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A novel parametric technique for the calibration of electroacoustic transducers
1993 IEEE Instrumentation and Measurement Technology Conference, 2002An identification approach is introduced for the parametric calibration of electroacoustic transducers. The method is based on the conventional substitution technique for hydrophone calibration and a parametric estimation technique for a linear system. The calibration is carried out in three main steps: (1) measurement of the combined transfer function
Zhou, D. +2 more
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A recursive technique for rendering parametric curves
Computers & Graphics, 1990Abstract A method is developed for recursively drawing parametric curves. The advantage of this method is that it avoids the problem of having to choose the subdivision of the parametric interval.
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Preprocessing techniques for parametric loudspeakers
2008 International Conference on Audio, Language and Image Processing, 2008Non-linear interaction of ultrasound waves can be applied to reproduce audible sound with parametric loudspeaker. This can be explained with the self- demodulation property of finite amplitude ultrasonic waves. A special characteristic of the reproduced sound waves using parametric loudspeaker is its high directivity.
null Ee-Leng Tan +2 more
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A parametric technique for estimation of delay and Doppler
ICASSP '83. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005A parametric model is developed for signals received from a moving source. An estimation technique for the delay, Doppler and spectral parameters based on minimizing the error between the sample spectral density function and the spectral model is presented.
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Canopy surface technique for parametric blending
The Visual Computer, 1992A method based on canopy surfaces is presented for blending parametric surfaces. The blend designed using this method gives freedom to the designer in selecting i) the primitive surfaces to be blended, ii) the contact curves lying on them (in which the blend meets the primitives), iii) the endtangent directions along the contact curves (which are used ...
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Parametric Nonlinear Optical Techniques in Microscopy
2003A small revolution is taking place in microscopy. Nonlinear optical spectroscopic techniques — which in bulk applications have been around almost since the invention of the laser in the sixties — are rapidly being incorporated within high resolution microscopy.
Müller, M., Brakenhoff, G.J.
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Observations on the application and development of parametric-programming techniques
Computer-Aided Design, 1992Abstract A parametric program may use rules and algorithms to define the relationships between dimensions and elements of designs, and it may thus generate variants of a design. Programs currently in use have technical limitations in their ability to handle time-varying and imprecise data, the search for suitable existing designs and their ...
McMahon, CA +3 more
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The effects of motion on parametric fMRI analysis techniques
Physiological Measurement, 1999Subject motion during the time course of functional activation studies has been shown to cause spurious signals which can mimic 'true' activation. Therefore, the importance of motion correction has been widely recognized. Correction with post-processing using image registration software is common practice in functional imaging and analysis.
N A, Thacker +3 more
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A technique to linearize the discrete-time parametric amplifier
Microelectronics Journal, 2015This paper presents a linearization technique to reduce harmonic distortion in a discrete-time parametric amplifier (DTPA). The technique may be applied to other variants of the DTPA, such as the complementary discrete-time parametric amplifier (CDTPA), the reverse discrete-time parametric amplifier (RDTPA), and the double-complementary discrete-time ...
Hitesh Shrimali, Shouri Chatterjee
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Improved techniques for ray tracing parametric surfaces
The Visual Computer, 1990Several techniques for acceleration of ray tracing parametric surfaces are presented. Some of these are entirely new to ray tracing, while others are improvements of previously known techniques. First a uniform spatial subdivision scheme is adapted to parametric surfaces. A new space- and time-efficient algorithm for finding raysurface intersections is
Dani Lischinski, Jakob Gonczarowski
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