Haton
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Management Dynamics
Here's an in-depth, step-by-step analysis defining the critical ingredients essential to achieving ongoing improvement and a robust bottom line! Focusing on practical, dynamic solutions for weaknesses in the interdependent parts of an organization, Management Dynamics provides a comprehensive introduction to the Theory of Constraints (TOC) in profit-oriented organizations, complete with the crucial but oft-missing pieces of the constraint theory–a fully integrated and supporting accounting system and the dynamic motivator to drive ongoing improvement in the bottom line. Order your copy today!
Hydraulicians in Europe 1800-2000
More than 850 individuals partly forgotten by name, but sometimes found in historical writings, together with many well known or recently deceased persons are presented in terms of bio-data, short career highlights, and main advances made to the profession with a short biography of the main writings. If available, a portrait is also included.
Pitch Determination of Speech Signals
Author: W. Hess
language: en
Publisher: Springer Science & Business Media
Release Date: 2012-12-06
Pitch (i.e., fundamental frequency FO and fundamental period TO) occupies a key position in the acoustic speech signal. The prosodic information of an utterance is predominantly determined by this parameter. The ear is more sensitive to changes of fundamental frequency than to changes of other speech signal parameters by an order of magnitude. The quality of vocoded speech is essentially influenced by the quality and faultlessness of the pitch measure ment. Hence the importance of this parameter necessitates using good and reliable measurement methods. At first glance the task looks simple: one just has to detect the funda mental frequency or period of a quasi-periodic signal. For a number of reasons, however, the task of pitch determination has to be counted among the most difficult problems in speech analysis. 1) In principle, speech is a nonstationary process; the momentary position of the vocal tract may change abruptly at any time. This leads to drastic variations in the temporal structure of the signal, even between subsequent pitch periods, and assuming a quasi-periodic signal is often far from realistic. 2) Due to the flexibility of the human vocal tract and the wide variety of voices, there exist a multitude of possible temporal structures. Narrow-band formants at low harmonics (especially at the second or third harmonic) are an additional source of difficulty. 3) For an arbitrary speech signal uttered by an unknown speaker, the fundamental frequency can vary over a range of almost four octaves (50 to 800 Hz).