Results 41 to 50 of about 1,599,200 (292)

Influence of recording devices and environmental noise on acoustic index scores: Implications for bird sound-based assessments

open access: yesEcological Indicators
Passive acoustic monitoring serves as a minimally invasive and effective method for biodiversity assessment, particularly in bird monitoring through the application of acoustic indices.
Chengyun Zhang   +4 more
doaj   +1 more source

Measurement and Characterization of Acoustic Noise in Water Pipeline Channels

open access: yesIEEE Access, 2019
Measurement and characterization of acoustic noise in water pipeline systems across the 10 Hz to 100 kHz acoustic frequency band are reported in this paper.
Amartansh Dubey   +3 more
doaj   +1 more source

Paving the Way for Next‐Generation Solid‐State Waste Heat Recovery: A Thermomagnetic Materials and Systems Roadmap

open access: yesAdvanced Functional Materials, EarlyView.
Unlocking thermomagnetic low‐grade waste heat recovery. This perspective provides a comprehensive roadmap for the development of thermomagnetic materials and systems. By addressing key engineering challenges across multiple scales, it bridges the gap between micro‐power IoT devices and large‐scale industrial applications. ABSTRACT Nearly half of global
A. Waske   +13 more
wiley   +1 more source

Configuration‐Encoded Cell Alignment by Light‐Gated Silicon Photovoltaic Microcell Arrays

open access: yesAdvanced Functional Materials, EarlyView.
Light‐gated silicon photovoltaic microcells convert pulsed illumination into localized electrical cues. Arranging otherwise similar microcells into four‐lobed, six‐lobed, or circular patterns directs fibroblasts into corresponding local arrangements without wired stimulation.
Yifan Tao   +7 more
wiley   +1 more source

Structural-acoustic coupling and psychophysical effects in the active control of noise in vehicles

open access: yes, 2011
Active noise control systems offer a potential method of reducing the weight of passive acoustic treatment and, therefore, increasing vehicles' fuel efficiency. These can be particularly cost-efficient if integrated with the entertainment system.
Cheer, Jordan   +2 more
core   +1 more source

Experimental Evaluation of Acoustical Materials for Noise Reduction in an Induction Motor Drive

open access: yesMachines
Electric propulsion motors are more efficient than internal combustion engines, but they generate high-frequency tonal noise, which can be perceived as annoying.
Ashish Kumar Sahu   +4 more
doaj   +1 more source

Noise adaptive training for subspace Gaussian mixture models [PDF]

open access: yes, 2013
Noise adaptive training (NAT) is an effective approach to normalise environmental distortions when training a speech recogniser on noise-corrupted speech.
Renals, Steve, Ghoshal, Arnab, Lu, Liang
core  

A Nonlinear Organic Low‐Frequency Sound Sensor Based on Electrochemical Coupling in a Solidified Gel Membrane

open access: yesAdvanced Functional Materials, EarlyView.
A novel nonlinear infrasound sensor concept based on a free‐standing ion conductive gel membrane is introduced. Acoustic signals are directly transduced into an electrical signal using an internal application mechanisms (gating). The nonlinearity might be used for neuromorphic in‐sensor computing. ABSTRACT Measuring low‐frequency or infrasound acoustic
Maarten Mittmann   +6 more
wiley   +1 more source

The effects of physical, biological and anthropogenic noise on the occurrence of dolphins in the Pacific region of the Panama Canal [PDF]

open access: yes, 2014
The main aim of this thesis was to investigate the occurrence of dolphins in Pacific waters adjacent to the Panama Canal in the context of biological, temporal and spatial factors.
Campbell Castillo, Inez
core   +2 more sources

Punch press noise control through partial acoustic enclosure: A Field Study [PDF]

open access: yesSalāmat-i kār-i Īrān, 2022
Introduction: Punch press is contributed as one of the major industrial machines to produce metal objects, which typically propagates hazardous noise. Acoustic enclosure is the most common method to mitigate noise transmitted from industrial equipment ...
ali Safari variani   +4 more
doaj  

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