Results 261 to 270 of about 463,585 (289)

Acoustic diffraction analysis by the impulse response method: A line impulse response approach

The Journal of the Acoustical Society of America, 1984
Acoustic diffraction of plane impulsive waves is considered for free-field, baffled, and pressure release boundary conditions, in the case of an arbitrary spatial distribution of combined, amplitude-time delay modulation in an aperture. The method is based on the impulse response analysis of parallel aperture lines, the line impulse responses being ...
H. Lasota, R. Salamon, B. Delannoy
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Some spatial analysis of the room impulse response

Journal of the Acoustical Society of America, 2015
The room impulse response (RIR) and measures derived from it have been a powerful tool for room characterization. Traditionally, these measures are based on time domain characteristics like reverberation time or clarity. By recoding a group of RIRs with microphone arrays, one can add the spatial dimension to the RIR.
Jens Meyer, Gary W. Elko
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Self-similar analysis of the room impulse response

The Journal of the Acoustical Society of America, 2006
Important information of the room acoustic characteristics is contained in the room impulse response. We analyze the time-space correlation of the impulse response by the self-similarity method. The room impulse response is divided into the frame of the length of the fixed time. Attractors are composed by affine transformation of each frame.
Yong Tang, Hideo Shibayam, Wakako Tanaka, Tooru Itakura   +3 more
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Economic Effect and Impulse Response Analysis of the Real Estate Industry

Korea Real Estate Institute, 2023
This study examines the effect of the real estate industry on other industries as input and output resources. We define the real estate industry based on the two- and three-digit industry classification system as the recent real estate industry expands into other interdisciplinary business sectors.
Chang Ha Jin, Jin Ho Seo
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Analysis of the impulse response of a piezoelectric photoacoustic signal

Journal of Applied Physics, 1988
Impulse responses of the piezoelectric photoacoustic (PA) signal have been measured by using the technique of cross correlation. Experimental impulse responses of aluminum model samples are in good agreement with theoretical prediction. It is shown that thermal diffusivities of opaque materials can be determined by measured zero-crossing times of PA ...
M. Hangyo, S. Nakashima, Y. Oohara, S. Kimura   +3 more
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Time–Frequency Analysis of the Impulse Response

IEEE Transactions on Signal Processing, 2019
The impulse response is a key function for the analysis and design of systems, therefore understanding its properties is a fundamental problem. To investigate the nonstationary structure of the impulse response, we derive its time–frequency representation both in the Wigner and smoothed Wigner distribution domains.
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Subpicosecond coherent analysis of the impulse response of optical fibers

Journal of Optics, 1981
Deals with a new optical technique which analyses the amplitude transfer function of optical frequencies passing through fibers and modulus and phase of the associated time impulse response. The dispersion of a short monomode fiber was measured around lambda =5900 AA with 0.03 ps time resolution.
J Piasecki, B Colombeau, M Vampouille, C Froehly   +3 more
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Impulse-response analysis of the market share attraction model [PDF]

, 1999
We propose a simulation-based technique to calculate impulse-response functions and their confidence intervals in a market share attraction model [MCI]. As an MCI model implies a reduced form model for the logs of relative market shares, simulation techniques have to be used to obtain the impulse-responses for the levels of the market shares.
Fok, Dennis, Franses, Philip Hans
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Wavelet-Based Sensitivity Analysis of the Impulse Response Function for Damage Detection

Journal of Applied Mechanics, 2006
This paper discusses the extraction of the wavelet-based impulse response function from the acceleration response using the discrete wavelet transform (DWT). The analytical formulation of the sensitivity of the DWT coefficient of the impulse response function with respect to a system parameter is then presented for structural damage detection.
Law, S. S., Li, X. Y.
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The Sinc Interpolation in the Impulse Response Function Analysis

[Proceedings] IGARSS '92 International Geoscience and Remote Sensing Symposium, 2005
sin(x) The - (sinc) interpolation is commonly used in resampling SAR data centered around a point target to obtain the interpolated impulse response function to be analyzed. Detected SAR data are output from correlation processor in either amplitude or intensity format.
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