Results 21 to 30 of about 59,513 (239)

Instability waves in a subsonic round jet detected using a near-field phased microphone array [PDF]

open access: yes, 2006
We propose a diagnostic technique to detect instability waves in a subsonic round jet using a phased microphone array. The detection algorithm is analogous to the beam-forming technique, which is typically used with a far-field microphone array to ...
Colonius, Tim, Suzuki, Takao
core   +2 more sources

Multiresolution Speech Enhancement Based on Proposed Circular Nested Microphone Array in Combination with Sub-Band Affine Projection Algorithm

open access: yesApplied Sciences, 2020
Speech enhancement is one of the most important fields in audio and speech signal processing. The speech enhancement methods are divided into the single and multi-channel algorithms.
Ali Dehghan Firoozabadi   +7 more
doaj   +1 more source

Ad Hoc Microphone Array Calibration: Euclidean Distance Matrix Completion Algorithm and Theoretical Guarantees [PDF]

open access: yes, 2014
This paper addresses the problem of ad hoc microphone array calibration where only partial information about the distances between microphones is available.
Asaei, Afsaneh   +4 more
core   +2 more sources

Acoustic source localization using the open spherical microphone array in the low-frequency range [PDF]

open access: yesMATEC Web of Conferences, 2019
Recently, spherical microphone arrays (SMA) have become increasingly significant for source localization and identification in three dimension due to its spherical symmetry.
Yang Boquan, Shi Shengguo, Yang Desen
doaj   +1 more source

A Feasibility Study for a Hand-Held Acoustic Imaging Camera

open access: yesApplied Sciences, 2023
Acoustic imaging systems construct spatial maps of sound sources and have potential in various applications, but large, cumbersome form factors limit their adoption.
Danilo Greco
doaj   +1 more source

Exploiting partial reconfiguration through PCIe for a microphone array network emulator [PDF]

open access: yes, 2018
The current Microelectromechanical Systems (MEMS) technology enables the deployment of relatively low-cost wireless sensor networks composed of MEMS microphone arrays for accurate sound source localization.
Braeken, An   +3 more
core   +2 more sources

Least squares DOA estimation with an informed phase unwrapping and full bandwidth robustness [PDF]

open access: yes, 2020
The weighted least-squares (WLS) direction-of-arrival estimator that minimizes an error based on interchannel phase differences is both computationally simple and flexible.
Bohlender, Alexander   +3 more
core   +1 more source

On the effect of SNR and superdirective beamforming in speaker diarisation in meetings [PDF]

open access: yes, 2012
This paper examines the effect of sensor performance on speaker diarisation in meetings and investigates the use of more advanced beamforming techniques, beyond the typically employed delay-sum beamformer, for mitigating the effects of poorer sensor ...
Lincoln, M., Renals, S., Zwyssig, E.
core   +2 more sources

A Planer Moving Microphone Array for Sound Source Localization

open access: yesApplied Sciences
Sound source localization (SSL) equips service robots with the ability to perceive sound similarly to humans, which is particularly valuable in complex, dark indoor environments where vision-based systems may not work. From a data collection perspective,
Chuyang Wang, Karhang Chu, Yatsze Choy
doaj   +1 more source

Design exploration and performance strategies towards power-efficient FPGA-based achitectures for sound source localization [PDF]

open access: yes, 2019
Many applications rely on MEMS microphone arrays for locating sound sources prior to their execution. Those applications not only are executed under real-time constraints but also are often embedded on low-power devices.
Braeken, An   +4 more
core   +1 more source

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