Results 251 to 260 of about 1,472,223 (308)

On the Design of Target Beampatterns for Differential Microphone Arrays

IEEE/ACM Transactions on Audio Speech and Language Processing, 2019
Differential microphone arrays (DMAs) have many interesting properties and have been widely used in acoustic, audio, and speech applications. A critical part of a DMA is the differential beamformer, which is generally designed in two important steps: 1 ...
Chao Pan, Jingdong Chen, J. Benesty, Guangming Shi   +3 more
semanticscholar   +1 more source

Passive Joint Localization and Synchronization of Distributed Microphone Arrays

IEEE Signal Processing Letters, 2019
Collaborative processing of signals recorded by distributed sensors brings about new opportunities as well as challenges to classical array signal processing.
Szymon Woźniak, K. Kowalczyk
semanticscholar   +1 more source

Co-prime Circular Microphone Arrays and Their Application to Direction of Arrival Estimation of Speech Sources

IEEE International Conference on Acoustics, Speech, and Signal Processing, 2019
This paper proposes the co-prime circular microphone array (CPCMA), which applies co-prime array theory to circular microphone arrays. Compared with a conventional uniform circular array (UCA) with the same number of microphones and radius, the CPCMA ...
Jiahong Zhao, C. Ritz
semanticscholar   +1 more source

The Hitachi/JHU CHiME-5 system: Advances in speech recognition for everyday home environments using multiple microphone arrays

5th International Workshop on Speech Processing in Everyday Environments (CHiME 2018), 2018
This paper presents Hitachi and JHU’s efforts on developing CHiME-5 system to recognize dinner party speeches recorded by multiple microphone arrays. We newly developed (1) the way to apply multiple data augmentation methods, (2) residual bidirectional ...
Naoyuki Kanda, Rintaro Ikeshita, Shota Horiguchi, Yusuke Fujita, Kenji Nagamatsu, Xiaofei Wang, Vimal Manohar, Nelson Yalta, Matthew Maciejewski, Szu-Jui Chen, A. Subramanian, Ruizhi Li, Zhiqi Wang, Jason Naradowsky, Leibny Paola García-Perera, Gregory Sell   +15 more
semanticscholar   +1 more source

On the Design of Flexible Kronecker Product Beamformers with Linear Microphone Arrays

IEEE International Conference on Acoustics, Speech, and Signal Processing, 2019
This paper proposes a method for the design of flexible Kronecker product beamformers based on the decomposition of the steering vector of a physical array as a Kronecker product of steering vectors of two smaller virtual arrays. With this decomposition,
Wenxing Yang, Gongping Huang, J. Benesty, I. Cohen, Jingdong Chen   +4 more
semanticscholar   +1 more source

Superdirective Microphone Arrays

2001
This chapter gives an overview of so-called superdirective beamformers, which can be derived by applying the minimum variance distortionless response (MVDR) principle to theoretically well-defined noise fields, as for example the diffuse noise field. We show that all relevant performance measures for beamformer designs are functions of the coherence ...
Joerg Bitzer, K. Uwe Simmer
openaire   +1 more source

Microphone position and gain calibration for a large-aperture microphone array

IEEE Transactions on Speech and Audio Processing, 2005
Large-aperture microphone arrays have the potential for providing quality speech acquisition from multiple talkers over a large focal area for such applications as teleconferencing and speech-recognition input. The cost of computing is rapidly approaching the point at which these arrays will be practical in many common environments.
Joshua M. Sachar, Harvey F. Silverman, William R. Patterson III   +2 more
openaire   +1 more source

Teleconference microphone arrays

The Journal of the Acoustical Society of America, 1982
A directional array of acoustic transducers is disclosed. The acoustic transducers are arranged colinearly and in pairs symmetrically about a center line of the directional array. The distances of the acoustic transducers on either side of the center line of the array are neither linear nor monotonic.
openaire   +1 more source

Design of Robust Differential Microphone Arrays

IEEE/ACM Transactions on Audio, Speech, and Language Processing, 2014
Differential microphone arrays (DMAs), due to their small size and enhanced directivity, are quite promising in speech enhancement applications. However, it is well known that differential beamformers have the drawback of white noise amplification, which is a major issue in the processing of wideband signals such as speech.
Liheng Zhao, Jacob Benesty, Jingdong Chen   +2 more
openaire   +1 more source

Calibration of a Microphone Array Based on a Probabilistic Model of Microphone Positions

2020
This paper addresses a novel method for calibrating microphone positions included in a microphone array. The performance of microphone array processing deteriorates due to two factors: (1) differences between predetermined position and actual positions of the microphones. (2) sound source signal overlaps in frequency and time.
Katsuhiro Dan, Katsutoshi Itoyama, Kenji Nishida, Kazuhiro Nakadai   +3 more
openaire   +1 more source