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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 3Production and Classification of Speech Sounds

3.1 Introduction

A simplified view of speech production is given in Figure 3.1, where the speech organs are divided into three main groups: the lungs, larynx, and vocal tract. The lungs act as a power supply and provide airflow to the larynx stage of the speech production mechanism. The larynx modulates airflow from the lungs and provides either a periodic puff-like or a noisy airflow source to the third organ group, the vocal tract. The vocal tract consists of oral, nasal, and pharynx cavities, giving the modulated airflow its “color” by spectrally shaping the source. Sound sources can also be generated by constrictions and boundaries, not shown in Figure 3.1, that are made within the ...

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