Flexible event scheduling for data-flow audio processing

ABSTRACT

Real-time audio and music processing frequently requires actions to be taken relative to a number of different control rates such as audio sample rate or sensor inputs. These processing systems frequently use schedulers to manage this complexity. The design of a flexible scheduling system must avoid limiting the types of actions or the range of control rates available. Abstracting time and events from the underlying scheduler provides a high degree of flexibility for designers of processing networks. Marsyas[4] is an open source software framework for analysis, retrieval, and synthesis of audio signals with specific emphasis to Music Information Retrieval applications. The Marsyas scheduler uses these abstractions to provide a highly extensible scheduler.

REFERENCES

• 1: Bray, S. and G. Tzanetakis (2005). Implicit patching for dataflow-based audio analysis and synthesis. In Proc. Int. Computer Music Conf. (ICMC).
• 2: Burroughs, N. and A. Parkin and G. Tzanetakis (2006). Flexible Scheduling for Dataflow Audio Processing. In Proc. Int. Computer Music Conf. (ICMC).
• 3: Roger Dannenberg, Real-time scheduling and computer accompaniment, Current directions in computer music research, MIT Press, Cambridge, MA, 1989
• 4: Tzanetakis, G (2006). Marsyas (Music Analysis, Retrieval and Synthesis for Audio Signals) - http://marsyas.sourceforge.net/

INDEX TERMS

Primary Classification:
  H. Information Systems
  H.5 INFORMATION INTERFACES AND PRESENTATION (I.7)
      H.5.5 Sound and Music Computing
          Subjects: Signal analysis, synthesis, and processing

General Terms:
Design, Languages

Keywords:
audio processing, scheduling