Methods, systems, and apparatus, including computer programs encoded on computer-storage media, for self-calibrating ultrasonic removal of sea lice. In some implementations, a method includes generating, by transducers distributed in a sea lice treatment station, a first set of ultrasonic signals, detecting a second set of ultrasonic signals in response to propagation of the first set of ultrasonic signals through water, determining propagation parameters of the sea lice treatment station based on the second set of ultrasonic signals that were detected, obtaining an image of a sea louse on a fish in the sea lice treatment station, determining, from the image, a location of the sea louse in the sea lice treatment station, and generating a third set of ultrasonic signals that focuses energy at the sea louse.

Methods, systems, and apparatus, including computer programs encoded on computer-storage media, for self-calibrating ultrasonic removal of sea lice. In some implementations, a method includes generating, by transducers distributed in a sea lice treatment station, a first set of ultrasonic signals, detecting a second set of ultrasonic signals in response to propagation of the first set of ultrasonic signals through water, determining propagation parameters of the sea lice treatment station based on the second set of ultrasonic signals that were detected, obtaining an image of a sea louse on a fish in the sea lice treatment station, determining, from the image, a location of the sea louse in the sea lice treatment station, and generating a third set of ultrasonic signals that focuses energy at the sea louse.

Methods, systems, and apparatus, including computer programs encoded on computer-storage media, for self-calibrating ultrasonic removal of sea lice. In some implementations, a method includes generating, by transducers distributed in a sea lice treatment station, a first set of ultrasonic signals, detecting a second set of ultrasonic signals in response to propagation of the first set of ultrasonic signals through water, determining propagation parameters of the sea lice treatment station based on the second set of ultrasonic signals that were detected, obtaining an image of a sea louse on a fish in the sea lice treatment station, determining, from the image, a location of the sea louse in the sea lice treatment station, and generating a third set of ultrasonic signals that focuses energy at the sea louse.

Methods, systems, and apparatus, including computer programs encoded on computer-storage media, for self-calibrating ultrasonic removal of sea lice. In some implementations, a method includes generating, by transducers distributed in a sea lice treatment station, a first set of ultrasonic signals, detecting a second set of ultrasonic signals in response to propagation of the first set of ultrasonic signals through water, determining propagation parameters of the sea lice treatment station based on the second set of ultrasonic signals that were detected, obtaining an image of a sea louse on a fish in the sea lice treatment station, determining, from the image, a location of the sea louse in the sea lice treatment station, and generating a third set of ultrasonic signals that focuses energy at the sea louse.

The present invention relates to an apparatus and method for nonlinear parametric manipulation of a biological object, e.g. small animals, such as birds and rodents, based on the use of nonlinear parametric effects of auditory organs, whereby the influence on the biological object is caused by two acoustic signals with different carrier frequencies, the carrier frequency of the first acoustic signal is fixed, the carrier frequency of the second acoustic signal is wobbling, the first and the second carrier frequency are in the range of the maximum sensitivity of the auditory pathway of the objects, the difference between these frequencies is in the range of the infra-threshold resonance frequencies of the biological object, a parametrically synchronized effect with a pulsed, modulated, optical, incoherent field in the visible wave range is also exerted on the biological objects, and whereby the duration of the pulses as well as the frequency of their repetition are similar to the parameters of pulsed acoustic fields.

The present invention relates to an apparatus and method for nonlinear parametric manipulation of a biological object, e.g. small animals, such as birds and rodents, based on the use of nonlinear parametric effects of auditory organs, whereby the influence on the biological object is caused by two acoustic signals with different carrier frequencies, the carrier frequency of the first acoustic signal is fixed, the carrier frequency of the second acoustic signal is wobbling, the first and the second carrier frequency are in the range of the maximum sensitivity of the auditory pathway of the objects, the difference between these frequencies is in the range of the infra-threshold resonance frequencies of the biological object, a parametrically synchronized effect with a pulsed, modulated, optical, incoherent field in the visible wave range is also exerted on the biological objects, and whereby the duration of the pulses as well as the frequency of their repetition are similar to the parameters of pulsed acoustic fields.

In-vehicle transducers (speakers, sound exciters, or vibrating window panels) are used to generate the ultrasonic waves to repel pests, without driving away family pets or exposing nearby people. In one preferred method, a pest deterrent mode is activated in response to a first user command by emitting ultrasonic soundwaves from a transducer driven by an onboard audio system. A region around the vehicle is monitored for human-related activity within the region. The emission of ultrasonic soundwaves is deactivated when the human-related activity is detected. Emission of the ultrasonic soundwaves is resumed when the human-related activity is no longer detected. Then the pest deterrent may be set to a deactivated mode in response to a second user command.

In-vehicle transducers (speakers, sound exciters, or vibrating window panels) are used to generate the ultrasonic waves to repel pests, without driving away family pets or exposing nearby people. In one preferred method, a pest deterrent mode is activated in response to a first user command by emitting ultrasonic soundwaves from a transducer driven by an onboard audio system. A region around the vehicle is monitored for human-related activity within the region. The emission of ultrasonic soundwaves is deactivated when the human-related activity is detected. Emission of the ultrasonic soundwaves is resumed when the human-related activity is no longer detected. Then the pest deterrent may be set to a deactivated mode in response to a second user command.

Methods and devices for repelling mosquitoes may operate by generating the beats of fore and hind pairs of dragonfly wings, which may be dragonfly wing beats in the form of pressure waves. Such beats may be generated using digital or analog circuitry. The digital beats may be recordings of synthesized or enhanced beats of dragonfly wings beating. The device may take the form of a button that may be worn or otherwise carried by a user.

Methods, systems, and apparatus, including computer programs encoded on computer-storage media, for self-calibrating ultrasonic removal of sea lice. In some implementations, a method includes generating, by transducers distributed in a sea lice treatment station, a first set of ultrasonic signals, detecting a second set of ultrasonic signals in response to propagation of the first set of ultrasonic signals through water, determining propagation parameters of the sea lice treatment station based on the second set of ultrasonic signals that were detected, obtaining an image of a sea louse on a fish in the sea lice treatment station, determining, from the image, a location of the sea louse in the sea lice treatment station, and generating a third set of ultrasonic signals that focuses energy at the sea louse.