This paper proposes an initialization for an agglomerative system applied to speaker diarization in the meeting environment. The initialization is based on a previous clustering of the temporal sequence generated by the estimation of the Time Delay of Arrival (TDOA) among pair of sensors. That initial clustering has the purpose of obtaining initial classes with speaker information from a sole s...

Time delay of arrival (TDOA) estimation between signals input to two or more microphones plays an important role in speaker localization. Most methods employ a linear array of two or more microphones and use the generalized cross correlation method or eigenspace analysis (AEDA) methods. TDOA estimation with linear arrays, however, is highly sensitive to estimation errors when the signals arrive...

Speaker diarization for recordings made in meetings consists of identifying the number of participants in each meeting and creating a list of speech time intervals for each participant. In recently published work [7] we presented some experiments using only TDOA values (Time Delay Of Arrival for different channels) applied to this task. We demonstrated that information in those values can be us...

We present a new distortion measure for compression in systems that share data in order to locate RF signal emitters and discuss its optimal use. These results are relevant in wireless location systems, electronic warfare systems, and sensor networks. The optimal bit allocation with respect to this distortion measure is accomplished through use of a genetic algorithm with a penalty function. We...

This paper addresses the source location problem by using time-difference-of-arrival (TDOA) measurements. The two-stage weighted least squares (TWLS) algorithm has been widely used in TDOA location. However, estimation accuracy of is poor and bias significant when measurement noise large. Owing to nonlinear nature system model, we reformulate localization as a constrained derive theoretical est...

We consider a sensor network, which in the presence of a rogue sensor, is tasked with estimating emitter location under the time difference of arrival (TDOA) method. The rogue seeks to maximally degrade estimation accuracy by injecting a single false report of sensor position. Our closed form solution gives a set of false positions that minimize the network’s Fisher Information Matrix (FIM). We...

This paper made analysis of present situation and development trend of the positioning in small range at first and then made summary about the technologies and algorithms of the positioning in small range. According to the above content, wireless location technology has broad application prospects, especially the applications related to the location in small range. This new wireless positioning...

The aim of this work is the evaluation of sate-of-the-art self-calibration algorithms for synchronized distributed microphone arrays. Here, self-calibration refers to the task of estimating microphone positions assuming unsynchronized source signals emitted from unknown locations. To simplify the whole procedure, it is assumed that the positions of the microphones and of the sources are station...

Multistream diarization is an effective way to improve the diarization performance, MFCC and Time Delay Of Arrivals (TDOA) being the most commonly used features. This paper extends our previous work on information bottleneck diarization aiming to include large number of features besides MFCC and TDOA while keeping computational costs low. At first HMM/GMM and IB systems are compared in case of ...

This article designs and implements a 3D moving target positioning tracking system by using ultrawideband (UWB) technology. The result of the two-way ranging time difference arrival (TWR-TDOA) algorithm is adopted to in new resolution that resolve hyperbolic equations. proposed applied outdoor indoor scenarios. To minimize effect sensor layout, this proposes simplified multi-population genetic ...