linear prediction analysis
61Source-filter model of speech production — The source filter model of speech production models speech as a combination of a sound source, such as the vocal cords, and a filter, the vocal tract (and radiation characteristic).While only an approximation, the model is widely used in a number …
62Bandwidth expansion — is a technique for widening the bandwidth or the resonances in an LPC filter. This is done by moving all the poles towards the origin by a constant factor gamma. The bandwidth expanded filter A (z) can be easily derived from the original filter… …
63Line spectral pairs — (LSP) or Line Spectral Frequencies (LSF) are used to represent Linear Prediction Coefficients (LPC) for transmission over a channel. LSPs have several properties (e.g. smaller sensitivity to quantisation noise) that make them superior to direct… …
64Vocoder — Der Vocoder (Zusammenfügung aus dem engl. voice und encoder) ist ein elektronisches Gerät, das aus der militärischen Forschung stammt und für die Telefontechnik entwickelt wurde, um natürliche Sprache in kodierter Form mittels elektrischer… …
65Cepstre — Le cepstre (prononcé [kɛpstr]) d un signal x(t) est une transformation de ce signal du domaine temporel vers un autre domaine analogue au domaine temporel. Pour rappeler le fait que l on effectue une transformation inverse à partir du domaine… …
66Constant k filter — Linear analog electronic filters Network synthesis filters Butterworth filter Chebyshev filter Elliptic (Cauer) filter Bessel filter Gaussian filter Optimum L (Legendre) filter Linkwitz Riley filter …
67Kalman filter — Roles of the variables in the Kalman filter. (Larger image here) In statistics, the Kalman filter is a mathematical method named after Rudolf E. Kálmán. Its purpose is to use measurements observed over time, containing noise (random variations)… …
68probability theory — Math., Statistics. the theory of analyzing and making statements concerning the probability of the occurrence of uncertain events. Cf. probability (def. 4). [1830 40] * * * Branch of mathematics that deals with analysis of random events.… …
69Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… …
70Optimal design — This article is about the topic in the design of experiments. For the topic in optimal control theory, see shape optimization. Gustav Elfving developed the optimal design of experiments, and so minimized surveyors need for theodolite measurements …
