By Yiteng Huang

ISBN-10: 0387276742

ISBN-13: 9780387276748

ISBN-10: 0387276769

ISBN-13: 9780387276762

ISBN-10: 3540376305

ISBN-13: 9783540376309

Telecommunication platforms and human-machine interfaces have began utilizing a number of microphones and loudspeakers to render interplay extra realistic, and extra effective. This increases acoustic sign processing difficulties lower than multiple-input multiple-output (MIMO) eventualities, encompassing far-off speech acquisition, sound resource localization and monitoring, echo and noise keep an eye on, resource separation and speech dereverberation, and so forth. The publication opens with an acoustic MIMO paradigm, developing basics, and linking acoustic MIMO sign processing with classical sign processing and conversation theories. the second one a part of the e-book offers a unique research of acoustic purposes performed within the paradigm to enhance the basics of acoustic MIMO sign processing.

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Extra resources for Acoustic MIMO Signal Processing (2006) (Signals and Communication Technology)

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2 summarizes this very important algorithm. 3 Sign Algorithms Up to now, the only cost function that we have used is the MSE. What makes this criterion so interesting is that an optimal solution (Wiener) can be easily derived as well as very powerful adaptive algorithms. An alternative to the MSE is the mean absolute error (MAE) [141], J a ( h ) = E{\e{k)\} = J5;{|x(/c)-h'^s(/c)|}. 2. The normalized LMS (NLMS) algorithm. 93) where /Xa is the adaptation step of the algorithm. This algorithm is simplified compared to the LMS since the L multiplications in the update equation are replaced by a sign change of the components of the signal vector s{k).

Speed of sound in the air. ^s Sampling period. ^xo, /^x, Reflection coefficients of the walls perpendicular to the x axis, with subscript 0 . referring to the wall adjacent to the coordinate origin and subscript 1 the opposing wall. yj Reflection coefficients of the walls perpendicular to the y axis, with subscript 0 referring to the wall adjacent to the coordinate origin and subscript 1 the opposing wall. Pzo, Ai Reflection coefficients of the floor and ceiling, respectively. As seen from Fig.

Line fitting is then performed with some margin on the both ends. From the slope of the fitting line, we find that the Teo reverberation time is about 395 ms. 6 C h a n n e l Invertibility and M i n i m u m - P h a s e Filter The invertibility of an acoustic channel is of particular interest in many applications such as speech enhancement and dereverberation. A system is said to be invertible if the input to the system can be uniquely determined by processing the output with a stable filter. In other words, there exists a stable inverse filter that exactly compensates the effect of the invertible system.

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Acoustic MIMO Signal Processing (2006) (Signals and Communication Technology) by Yiteng Huang

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