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.
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.
The loudness of the sound brought by a train of waves of given wave-length depends on the extent of the to and fro excursion of the air particles.
How would you define loudness? Add your definition here.