  SIREN is a flexible, extensible, and customizable web-based general-purpose
interface for auditory data display (sonification). Designed as a digital audio
workstation for sonification, synthesizers written in JavaScript using the Web
Audio API facilitate intuitive mapping of data to auditory parameters for a
wide range of purposes.
  This paper explores the breadth of sound synthesis techniques supported by
SIREN, and details the structure and definition of a SIREN synthesizer module.
The paper proposes further development that will increase SIREN's utility.
