Single Channel Phase-Aware Signal Processing in Speech Communication

Chapter 7Conclusion and Future Outlook

Pejman Mowlaee

Graz University of Technology, Graz, Austria

7.1 Chapter Organization

In this chapter, we present several future directions with potential significant breakthroughs in the young field of phase-aware signal processing. A brief review of the renaissance of phase-aware processing with its decline in the past and the renewed interest in recent years is provided. We point out the series of relevant events involving phase-aware signal processing which reflect the renewed interest of researchers in the field of speech communication and eventually motivated the writing of this book. A range of applications where phase processing may successfully be incorporated in the future is presented. In particular, we describe potential applications within two categories: (i) connected research disciplines and the possible extension of the techniques and concepts learned in this book for single-channel phase-aware processing to multi-channel or other speech processing applications not fully covered here; and (ii) neighboring signal processing domains that involve signals other than speech (e.g., image, video, and biomedical signals) which could benefit from the phase-aware speech processing knowledge learned from this book.

7.2 Renaissance of Phase-Aware Signal Processing: Decline and Rise

It took researchers almost a century to start reinvestigating the misconception about the belief that the human ear is phase-deaf¹ and to pose questions ...