Yuta Hatano

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In spite of being a compact directional sound device, the parametric array loudspeaker (PAL) has often been criticized for its severe nonlinear distortion. In some preliminary studies, the nonlinear distortion is able to be reduced by using the linearization system based on Volterra filter identification, which models the nonlinear sound process of the PAL.(More)
The parametric array loudspeaker (PAL) is well known for its ability to radiate a narrow sound beam from a relatively small ultrasonic emitter. Nonlinear distortions commonly occur in the self-demodulated sound of the PAL. Based on the Volterra filter modeling the self-demodulation process of the PAL, a linearization system can be developed for the PAL.(More)
We have not yet completed the automatic recognition of facial parts by image processing. Even if once we get the edge image for the contour of facial parts, due to the existence of the noise, the results are quite frequently not sufficient both in local and global aspects. This is caused mainly by the lack the top-down mechanism for compensating the(More)
The parametric array loudspeaker PAL modulates the audio signal on an ultrasonic carrier. When the modulated signal is transmitted in air, an audio beam is created based on the nonlinear acoustic principle. Each modulation method has advantages and disadvantages. The frequency modulation FM is favorable for its low cost and high volume, but the tradeoff is(More)
A three-terminal nonequilibrium superconducting device controlled by the tunnel-injection of quasi-particles is fabricated and experimentally investigated. The device used in the present experiments has a sandwich structure consisting of NbN and Pb-alloy films. The dc current gain is measured as a function of the current density of the two junctions and the(More)
10:50-11:00 Network-on-Chip Simulators with QEMU and SystemC Yusuke Fukutsuka M1 Tomiyama Lab. 11:00-11:10 A study of Human detection for tracking persons among multiple cameras Yuta Nakase B4 Yamauchi Lab. 11:10-11:20 Research and development of a precaution system of diseases by biosound Yuri Sumi B4 Fukumizu Lab. 11:20-11:30 Coordinating LED Light with(More)
A linear analytical model of the Josephson DC flip-flop is proposed. The model describes both the Baechtold's and Hebard's flip-flops. The output signal line is treated as either a single inductance or a transmission line with a finite impedance. The former leads to the lumped model, while the latter leads to the distributed model. The lumped model gives(More)
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