There are many speech recognition books out in the market but here is the list of selected best speech recognition books that I found very useful during my study and research.

Speech Recognition: Theory and C++ Implementation Claudio Becchetti, Prina Ricotti

Fundamentals of Speech Recognition Lawrence Rabiner, Biing-Hwang Juang

Automatic Speech Recognition on Mobile Devices and over Communication Networks (Advances in Pattern Recognition) Zheng-Hua Tan, Børge Lindberg
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