Results 121 to 130 of about 14,802 (299)
Loudspeaker requirements for electronic organs in churches [PDF]
, 1979 J. Robert Ashley, Roy Pritts
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Programmable Reconfiguration of Hybrid 4D Chiral Metamaterials via Mechanical and Thermal Stimuli
Advanced Engineering Materials, EarlyView.A class of hybrid chiral mechanical metamaterials is designed to achieve programmable reconfiguration through soft networks, hinges, and bilayer joints integrated with rigid units. Responsive to mechanical and thermal stimuli, these structures exhibit large volume changes, tunable deformation pathways, and both positive and negative thermal expansion ...
Yunyao Jiang, Siyao Liu, Yaning Li
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Directional properties of the loudspeaker systems with analog and digital crossover networks
Archives of Acoustics, 2008 Directional properties of loudspeaker systems with analog and digital crossover networks have been investigated. The study has been performed for a three-way loudspeaker system subjectively classified as of average quality.
Marek NIEWIAROWICZ, Henryk ŁOPACZ
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New materials for loudspeaker diaphragms and cones—An overview [PDF]
, 1981 Takeo Yamamoto, Tsunehiro Tsukagoshi
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Advanced Engineering Materials, EarlyView.Heat treatment parameters critically affect the wear resistance of powder bed fusion–laser beam (PBF‐LB)‐produced Ti–6Al–2Sn–4Zr–6Mo alloy. This study found that optimizing annealing temperature allows to obtain a tailored microstructure, which enhances the dry‐sliding behavior by forming a stable and functional mechanically mixed layer (MML), ensuring
Gianluca Pirro +5 more
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Advanced Functional Materials, EarlyView.PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu +14 more
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Superdirectional Parametric Array Loudspeaker
Revista Elektrón, 2019 In this work, a directional loudspeaker, also known as a parametric array loudspeaker (PAL), is designed and constructed. The operation is based on the phenomenon called self-demodulation that happens when high-frequency beams interact in a viscous ...
Axel Montes de Oca +3 more
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Loudspeaker‐to‐listener distance: Effect on the phoneme identification scores of normal‐hearing and hearing‐impaired listeners [PDF]
, 1990 Carole E. Johnson
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Advanced Functional Materials, EarlyView.In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund +6 more
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Application of the narmax method to the modelling of the nonlinearity of dynamic loudspeakers
Archives of Acoustics, 2001 The application of the NARMAX method to the modelling of the nonlinearity of dynamic loudspeakers is described. The principle of creating a polynomial representation of a model, the problems stemming from a too large number of model coefficients and the ...
A. B. DOBRUCKI, P. PRUCHNICKI
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