公开(公告)号：US09557211B2

公开(公告)日：2017-01-31

申请号：US14604224

申请日：2015-01-23

申请人： Airbus Operations (S.A.S.)

发明人： Philippe Bousquet ,  Osmin Delverdier ,  Stefan Moal

IPC分类号： G01H3/10 ,  G01H3/00 ,  B64F5/00 ,  H04R1/08

CPC分类号： G01H3/10 ,  B64F5/60 ,  G01H3/00 ,  H04R1/08 ,  H04R2499/13

摘要： An acoustic measurement device in an air flow and subjected to a noise source, the device including: a base having a surface in contact with the air flow, a first microphone which is mounted flush with the surface, a second and a third microphone which are mounted on either side of the first microphone, each, at the bottom of a cavity opening onto the surface, and where each of the second and third microphones is covered with a noise-reducing element, the second and the third microphones being assembled at a distance from the first microphone that is greater than the correlation length of the turbulent phenomenon in the frequency band studied, and a computer or processor provided for computing the power spectrum of the noise source from the signals detected by the three microphones.

摘要翻译： 一种气流中的声学测量装置，并经受噪声源，该装置包括：具有与空气流接触的表面的基座，与表面齐平安装的第一麦克风，第二和第三麦克风， 安装在第一麦克风的任一侧上，每个在位于表面上的空腔的底部，并且其中每个第二和第三麦克风被减噪元件覆盖，第二和第三麦克风被组装在 距离第一麦克风的距离大于研究的频带中的湍流现象的相关长度;以及计算机或处理器，用于根据由三个麦克风检测的信号计算噪声源的功率谱。