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Chapter 6: Conclusions and Future Directions

In Chapter 6 we address the general questions of the last section, and then make some suggestions for future research; in particular, we mention some partial results that could not be easily fit into the main chapter development, namely the application of circuit methods to time-varying systems in **§6.2.7** (and an application to time-varying vocal tract modeling is indicated), and a possible foundation for a theory of the boundary termination of passive distributed networks in **§6.2.3**.

Stefan Bilbao
2002-01-22