From the earliest stages of Greek thought, sound was thought to originate as the result of an impact between two objects. At first it was believed that the swiftness and force of the impact affected both volume and pitch; then it became clear that these were two different parameters. Pitch, in particular, was connected either to quantitative factors, such as the speed of the movement or the number of subsequent impacts, or to qualitative ones, like the idiotes (“peculiarity”) theorized by Theophrastus. The least investigated parameter of sound is timbre, which was usually attributed to the physical characteristics of the source.There is no specific branch of ancient Greek science or physics named akoustike; nevertheless, the Greeks showed a keen interest in sound and its characteristics from the earliest stages of their literature. In the Homeric poems, sound is conceived of as something that possesses magnitude and direction. Such adverbial forms as .