DIGITAL ELECTROACOUSTIC TRANSDUCER

To provide a digital electroacoustic transducer equipped with an NC system in which the phase difference between a cancellation signal and the reverse phase of noise is suppressed.SOLUTION: A digital electroacoustic transducer 1 according to the present invention includes a signal processing circuit...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: TSUIHIJI KENZO, EGUCHI TOYOKAZU
Format: Patent
Sprache:eng ; jpn
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:To provide a digital electroacoustic transducer equipped with an NC system in which the phase difference between a cancellation signal and the reverse phase of noise is suppressed.SOLUTION: A digital electroacoustic transducer 1 according to the present invention includes a signal processing circuit 151 that generates a digitally-processed signal on the basis of a digital signal from a sound source, a first voice coil 161 to which a digital processing signal is applied, microphones 141 and 142 that pick up noise and generate a noise signal, a noise cancel circuit 152 that generates a cancellation signal on the basis of the noise signal, a second voice coil 162 to which the cancellation signal is applied, and a diaphragm 163 to which the first voice coil and the second voice coil are attached.SELECTED DRAWING: Figure 4 【課題】キャンセル信号と、ノイズの逆相と、の間の位相差を抑制したNCシステムを備えたデジタル式電気音響変換装置を提供する。【解決手段】本発明にかかるデジタル式電気音響変換装置1は、音源からのデジタル信号に基づいて、デジタル処理信号を生成する信号処理回路151と、デジタル処理信号が印加される第1ボイスコイル161と、ノイズを収音してノイズ信号を生成するマイクロホン141,142と、ノイズ信号に基づいて、キャンセル信号を生成するノイズキャンセル回路152と、キャンセル信号が印加される第2ボイスコイル162と、第1ボイスコイルと、第2ボイスコイルと、が取り付けられる振動板163と、を有してなる、ことを特徴とする。【選択図】図4