Abstract: An apparatus for underwater pipes comprising an ultrasound emitting system and at least one ultrasound receiving transducer is lowered into he marine environment. During an inspection phase, an ultrasound inspection source of the ultrasound emitting system and the receiving transducer are disposed on each side of the pipe. The inspection source is activated, and an ultrasound signal captured by the receiving transducer is recorded. In response to the observation of an anomaly in the ultrasound signal captured by the receiving transducer, a power source of the ultrasound emitting system is then coupled to the pipe at the aforementioned location, and the power source is activated in order to destroy the obstruction.

Abstract: An apparatus for underwater pipes comprising an ultrasound emitting system and at least one ultrasound receiving transducer is lowered into he marine environment. During an inspection phase, an ultrasound inspection source of the ultrasound emitting system and the receiving transducer are disposed on each side of the pipe. The inspection source is activated, and an ultrasound signal captured by the receiving transducer is recorded. In response to the observation of an anomaly in the ultrasound signal captured by the receiving transducer, a power source of the ultrasound emitting system is then coupled to the pipe at the aforementioned location, and the power source is activated in order to destroy the obstruction.

Abstract: System (2) for counting and analyzing animal impacts on at least one blade (16) of a wind turbine (1) and designed to be mounted in the wind turbine (1), the system comprising: at least one acoustic sensor (21) designed to be arranged inside the blade (16) in order to measure an acoustic wave created by an impact of an animal on the corresponding blade (16) and to emit a raw signal in response to the measurement of the acoustic wave; a signal acquisition module (22) connected to the sensor (21) or to each sensor (21) to acquire the raw signal and to optionally emit a time signal comprising at least one item of information relating to the impact as a function of the acquired raw signal; a module (23) for storing the time signals that is connected to the signal acquisition module (22) in order to store the time signal, the sensor (21) being a microphone designed to measure acoustic waves propagating through the air and at least one is arranged inside the blade (16) at its base.

Abstract: Material for providing acoustic protection against a source of noise, the material comprising a substrate and resonators, wherein said resonators formed on the substrate are constituted by thread-like and/or area-occupying composite elements whose structural characteristics (density, modulus of elasticity, shear modulus, damping factor, piezoelectric factor, etc. ...) and whose shape and/or size are selected to associate a predetermined resonant frequency with each resonator, and also to absorb the sound pressure energy from the noise source at said resonant frequency and dissipate it in the form of mechanical heat energy and/or electrical energy. The invention also relates to apparatus constituted by a wall including at least one layer of the above material.