HEADPHONE

To achieve both of high-performance noise canceling and high sound quality.SOLUTION: A headphone 100 comprises: a driver unit 12 for reproducing sound from an electric signal; a housing 10 to which the driver unit 12 is attached; a noise canceling circuit 42 for attenuating noise sound by adding ant...

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Bibliographische Detailangaben
1. Verfasser:	DOBASHI MASARU
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS PUBLIC ADDRESS SYSTEMS
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Beschreibung
Zusammenfassung:	To achieve both of high-performance noise canceling and high sound quality.SOLUTION: A headphone 100 comprises: a driver unit 12 for reproducing sound from an electric signal; a housing 10 to which the driver unit 12 is attached; a noise canceling circuit 42 for attenuating noise sound by adding antiphase sound to the noise sound; a resonance frequency change section for changing a resonance frequency of a Helmholtz resonator constituted by including a cavity and a tubular cavity communicating with the cavity in the housing 10; and a switch 58 for allowing a change of a resonance frequency and switching of the noise canceling circuit 42 to be performed by linkage.SELECTED DRAWING: Figure 3 【課題】高性能なノイズキャンセリング及び高音質の両立が目的になる。【解決手段】ヘッドホン１００は、電気信号から音を再生するためのドライバーユニット１２と、ドライバーユニット１２が取り付けられたハウジング１０と、ノイズ音に逆位相音を加算することによってノイズ音を減衰させるノイズキャンセリング回路４２と、ハウジング１０内の空洞及び空洞に連通する管状空洞を含んで構成されるヘルムホルツ共鳴器の共振周波数を変更する共振周波数変更部と、共振周波数の変更及びノイズキャンセリング回路４２の切り替えを連動して行うためのスイッチ５８と、を有する。【選択図】図３