Canon Kabushiki Kaisha

Hirokazu Negishi

Masao Hosaka

A sound output system has a pair of right and left speakers and a pair of audio mirrors for respectively controlling directivities of sounds which are output from the pair of speakers. The shapes or arrangement of the pair of audio mirrors are adjusted such that a difference between arrival times of the sounds which are respectively output from the pair of speakers can be compensated by a sound pressure difference due to the Haas effect in a predetermined area. Alternative means are phase difference, dipole, and asymmetrical horn loading.

Sound output system

The enclosure comprises inner and outer wall members with a vacuum space therebetween. The space is sealed by an O-ring and a flange of a loudspeaker at the mouth of the enclosure. The enclosure has the form of a vacuum-flask. It reduces unwanted propagation of sound by the enclosure.

Loudspeaker enclosure

An information processing apparatus includes a processor for performing various information processing operations in accordance with an instruction from an operator, a bioinformation sensor for detecting a mental condition of the operator, and an output unit for outputting corresponding information to the operator based on the detected mental condition. The operator is relaxed by the information output from the output unit.

Operator mental condition detector

An audio signal transmission system includes an input section, an output section and a transmission section interposed therebetween. The transmission section analyzes the spectrum of the input audio signal and performs signal processing based on the result of this analysis and in accordance with the physical response characteristic of the output section.

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Epsom, United Kingdom

Hirokazu Negishi