5 results about "Sound detection" patented technology

The invention discloses a mobile device and an operation method. The mobile device comprises a sound detection unit, a signal processing unit, a sound mixing unit, and a loudspeaker; and the mobile device plays the sound mixing signal through the loudspeaker in a sound mixing mode. The mobile device and the operation method convert environment sound around the mobile device to external sound signals, uses an external sound signal and a music signal to generate a mixing sound frequency signal in the sound mixing mode. As a result, the mobile device can selectively play the sound mixing signal through the loudspeaker and can further improve convenience and safety of the usage of the mobile device.

The invention discloses a fan abnormal sound detection system and relates to the technical field of fan detection. The fan abnormal sound detection system comprises a sensor module, a signal collection module, a data processing module and a fixed support. The sensor module comprises an acceleration sensor, a sound sensor and a thermoelectric converter. The signal collection module comprises an NI9234 data collection card and an NI cDAQ-9188XT Ethernet cabinet. The NI9234 data collection card is connected with the acceleration sensor and the sound sensor and is further connected with the NI cDAQ-9188XT Ethernet cabinet. The data processing system comprises a data conversion and characteristic extraction module based on Labview and a mathematic modeling analysis system module based on Matlab. The data conversion and characteristic extraction module based on Labview is connected with the NI cDAQ-9188XT Ethernet cabinet and the mathematic modeling analysis system module based on Matlab. According to the invention, signal collection, analysis and judgment are integrated, and the manual misjudgement problems caused by inconsistent boundary judgment are reduced; in addition, the automatic degree is high, manual cost is saved, and the production efficiency is improved.

The invention relates to the technical field of intelligent equipment detection, and provides a sound detection device using magnetorheological fluid, which comprises a sound detection device, the left side and the right side of the sound detection device are fixedly connected with magnetorheological fluid suspension bodies, and the center of the sound detection device is fixedly connected with asound source driver. The left side and the right side of the sound detection device are fixedly connected with detection outer frames, and the inner side of the sound detection device is fixedly connected with a sound part through the detection outer frames. According to the sound detection device utilizing magnetorheological fluid, when the sound equipment part works normally on the inner side, the detection outer frames are closed spaces, and air in the detection outer frames is heated. According to the principle of thermal expansion and cold contraction, the temperature rise of the air in the outer frame is detected, the expansion and extrusion air in the outer frame is detected, the air is sucked in from the folding frame, the air flow is introduced into the temperature measuring device through the ventilation tank, and through observing the temperature rise data of the temperature measuring meter, the heat resistance of the manufacturing material of the sound component and whetherthe released heat is normal can be detected.