| 摘要 |
<p>This invention relates to an optical audio microphone arrangement comprising at least a sensor (1) arranged to be movable in response to sound waves and a Michelson type interferometer for measuring the displacement of the sensor (1), which comprises a reflecting surface. The interferometer comprises at least a light source (2), a reference mirror (5), a beam splitter (7) and at least two detectors (8, 9). This invention relates further to a method for measuring sound waves.
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