Emergence of Purposive Auditory Behavior as Testified by Vertebrate Evolution and Human History
In order to demonstrate manifestations of systematic changes in vocalization I could have chosen phonatory phenomena more familiar than the kölning, such as common prosodic patterns or less extreme singing qualities. The main reason for choosing the kölning--indeed, an extreme form of vocalization--is that I wanted to work with a technique which does not result from sophisticated cultural traditions and that allows an optimal number of inputs and applications to the model I proposed in chapter 3 and the beginning of chapter 4. In this chapter I will qualify my choice and develop a hypothesis on the origin and function of the kölning and related vocalization styles, based on parameters of a paleontological and otherwise evolutionary nature.
To "köla" means to communicate with the herd over distances amounting to hundreds of meters or even a few kilometers by means of calls: wordless acoustical signals structured according to a basic model, with specific sub-features primarily concerned with pitch and intensity. These specific sub-features are produced and supported by an extremely high setting of the larynx that so deviates from current phonatory qualities and styles that it appears