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US 8,509,034 B2Granted
Hydrophone and hydrophone assembly for performing stereophonic underwater sound recordings
OwnerTimo Klingeinventor
Life of this patent
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Abstract
A hydrophone for recording underwater sound includes a housing having an outer surface designed to serve as a boundary surface for an incident sound wave and at least one vibration sensor having a sensor surface for recording sound waves and for preparing a sensor signal. The sensor surface of the vibration sensor is in an opening of the housing. A hydrophone assembly includes a plurality of the hydrophones.
Claims16
A hydrophone for detecting underwater sound, comprising:
- a housing having a spherical shape and an outer surface serving as a bounding surface for an impinging sound wave and defining an opening, wherein the bounding surface is suitably shaped for obtaining a directivity of the impinging sound wave, the housing having a diameter providing a lower cut-off frequency for the directivity in an audible frequency range from approximately 50 Hz to approximately 16 kHz;
- and
- at least one vibration sensor having a sensor area for receiving sound waves and operable to provide a sensor signal, the sensor area:
- being in the opening of the housing such that it closes the opening of the housing in a flush manner;
- and
- having a hemispherical attachment that is comprised of a damping material operable to reduce flow noise.
3 more elements
A hydrophone assembly, comprising:
- a plurality of hydrophones for detecting underwater sound, each hydrophone comprising:
- a housing having a spherical shape and an outer surface serving as a bounding surface for an impinging sound wave and defining an opening, wherein the bounding surface is suitably shaped for obtaining a directivity of the impinging sound wave, the housing having a diameter providing a lower cut-off frequency for the directivity in an audible frequency range from approximately 50 Hz to approximately 16 kHz;
- and
- at least one vibration sensor having a sensor area for receiving sound waves and operable to provide a sensor signal, the sensor area:
- being in the opening of the housing such that it closes the opening of the housing in a flush manner;
- and
- having a hemispherical attachment that is comprised of a damping material operable to reduce flow noise.
4 more elements
A method for operating hydrophones for stereophonic underwater sound recordings in an audible frequency range, which comprises:
- placing at least two hydrophones for detecting underwater sound in water, each of the at least two hydrophones comprising:
- a housing having a spherical shape and an outer surface serving as a bounding surface for an impinging sound wave and defining an opening, wherein the bounding surface is suitably shaped for obtaining a directivity of the impinging sound wave, the housing having a diameter providing a lower cut-off frequency for the directivity in an audible frequency range from approximately 50 Hz to approximately 16 kHz;
- and
- at least one vibration sensor having a sensor area for receiving sound waves and operable to provide a sensor signal, the sensor area:
- being in the opening of the housing such that it closes the opening of the housing in a flush manner;
- and
- having a hemispherical attachment that is comprised of a damping material operable to reduce flow noise;
- and
- carrying out underwater stereophonic sound recordings in an audible frequency range with the at least two hydrophones.
6 more elements
Dependencies are inferred from the claim text.