' or 'location-modulation' in musical terms.

 

 

 

 

 

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