As a theoretical tool it can be used to learn about percussion, compare similarities and differences between sounds, and explore correlations between sound and source. An ontology of sorts, PAL offers an approach to describing the ‘state’ of virtually any percussion instrument producing a specific sound at a moment in time, from multiple perspectives simultaneously. However, none exist that exclusively address drums and percussion in the form that is proposed with PAL. Taxonomies, ontologies and folksonomies of semantic descriptors for musical instruments, music recordings, music samples and sound effects exist in various domains including the Semantic Web, online databases and stand-alone software applications. The challenge of providing semantically rich information about recorded sounds – and the sources that produce them – has inspired a number of approaches and schemes seeking to address the issue. Developing a means of effectively describing the diversity of percussion is the primary goal of this research, and thus the Percussive Audio Lexicon (PAL) is proposed. Compared with other musical instruments, percussion is unparalleled in its diversity, and the palette of sonic and timbral possibilities is vast.
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