In connexion with the present subject it is important to notice the three characteristics of a musical sound, namely, pitch, loudness and quality.
The pitch of a musical sound depends on the number of cycles passed through by the fluctuations of the pressure per unit of time; the loudness depends on the amount or the amplitude of the fluctuation in each cycle; the quality depends on the form or the nature of the fluctuation in each cycle.
An increase in the size of the iron disk attached to the membrane augmented both the loudness and the distinctness of the sounds, and this finally led to the adoption of a thin iron disk supported round its edge, acting as both membrane and armature (fig.
Then do= I do dx The Characteristics of Sound Waves Corresponding to Loudness, Pitch and Quality.
- Sounds differ from each other only in the three respects of loudness, pitch and quality.
How would you define loudness? Add your definition here.