ï~~CHARACTERIZING MUSICAL TEXTURES David Huron Conrad Grebel College University of Waterloo Waterloo, Canada N2L 3G6 Early music, electroacoustic music, and non-western musics have challenged contemporary music theorists to provide analytic tools which are less genre-specific and more universal in their-scope of applicability. The notion of musical 'texture' is a promising topic for the development of analysis tools since, as with the terms 'timbre' and 'sonority,' the notion of musical texture has an apparent universality which seems to be less true of concepts such as harmony. It is possible to imagine music without harmony, but it is difficult to imagine sounded music which would be devoid of texture. Texture may thus provide a useful probe by which, for example, the organization of electroacoustic works may be directed related to the organization of music of the common practice period, or even to non-western traditions. This paper briefly synopsizes a project whose goal was the derivation of an analytic model for characterizing musical textures. The model was derived through a four-part analytic process. First, a semantic analysis was carried out on the term 'texture' as used in normal musical discourse. Such an analysis can alert us to subtleties and distinctions which can assist in model-building. Second, various textural 'factors' were proposed-- that is, quantifiable characteristics of a musical work which may contribute to the formation of the work's texture. Third, the proposed textural factors were combined and permuted to form all possible models. Each of the derived models was evaluated according to its ability to correctly classify the texture of a number of a priori classified works. Fourth, the models were evaluated with regard to their conceptual elegance- that is, the degree to which a model provides a conceptual framework which helps to explain or clarify what we mean by texture. Semantics of 'Texture' Lexicographers and linguists have shown that concepts can be clarified through detailed examination of the semantic context in which the utterance is made. To this end a sample of English-language[1] writings on music were perused and a body of 109 quotations assembled in which the word 'texture' appears. These quotations were then analysed according to the denotations or connotations entailed. The word 'texture' was found to occur in a wide variety of circumstances and with innumerable shades of meaning. Despite this diversity there appear to be three common meanings characteristic of the term 'texture.' 1. A term referring to the number or volume of simultaneous things happening in a sound field; that is, to the density of concurrent sonic images or sources. 2. A term which refers to the diversity of elements or activities in a sound field; that is, a term which characterizes musical passages on a continuum from homogeneous activity to heterogeneous activity. 3. A generic term for the general sonic activity entailed in a work; a very broad term for what is going on - but a term which always connotes a sonic or 'surface level' grounding in the description. 131
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