Journal ArticleDOI
A combined hardware-software approach for acoustic sensor network synchronization
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TLDR
An approach for synchronizing a wireless acoustic sensor network using a two-stage procedure employing a Kalman filter with a dedicated observation error model and a gossiping algorithm which estimates the average clock frequency and phase of the sensor nodes.About:
This article is published in Signal Processing.The article was published on 2015-02-01. It has received 27 citations till now. The article focuses on the topics: Clock synchronization & Master clock.read more
Citations
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Journal ArticleDOI
A Consolidated Perspective on Multimicrophone Speech Enhancement and Source Separation
TL;DR: This paper proposes to analyze a large number of established and recent techniques according to four transverse axes: 1) the acoustic impulse response model, 2) the spatial filter design criterion, 3) the parameter estimation algorithm, and 4) optional postfiltering.
Journal ArticleDOI
Blind Synchronization in Wireless Acoustic Sensor Networks
Dani Cherkassky,Sharon Gannot +1 more
TL;DR: The challenge of blindly resynchronizing the data acquisition processes in a wireless acoustic sensor network (WASN) is addressed and the recursive band-limited interpolation (RBI) algorithm for recursive SRO estimation is proposed.
Journal ArticleDOI
Blind Sampling Rate Offset Estimation for Wireless Acoustic Sensor Networks Through Weighted Least-Squares Coherence Drift Estimation
TL;DR: This paper proposes a new approach to blind SRO estimation for an asynchronous wireless acoustic sensor network, which exploits the phase drift of the coherence between the asynchronous microphones signals and uses the use of the least-squares coherence drift (LCD), which is effective even for short signal segments.
Journal ArticleDOI
Audio fingerprinting for multi-device self-localization
TL;DR: A robust audio fingerprinting algorithm for noisy recordings is proposed and landmark matching is performed to construct a histogram of the TDOAs of multiple sources to estimate the extreme time difference of arrivals from the sources and derive the geometrical configuration of the network.
Proceedings ArticleDOI
Multi-stage coherence drift based sampling rate synchronization for acoustic beamforming
TL;DR: This contribution extends the recently proposed coherence drift based method in two important directions, and compares MVDR and maximum-SNR beamformers in reverberant environments and shows that both benefit from a novel phase normalization, which is proposed in this contribution.
References
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Journal ArticleDOI
Wireless sensor networks: a survey
TL;DR: The concept of sensor networks which has been made viable by the convergence of micro-electro-mechanical systems technology, wireless communications and digital electronics is described.
Journal ArticleDOI
The generalized correlation method for estimation of time delay
TL;DR: In this paper, a maximum likelihood estimator is developed for determining time delay between signals received at two spatially separated sensors in the presence of uncorrelated noise, where the role of the prefilters is to accentuate the signal passed to the correlator at frequencies for which the signal-to-noise (S/N) ratio is highest and suppress the noise power.
Journal ArticleDOI
Randomized gossip algorithms
TL;DR: This work analyzes the averaging problem under the gossip constraint for an arbitrary network graph, and finds that the averaging time of a gossip algorithm depends on the second largest eigenvalue of a doubly stochastic matrix characterizing the algorithm.
Journal ArticleDOI
Editorial: wireless sensor networks
TL;DR: The state-of-the-art protocol for WSN protocol stack is explored for transport, routing, data link and physical layers, and the open research issues are discussed for each of the protocol layers.
Standard for a Precision Clock Synchronization Protocol for Networked Measurement and Control Systems
Kang B. Lee,J Eldson +1 more
TL;DR: A protocol is provided in this standard that enables precise synchronization of clocks in measurement and control systems implemented with technologies such as network communication, local computing, and distributed objects.
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