6 results about "Condenser microphone" patented technology

A pickup 10 for a sound-producing body according to one embodiment of the present disclosure comprises: a non-directional condenser microphone 11; and a chamber 12 formed in front of the non-directional condenser microphone 11. A part of the chamber 12 is defined by an elastic body 13 that has a first opening 13a penetrating along the inward-outward direction of the chamber 12. The pickup further comprises a weight body 14 layered on the elastic body 13 in a manner closing the first opening 13a.

The application relates to the field of shield model testing and monitoring, and particularly discloses a slurry balance shield model testing device, which comprises a soil bin, a counterforce frame fixed to one side of the soil bin, a moving cabin capable of reciprocating sliding between the soil bin and the counterforce frame, and a multi-source sensor system. The moving cabin comprises a slurry cabin and an air cushion cabin which are independent of each other. A cutter head is arranged at the front end of the slurry cabin. A centrifugal pump is connected in series to a slurry inlet pipeline and a slurry discharge pipeline of the slurry cabin. The multi-source sensor system comprises a torque sensor connected to the cutter head, a pressure sensor connected to the slurry cabin, a pump body acceleration sensor connected to the centrifugal pump, and a condenser microphone arranged in the soil bin and facing a tunneling face. The device can simulate the coupling process of shield tunneling and slurry circulation under laboratory conditions in a high simulation mode, and can realize the synchronous and real-time collection of key multi-source physical parameters of cabin pressure, cutter head load, pumping vibration and tunneling face acoustic signals, thereby providing technical support for in-depth research on the evolution mechanism of complex working conditions such as slurry balance shield lagging.

The utility model discloses an outdoor noise monitoring sensor relates to noise monitoring sensor technical field. This outdoor noise monitoring sensor, including support sleeve, terminal, connecting wire, terminal and connecting wire electric connection, the inside of support sleeve is provided with sensor mainboard and condenser microphone, sensor mainboard and connecting wire electric connection, the outer wall of support sleeve is close to the top and is provided with the sound hole, the sound hole is in the outside of support sleeve and is distributed in the circular array, the outside of support sleeve is sleeved with T type mounting disc, the outer wall of T type mounting disc is provided with screw hole, the inner wall screw thread connection of screw hole has fastening bolt. The utility model discloses through multiple structure cooperation, avoids the erosion of wind and rain, dust to internal condenser microphone, sensor mainboard, guarantees the stable collection of sound wave signal again, has improved the monitoring precision and equipment durability under the outdoor complex environment significantly.

This application provides a sound perception and localization method for humanoid robots, relating to the field of robotics. It constructs a basic three-dimensional sampling array by scientifically arranging four microphones, employing high-precision omnidirectional condenser microphones to achieve distortion-free acquisition of environmental sound signals. Simultaneously, it outputs raw sound signal data, precise sound pressure amplitude data, and related identification information. The raw sound signal is preprocessed using A-weighted sound levels that conform to human hearing characteristics, while filtering out DC components and high-frequency interference noise to output a human-like sound signal. Then, based on the theory of pulsating spherical source radiation sound field and a point source approximation model, combined with the human-like sound pressure data acquired by the microphone array and preset coordinates, the three-dimensional spatial coordinates of the sound source are accurately calculated. Multiple sound source coordinate results are obtained through multi-microphone array combination calculations, thereby achieving accurate judgment and high-precision localization of the environmental sound source and its location.

This application relates to the field of audio equipment technology and discloses a condenser microphone, including a power conversion module comprising a power supply module and a voltage regulator module. The output terminal of the power supply module is connected to the input terminal of the voltage regulator module. The power conversion module is used for preliminary processing of input power supply voltage conversion and adaptation. A gain enhancement module is also included, with the output terminal of the voltage regulator module connected to its input terminal. A high-impedance signal pre-adjustment module has its input terminal connected to the output terminal of the gain enhancement module. An OTL power module has its input terminal connected to the output terminal of the high-impedance signal pre-adjustment module, and its output terminal is connected to the input terminal of the power supply module. A bias module has its input terminal connected to the output terminal of the voltage regulator module, and the output terminals of the bias module are connected to both the high-impedance signal pre-adjustment module and the OTL power module. This application has the advantages of improving signal processing stability, reducing nonlinear distortion, and enhancing power supply voltage adaptation capability.

The application discloses a condenser microphone preparation method and a condenser microphone, and relates to the technical field of condenser microphone preparation methods. The condenser microphone preparation method comprises the following steps: taking a polymer substrate as a substrate, and sequentially forming a microphone main body and a dustproof screen on the polymer substrate by using a three-dimensional printing technology; turning over the polymer substrate, the microphone main body and the dustproof screen which are connected in an integrated mode, so that the polymer substrate is placed upwards; peeling the polymer substrate from one side of the microphone main body which is far away from the dustproof screen; and depositing an electrode on one side of the microphone main body which is far away from the dustproof screen, so as to form a complete condenser microphone. The technical scheme is aimed at reducing the preparation difficulty of the condenser microphone preparation method, thereby improving the structural stability of the condenser microphone.