Noise control device

Abstract

A noise control device reduces a noise coming to a plurality of spaces acoustically independent from one another. The noise control device includes: sound output means for outputting a sound into the corresponding space; noise detection means arranged in at least one of the spaces for detecting a noise coming into the space; and signal generation means for generating a cancel signal for canceling the noise according to the noise detected in one of the noise detection means and outputting the generated cancel signal to the plurality of sound output means.

Description

noise control device technical field The present invention relates to a noise control device, and more particularly to a noise control device for reducing noise reaching respectively acoustically independent plural spaces. Background technique In recent years, in response to the increasing demand for comfort in environments with excessive noise such as aircraft passenger cabins, head-mounted receivers that use active noise control technology that actively emits control sounds that are in phase opposite to the noise to reduce noise A telephone device, a so-called noise canceling headset, has been commercialized (for example, Patent Document 1, etc.). Hereinafter, a conventional noise canceling headphone will be described with reference to FIG. 20 . FIG. 20 is a diagram showing the structure of a conventional noise canceling headphone. Also, FIG. 20 is a diagram viewed from above the head of the user 90 . The user 90 shown in FIG. 20 is facing the page and upwards. In ...

AI Technical Summary

Problems solved by technology

As a result, there is a problem that the above-mentioned noise reduction effect cannot be obtained to the extreme.

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