Results 21 to 30 of about 35,202 (339)
Study of Standing-Wave Thermoacoustic Electricity Generators for Low-Power Applications
Applied Sciences, 2018 This paper is concerned with the study of low-cost, low-power thermoacoustic electricity generators. Based on target electrical output power values of 50 and 100 W, three standing wave prototypes (of both one-stage and two-stage prototypes) integrating a
Antonio Piccolo
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IEEE Transactions on Magnetics, 2007 We note the drawbacks of classical loudspeaker motors: the inductance varies with the coil's position, there is a reluctant effect and Eddy currents appear because of the iron in the motor. We then present ironless structures of loudspeaker motors to eliminate these drawbacks.
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Electrostatic graphene loudspeaker [PDF]
Applied Physics Letters, 2013 Graphene has extremely low mass density and high mechanical strength, and key qualities for efficient wide-frequency-response electrostatic audio speaker design. Low mass ensures good high frequency response, while high strength allows for relatively large free-standing diaphragms necessary for effective low frequency response.
Qin Zhou, Alex Zettl
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Nihon Kikai Gakkai ronbunshu, 2015 We herein propose a new model-based control method, in place of traditional adaptive control, for a low-frequency noise problem in a closed space. The proposed control method is based on state feedback control and a model of the acoustic space obtained ...
Shotaro HISANO +3 more
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Three-dimensional wave-domain acoustic contrast control using a circular loudspeaker array.
Journal of the Acoustical Society of America, 2019 This paper proposes a three-dimensional wave-domain acoustic contrast control method to reproduce a multizone sound field using a circular loudspeaker array.
Zerui Han, Ming Wu, Qiaoxi Zhu, Jun Yang
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On the Frequency Response of Nanostructured Thermoacoustic Loudspeakers
Nanomaterials, 2018 In this work, we investigate the thermal and acoustic frequency responses of nanostructured thermoacoustic loudspeakers. An opposite frequency dependence of thermal and acoustic responses was found independently of the device substrate (Kapton and glass)
Paolo La Torraca +6 more
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Time-Domain Sound Field Reproduction with Pressure and Particle Velocity Jointly Controlled
Applied Sciences, 2021 Particle velocity has been introduced to improve the performance of spatial sound field reproduction systems with an irregular loudspeaker array setup. However, existing systems have only been developed in the frequency domain. In this work, we propose a
Xuanqi Hu +3 more
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Applied Sciences, 2018 Alternative low-cost sources (e.g., balloons, gun fires) are used for impulse response measurements when a dodecahedron speaker is not available. This study sets to explore the applicability of a method utilizing a common directional loudspeaker as a ...
N. Papadakis, G. Stavroulakis
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Frontiers in Digital Health, 2021 The distortion-product otoacoustic emission (DPOAE) is a backward propagating wave generated inside the cochlea during the wave amplification process. The DPOAE signal can be detected rapidly under relatively noisy conditions.
Wei-Chen Hsiao +2 more
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Acta Acustica, 2020 Introduction: Surrounding spherical loudspeaker arrays facilitate the application of various spatial audio reproduction methods and can be used for a broad range of acoustic measurements and perceptual evaluations.
Pausch Florian +2 more
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