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Discrete-Time Speech Signal Processing: Principles and Practice by Thomas F. Quatieri - Massachusetts Institute of Technology Lincoln Laboratory

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Chapter 8Filter-Bank Analysis/Synthesis

8.1 Introduction

In the previous chapter, we introduced the filter bank summation (FBS) and overlap-add (OLA) methods of speech analysis and synthesis. In this chapter, we focus on extensions of the FBS method, in particular, beginning in Section 8.2 with its additional properties and practical design considerations. In Section 8.3 we interpret the filter-bank outputs in the FBS method for speech signals. Specifically, a sinewave model of the filter-bank outputs is developed for quasi-periodic speech signals, a perspective that leads to the phase vocoder for speech analysis and synthesis. Although we provide interpretation of the filter-bank outputs with respect to speech signals, the approach remains ...

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