Displacement-detecting device for speaker, and audio system
AssigneeAlps Alpine Co., Ltd.
InventorYuki ASAI
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Abstract
A displacement-detecting device for a speaker includes a magnet fixed to a vibration body configured to vibrate by air vibration caused by vibration of a vibration system of the speaker, a sensor provided at a fixed body relative to a fixed system of the speaker, a displacement detector, and a displacement converter. The sensor is configured to detect a magnetic flux vector of the magnet acting on the sensor. The displacement detector is configured to detect a displacement of a vibration system of a passive radiator based on a detection value of the magnetic flux vector by the sensor. The displacement converter is configured to convert the displacement of the vibration system of the passive radiator to a displacement of the vibration system of the speaker.
Claims5
A displacement-detecting device for a speaker, the displacement-detecting device comprising:
- a magnet fixed to a vibration body configured to vibrate by air vibration caused by vibration of a vibration system of the speaker;
- a sensor provided at a fixed body relative to a fixed system of the speaker;
- a displacement detector;
- and
- a displacement converter, wherein
- the sensor is configured to detect a magnetic flux vector of the magnet acting on the sensor,
- the displacement detector is configured to detect a displacement of a vibration system of a passive radiator based on a detection value of the magnetic flux vector by the sensor, and
- the displacement converter is configured to convert the displacement of the vibration system of the passive radiator to a displacement of the vibration system of the speaker in accordance with a relationship between the displacement of the vibration system of the passive radiator and the displacement of the vibration system of the speaker.
A displacement-detecting device for a speaker, the displacement-detecting device comprising:
- a displacement-detecting magnet fixed to a vibration system of a passive radiator, the passive radiator having a fixed system fixed to an enclosure, and the vibration system being vibrated by an air vibration of the speaker having a fixed system, fixed to the enclosure;
- a sensor fixed to the fixed system of the passive radiator;
- a displacement detector;
- and
- a displacement converter, wherein
- the sensor is configured to detect a magnetic flux vector of the displacement-detecting magnet acting on the sensor,
- the displacement detector is configured to detect a displacement of the vibration system of the passive radiator based on a detection value of the magnetic flux vector of the sensor, and
- the displacement converter is configured to convert the displacement of the vibration system of the passive radiator detected by the displacement detector to a displacement of the vibration system of the speaker, in accordance with a relationship between the displacement of the vibration system of the passive radiator and the displacement of the vibration system of the speaker.
Dependencies are inferred from the claim text.