Results 51 to 60 of about 59,513 (239)

Comparative analysis and selection of the geometry of the microphone array based on MEMS microphones for sound localisation

Радіоелектронні і комп'ютерні системи
The subject of this article is the design and optimization of the geometric configuration of omnidirectional MEMS microphone arrays for sound localization tasks. The goal is to determine the most effective array architecture and beamforming algorithms to
Andrii Riabko, Tetiana Vakaliuk, Oksana Zaika, Roman Kukharchuk, Yuriy Smorzhevsky   +4 more
doaj   +1 more source

Three-dimensional microphone arrays [PDF]

The Journal of the Acoustical Society of America, 1987
Low-cost, high-quality microphones and integrated electronics prompt examination of sophisticated arrays for sound pick-up in large enclosures. A three-dimensional, uniform configuration of receivers is studied and shown to have several benefits. Beamforming and delay steering can be accomplished over the 4π solid angle without spatial ambiguity ...
openaire   +1 more source

TreeSpider: In‐Canopy Exploration With Tether‐Based Aerial Modular Arms

Advanced Robotics Research, EarlyView.
A tethered drone with perching arms and a 360° ring enables unprecedented maneuverability within dense forest canopies. By dynamically adjusting tether length and decoupling pitch from the frame, it navigates between branches, senses multiple trees, and interacts physically with foliage.
Luca Romanello, Tian Lan, Salaheldin Hassan, Maximilian Leutschafft, Erdem Ekinci, Sophie F. Armanini, Mirko Kovac, Basaran Bahadir Kocer   +7 more
wiley   +1 more source

A Supramolecular Ferroelectric With Two Sublattices and Polarization Dependent Conductivity

Advanced Science, EarlyView.
Ferroelectric behavior in a supramolecular material with two, independently switchable, sublattices is demonstrated. The sublattices can be associated with the two dipolar groups in the compound. Moreover, the polarization is found to couple to the charge transport in the material, giving rise to a switchable, directional conductivity.
H. Mager, M. Litterst, Sophia Klubertz, Shyamkumar V. Haridas, Oleksandr Shyshov, M. von Delius, M. Kemerink   +6 more
wiley   +1 more source

A Wearable Microphone Array Helmet for Automotive Applications

Applied Sciences
Growing interest in microphone array technology has been observed in the automotive industry and in this work, specifically, for Active Noise Control (ANC) systems.
Daniel Pinardi, Andrea Toscani, Marco Binelli, Angelo Farina, Jong-Suh Park   +4 more
doaj   +1 more source

Localization of mechanical and electrical defects in dry-type transformers using an optimized acoustic imaging approach.

PLoS ONE, 2023
This paper presents an acoustic imaging localization system designed to pinpoint common defects in dry-type transformers by analyzing the unique sounds they produce during operation.
Zhanxi Zhang, Youyuan Wang, Zhihe Li, Jinzhan Liu   +3 more
doaj   +1 more source

Tunable Sound Absorption via Evanescent‐Wave Coupling in Asymmetric Bilayer Metasurfaces

Advanced Science, EarlyView.
Tunable sound absorption is realized through a bilayer metasurface system governed by evanescent‐wave coupling. This work demonstrates that such evanescent‐wave coupling provides a controllable scattering channel that destructively interferes with the specular reflection.
Pyung Sik Ma, Hyung Jin Lee
wiley   +1 more source

Multi-Channel Sub-Band Speech Recognition

EURASIP Journal on Advances in Signal Processing, 2001
Two distinct fields of research into robust speech recognition are the use of microphone arrays for signal enhancement and the use of independent frequency sub-band models for robust recognition.
McCowan Iain A, Sridharan Sridha
doaj   +1 more source

An online algorithm for echo cancellation, dereverberation and noise reduction based on a Kalman-EM Method

EURASIP Journal on Audio, Speech, and Music Processing, 2021
Many modern smart devices are equipped with a microphone array and a loudspeaker (or are able to connect to one). Acoustic echo cancellation algorithms, specifically their multi-microphone variants, are essential components in such devices.
Nili Cohen, Gershon Hazan, Boaz Schwartz, Sharon Gannot   +3 more
doaj   +1 more source

Dynamic Shifts in ER–Plasma Membrane Junctions Signaling Define Pro‐Metastatic N‐Glycosylation and Predict Prostate Cancer Progression

Advanced Science, EarlyView.
Prostate cancer remains a leading cause of male cancer death, yet screening cannot reliably identify aggressive disease, underscoring the need for tissue biomarkers. It is shown that primary tumors increase ER–plasma membrane junction signaling via STIM1/ORP5, whereas metastasis features their loss, Golgi dispersal, and rapid conversion of high‐mannose
Amanda J. Macke, Tania Kamal, Taylor E. Divita, Artem N. Pachikov, Chad A. LaGrange, Rajesh Ravichandran, Martha Morton, Robert Powers, Haowen Qiu, Jean‐Jack M. Riethoven, Colm Morrissey, Melinda Wojtkiewicz, Rebekah L. Gundry, Carol A. Casey, Armen Petrosyan   +14 more
wiley   +1 more source