Abstract: To improve accuracy of an evaluation in an acoustic quality evaluation test performed by comparing an evaluation target sound and a reference sound. A data correction apparatus 3 compares, in a call performed between a near-end terminal 1 and a far-end terminal 2, an evaluation target sound in which a voice output from the near-end terminal 1 is recorded and a reference sound in which a voice spoken by a call partner using the far-end terminal 2 to correct test data used in a listening test for evaluating acoustic quality of the call. A correction target determination unit 31 determines, as a correction target section, a voiced section that does not include the voice of the call partner detected from an acoustic signal representing the reference sound. A correction execution unit 32 updates the correction target section of the acoustic signal representing the reference sound with a non-voice signal predetermined.

Abstract: The present invention provides a razor implement which can be satisfactorily used by those who are accustomed to using razor implements, and exhibits an extremely high safety during shaving. The razor implement of the first present invention is a razor implement in which a safety guard 30 having slits exposing the blade edge of a blade by specified intervals and bridges covering the blade edge at a plurality of positions is mounted on the blade fitted at the tip part of a handle, and the slits of the safety guard 30 are constituted by providing the first slits 33 formed at the central part of the blade edge, the second slits 34 formed with smaller widths than the widths of the first slits on the tip side of the blade edge, and the third slits 35 formed with smaller widths than the widths of the first slits on the proximal end part side of the blade edge.

Abstract: An acoustic diaphragm is obtained by forming micro-fibrillated cellulose into a web by a process similar to a paper-making process. The micro-fibrillated cellulose is the cellulose obtained by beating to the Canadian standard freeness of not more than 300 ml, or bacterial cellulose. Since the micro-fibrillated cellulose is poor in wet strength, it is reinforced by a reinforcement element and, in this state, is formed into the web on a wire screen. The reinforcement element may be detached after forming the web, or may be left laminated with the cellulose web so that the resulting composite product is used as the acoustic diaphragm.

Abstract: An air intake system for a marine propulsion engine having a U shaped configuration for facilitating water separation and to provide a long intake passage. An air flow sensor is positioned at the inlet opening of the inlet device with the length between the inlet opening and the intake ports being effective to dampen pulsations in the induction system from the air flow device.

Abstract: A pulse doppler radar system for measuring the range to a target. The radar system alternately transmits a signal having a constant frequency and a signal modulated by a linearly-changing-frequency and receives an echo signal from a target. When a plurality of doppler frequencies derived from jet engine modulation are detected in the echo signal, the radar system is operable to obtain the number of frequency differences giving the same range value on the basis of the differences between the detected doppler frequencies, or to selectively use methods of range calculation according to the number of detected doppler frequencies.