5results about "Variable resistance transducer microphones" patented technology

Microphone device (12) comprising at least one microphone (14) with a receiving diaphragm (16) for detecting ambient sound (24) from the environment of a motor vehicle (10) and with a transducer unit (18) for converting the detected ambient sound (24) into a signal corresponding to the ambient sound (24), wherein the signal is configured to generate an interior sound corresponding to the ambient sound (24) by means of a loudspeaker device for the motor vehicle (10) in an interior of the motor vehicle (10), characterized in that the receiving diaphragm (16) is designed as a motor vehicle component for a mirror, through which an outer surface of the motor vehicle (10) is provided in a predetermined installation state,which the ambient sound (24) excites to a mechanical vibration (26) corresponding to the ambient sound (24) and which transmits the mechanical vibration (26) to a signal generating element (20) of the transducer unit (18) to generate the signal, wherein the receiving membrane (16) is designed as a mirror surface of an external mirror of the motor vehicle (10).

A method and apparatus comprising computer code configured to cause a processor or processors to receive an audio signal obtained from a microphone, input the audio signal into frequency-domain Kalman filter (FDKF), input the audio signal and an output from the FDKF into a neural network, estimate, based on the audio signal and the output from the FDKF, and removing feedback signals from the audio signal by the neural network, and output a version of the audio signal in which a target vocal signal is enhanced by removal of the feedback signals from the audio signal by the neural network.

The present disclosure provides a vibration sensor including a vibration assembly including a mass element and an elastic element, a first acoustic chamber, an acoustic transducer, and a buffer member. In response to an external vibration signal, the vibration assembly vibrates such that a volume of the first acoustic chamber changes. The acoustic transducer is in communication with the first acoustic chamber. In response to a volume change of the first acoustic chamber, the acoustic transducer may generate an electrical signal. The buffer member is connected to the mass element or the elastic element. The buffer member reduces an impact force of the mass element acting on the elastic element during a vibration process of the vibration assembly. The acoustic transducer has a first resonance frequency, the vibration assembly has a second resonance frequency, and the second resonance frequency is less than the first resonance frequency.

A method and apparatus comprising computer code configured to cause a processor or processors to receive an audio signal obtained from a microphone, input the audio signal into frequency-domain Kalman filter (FDKF), input the audio signal and an output from the FDKF into a neural network, estimate, based on the audio signal and the output from the FDKF, and removing feedback signals from the audio signal by the neural network, and output a version of the audio signal in which a target vocal signal is enhanced by removal of the feedback signals from the audio signal by the neural network.