STANDING WAVE DETECTION APPARATUS AND METHOD OF CONTROLLING THE SAME
First Claim
1. A standing-wave detection apparatus for detecting a standing wave in a predetermined space, comprising:
- a sound-receiving unit adapted to receive a sound generated from a sound source arranged in the predetermined space;
a storage unit adapted to store time series sound pressure level data acquired by said sound-receiving unit during movement along a path in the predetermined space;
an adjustment unit adapted to adjust the time series sound pressure level data stored in said storage unit, based on an adjustment curve determined using a lower envelope of the time series sound pressure level data stored in said storage unit; and
a detection unit adapted to detect an existence position of a standing wave in the predetermined space based on the adjusted time series sound pressure level data.
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Abstract
To efficiently detect a standing wave generated in a room, a standing-wave detection apparatus for detecting a standing wave in a predetermined space, comprises: a sound-receiving unit adapted to receive a sound generated from a sound source arranged in the predetermined space; a storage unit adapted to store time series sound pressure level data acquired by the sound-receiving unit during movement along a path in the predetermined space; an adjustment unit adapted to adjust the time series sound pressure level data stored in the storage unit, based on an adjustment curve determined using a lower envelope of the time series sound pressure level data stored in the storage unit; and a detection unit adapted to detect an existence position of a standing wave in the predetermined space based on the adjusted time series sound pressure level data.
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Citations
10 Claims
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1. A standing-wave detection apparatus for detecting a standing wave in a predetermined space, comprising:
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a sound-receiving unit adapted to receive a sound generated from a sound source arranged in the predetermined space; a storage unit adapted to store time series sound pressure level data acquired by said sound-receiving unit during movement along a path in the predetermined space; an adjustment unit adapted to adjust the time series sound pressure level data stored in said storage unit, based on an adjustment curve determined using a lower envelope of the time series sound pressure level data stored in said storage unit; and a detection unit adapted to detect an existence position of a standing wave in the predetermined space based on the adjusted time series sound pressure level data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of controlling a standing-wave detection apparatus for detecting a standing wave in a predetermined space, comprising the steps of:
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receiving, from a sound-receiving unit, a sound generated from a sound source arranged in the predetermined space; storing, in a storage unit, time series sound pressure level data acquired in the step of receiving the sound during movement along a path in the predetermined space; adjusting the time series sound pressure level data stored in the storage unit, based on an adjustment curve determined using a lower envelope of the time series sound pressure level data stored in the storage unit; and detecting an existence position of a standing wave in the predetermined space based on the adjusted time series sound pressure level data.
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Specification