The Experts below are selected from a list of 228 Experts worldwide ranked by ideXlab platform
Kazuo Toraichi - One of the best experts on this subject based on the ideXlab platform.
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a design method for compactly supported sampling Function Generator
Pacific Rim Conference on Multimedia, 2002Co-Authors: Koji Nakamura, Kazuo Toraichi, Kazuki Katagishi, Kenji Sayano, Akira Okamoto, Yukio KoyanagiAbstract:This paper proposes the design method of a Function Generator for use in a Digital-to-Analog converter for DVD-Audio. The impulse response of the Function Generator is a compactly supported sampling Function of degree 2 that is expressed in the form of linear combination of quadratic piecewise polynomials Function systems. To generate this impulse response, we design the convolution operator that can generate quadratic piecewise polynomials from the basis rectangular Function. The Function Generator is constructed by combining a set of these convolution operators suitably. We further simplify the design of this Function Generator by making use of a two-scale relation of piecewise polynomials. This Function Generator can be realized in a small scale circuitry.
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IEEE Pacific Rim Conference on Multimedia - A Design Method for Compactly Supported Sampling Function Generator
Advances in Multimedia Information Processing — PCM 2002, 2002Co-Authors: Koji Nakamura, Kazuo Toraichi, Kazuki Katagishi, Kenji Sayano, Akira Okamoto, Yukio KoyanagiAbstract:This paper proposes the design method of a Function Generator for use in a Digital-to-Analog converter for DVD-Audio. The impulse response of the Function Generator is a compactly supported sampling Function of degree 2 that is expressed in the form of linear combination of quadratic piecewise polynomials Function systems. To generate this impulse response, we design the convolution operator that can generate quadratic piecewise polynomials from the basis rectangular Function. The Function Generator is constructed by combining a set of these convolution operators suitably. We further simplify the design of this Function Generator by making use of a two-scale relation of piecewise polynomials. This Function Generator can be realized in a small scale circuitry.
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ICASSP - A quadratic spline Function Generator based on B-spline Functions
International Conference on Acoustics Speech and Signal Processing, 1Co-Authors: M. Kamada, H. Sakai, Kazuo ToraichiAbstract:A Function Generator that converts a discrete time signal to its interpolation by a quadratic spline Function with no phase distortions is described. The Generator synthesizes the output as a linear combination of B-spline Functions generated coherently and continuously. The method reduces the total scale of the circuitry and improves the accuracy in the final output waveform. An implementation of the spline Function Generator is described. >
M. Kamada - One of the best experts on this subject based on the ideXlab platform.
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ICASSP - A quadratic spline Function Generator based on B-spline Functions
International Conference on Acoustics Speech and Signal Processing, 1Co-Authors: M. Kamada, H. Sakai, Kazuo ToraichiAbstract:A Function Generator that converts a discrete time signal to its interpolation by a quadratic spline Function with no phase distortions is described. The Generator synthesizes the output as a linear combination of B-spline Functions generated coherently and continuously. The method reduces the total scale of the circuitry and improves the accuracy in the final output waveform. An implementation of the spline Function Generator is described. >
H. Sakai - One of the best experts on this subject based on the ideXlab platform.
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ICASSP - A quadratic spline Function Generator based on B-spline Functions
International Conference on Acoustics Speech and Signal Processing, 1Co-Authors: M. Kamada, H. Sakai, Kazuo ToraichiAbstract:A Function Generator that converts a discrete time signal to its interpolation by a quadratic spline Function with no phase distortions is described. The Generator synthesizes the output as a linear combination of B-spline Functions generated coherently and continuously. The method reduces the total scale of the circuitry and improves the accuracy in the final output waveform. An implementation of the spline Function Generator is described. >
Mariana Cap - One of the best experts on this subject based on the ideXlab platform.
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Special high voltage Function Generator
PIERS Proceedings, 2011Co-Authors: Petr Marcon, Péter Fiala, Miloslav Steinbauer, Mariana CapAbstract:Goal of this project was to design, realize and test a special high voltage Function Generator. This Generator was designed for special testing of soft tissues. The aim of this project was to generate electric field of defined shape. In course of design of the Generator the properties of the output electrode voltage was the key element. In this article the construction and parameters measuring of the high voltage Function Generator is discussed.
Mahdieye Pourabdollah - One of the best experts on this subject based on the ideXlab platform.
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A new low-power compact 86 db linear range exponential Function Generator and its application in a VGA
Analog Integrated Circuits and Signal Processing, 2019Co-Authors: Mahdieye PourabdollahAbstract:This paper presents a new low-power exponential Function Generator based on the first three terms of a Taylor series. This Generator is used in a VGA which provides approximately 86 db of gain-range for that VGA in general. Power consumption of the exponential Function Generator is about (105–172) µW in maximum and minimum modes of its operation. Comparing with other reported VGAs, the whole VGA + exponential Function Generator + bias circuit dissipates less power which is about (576–650) µW in maximum and minimum modes of its operation. The 86 db gain-range of the VGA spans from – 24 to 62 db. This circuit and another VGA without using the exponential current have been designed in TSMC RF 0.18 μm and the results have been compared. The layout of the circuit has also been carried out in Cadence and demonstrates that the exponential Function Generator and the whole VGA + exponential Function Generator occupy 23 µm × 18 µm (0.0004 $${\text{mil}}^{2}$$ mil 2 ) and 0.0017 $${\text{mil}}^{2}$$ mil 2 of die area respectively. The post-layout-simulation of the circuit was also fulfilled and the results are displayed.
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A new low-power compact 86 db linear range exponential Function Generator and its application in a VGA
Analog Integrated Circuits and Signal Processing, 2018Co-Authors: Mahdieye PourabdollahAbstract:This paper presents a new low-power exponential Function Generator based on the first three terms of a Taylor series. This Generator is used in a VGA which provides approximately 86 db of gain-range for that VGA in general. Power consumption of the exponential Function Generator is about (105–172) µW in maximum and minimum modes of its operation. Comparing with other reported VGAs, the whole VGA + exponential Function Generator + bias circuit dissipates less power which is about (576–650) µW in maximum and minimum modes of its operation. The 86 db gain-range of the VGA spans from – 24 to 62 db. This circuit and another VGA without using the exponential current have been designed in TSMC RF 0.18 μm and the results have been compared. The layout of the circuit has also been carried out in Cadence and demonstrates that the exponential Function Generator and the whole VGA + exponential Function Generator occupy 23 µm × 18 µm (0.0004 \({\text{mil}}^{2}\)) and 0.0017 \({\text{mil}}^{2}\) of die area respectively. The post-layout-simulation of the circuit was also fulfilled and the results are displayed.
