Results 91 to 100 of about 600,184 (313)

Generalized functions and acoustic analogy

International Journal of Aeroacoustics
The aeroacoustic analogy is reviewed. The importance of generalized functions is demonstrated deriving Gauss like theorems in three and two dimensions. It is shown how the Dirac delta function plays an essential part in the theory of fundamental solutions (Green’s function).
openaire   +1 more source

Mode‐Resolved Phonon Dynamics Under Chemical Pressure in SnTe Thermoelectrics

Advanced Science, EarlyView.
Chemical pressure reshapes low‐energy optical phonons in SnTe, altering their dispersion and scattering with heat‐carrying acoustic modes. Positive and negative pressure states modify phonon frequencies and lifetimes in distinct ways, revealing how mode‐selective lattice perturbations regulate acoustic–optical interactions and suppress lattice thermal ...
Zhihao Li, Jianhong Hu, Panpan Peng, Peng Cao, Hui Zhang, Yujie Zong, Yanhui Wu, Hongchao Wang   +7 more
wiley   +1 more source

Theoretical research on the application of impedance calculation in the design of high-intensity low-frequency acoustic generator

Journal of Low Frequency Noise, Vibration and Active Control
The impedance matching is essential in producing high-intensity acoustic waves. This paper studies the impedance calculation methods of modulators and double-chamber Helmholtz resonators based on fluid mechanics, aeroacoustics, and electro-acoustic ...
Baoguo Zhang, Mingrong Dong, Xubin Liang, Min Zhang, Tianqing Zhao, Bin He, Deyu Sun   +6 more
doaj   +1 more source

Resolving Phonon Fock States in a Multimode Cavity with a Double-Slit Qubit

Physical Review X, 2019
We resolve phonon number states in the spectrum of a superconducting qubit coupled to a multimode acoustic cavity. Crucial to this resolution is the sharp frequency dependence in the qubit-phonon interaction engineered by coupling the qubit to surface ...
L. R. Sletten, B. A. Moores, J. J. Viennot, K. W. Lehnert   +3 more
doaj   +1 more source

Doble articulación y ciencias cognitivas de tercera generación: desafiando las nociones tradicionales en torno a la experiencia musical acusmática

Resonancias, 2016
In this article we characterize acousmatic music as a mode of production and as a modality of acoustic representation, based on which we establish a set of conditions that define their practice and particular ethos from a fundamentally pragmatic and ...
Federico Schumacher Ratti, Claudio Fuentes Bravo   +1 more
doaj   +1 more source

Intermountain Acoustic Musician, Volume 8 Number 4, April 1991

, 1991
Salt Lake City, UT: International Bluegrass Association; The Intermountain Acoustic Music Association is a member of the International Bluegrass Music Association and Folk Alliance, the North American folk music and dance alliance. Intermountain Acoustic
Intermountain Acoustic Music Association
core  

Cr1/4NbSe2‐Single Crystal Growth and Evolution of Antiferromagnetic Correlated States

Advanced Science, EarlyView.
High‐quality single crystals Cr1/4NbSe2 were synthesized and comprehensively characterized for the first time. Advanced structural, electronic, and magnetic measurements uncover a correlated antiferromagnetic state, resolving longstanding inconsistencies regarding magnetic behavior derived from earlier polycrystal studies.
Nour Abdelrahman, Bastian Rubrecht, Matheus Felipe de Souza Barbosa, Mahdi Behnami, Dmitriy Efremov, Daniel Wolf, Martin Valldor, Alexey A. Popov, Stanislav M. Avdoshenko, Marco Naumann, Martin Knupfer, Vladislav Kataev, Alexey Alfonsov, Anja U. B. Wolter, Michael Mertig, Bernd Büchner, Silke Hampel   +16 more
wiley   +1 more source

Intermountain Acoustic Musician, Volume 5 Number 10, October 1988

, 1988
Salt Lake City, UT: International Bluegrass Association; The Intermountain Acoustic Music Association is a member of the International Bluegrass Music Association and Folk Alliance, the North American folk music and dance alliance. Intermountain Acoustic
Intermountain Acoustic Music Association
core  

Ferroionic Electrostatic Landscapes Enabling Wireless Energy Harvesting, Storage, and Sensing

Advanced Electronic Materials, EarlyView.
By integrating experiments and electrostatic field simulations, we show that long‐range wireless coupling in Li‐based ferroionics devices emerges from the cooperative interaction between ionic migration and electronic polarization. This coupling sustains self‐polarized electrostatic fields across centimeter‐scale air gaps without external bias or ...
M. Helena Braga, Beatriz M. Gomes, António B. Vale, Beatriz A. Maia, Ilídio B. Costa, Filipa Braz, Jorge C. Ribeiro, João C. Ribeiro   +7 more
wiley   +1 more source

Circuit Theory Analysis of Acoustically Coupled Rooms

Revista Elektrón, 2019
A circuit theory approach is presented for the analysis of acoustically coupled spaces. It is based on energy flow and balance with a similar analogy to the one used for solving dynamic thermal systems, where acoustic power is analog  to electric current
Federico Miyara
doaj