9 results about "Audio sensing" patented technology

The utility model relates to the technical field of heating power supplies, in particular to an ultrasonic frequency induction heating power supply convenient to disassemble, which comprises a power supply protection box body, two clamping plates are arranged in the power supply protection box body in a sliding manner, and two mounting frames are arranged at the upper end part of the power supply protection box body in a sliding manner. A threaded rotating rod is rotatably mounted in each mounting frame, a fixed bottom plate is slidably mounted at the rear side end of the power supply protection box body, and bolts are mounted on the left side and the right side of the fixed bottom plate. According to the improved ultrasonic frequency induction heating power supply convenient to disassemble, the fixed bottom plate is matched with the bolts along the threaded holes, the fixed bottom plate is installed at a designated position, then the clamping groove formed in the side end of the fixed bottom plate is matched with the buckling plate, and the power supply protection box body and other parts are installed at designated positions; the power supply can be conveniently mounted and dismounted when the device is used, so that the use flexibility of the device is improved, and the device is convenient to assemble and use.

The utility model discloses an alarm device capable of carrying out audio intelligent detection. The alarm device comprises an audio generation device, an audio induction detection device and an intelligent control panel system, the audio generating device is electrically connected with the intelligent control panel system, and the intelligent control panel system drives the audio generating device to send out voice broadcast; the audio induction detection device inducts voice broadcast audio sent by the audio generation device in real time, converts the voice broadcast audio into a voltage signal and inputs the voltage signal into the intelligent control panel system; according to the utility model, the audio induction detector continuously collects the sound when the horn works, so that the problem that the state and volume of the horn can be monitored and controlled in real time in the using process of the horn of the alarm is solved.

This invention provides a control method and a sterilizing water preparation system that adaptively adjust the concentration of sterilizing gas based on water flow rate, belonging to the field of water treatment sterilization technology. The method uses an audio sensor to sample the audio signal generated by the water flow in the gas path. After filtering and noise reduction, it determines whether there are effective water flow audio characteristics, thereby automatically controlling the start and stop of the sterilizing gas generator. Based on the frequency and / or amplitude characteristics of the audio signal, it adaptively adjusts the concentration of the sterilizing gas output by the generator, thus maintaining the concentration of the final sterilizing water within a reasonable and effective range. This invention employs a sliding window weighted filtering algorithm to improve control accuracy and also introduces a temperature sensor to achieve water temperature interlock control. While ensuring the sterilization effect of the sterilizing water, it also features economy and ease of operation. Furthermore, it achieves corrosion resistance through non-contact audio sensing, making it widely applicable to various sterilization application scenarios.

The disclosed technology is directed towards efficiently identifying a first entity (e.g., a user or sensor) as a potential witness to an event. A first dataset describing event time data and event location data of an event are obtained from a first device. A second dataset describing device time data and device location data are obtained via a device associated with a second entity, e.g., a user. By analyzing the first and second datasets, e.g., for time and location intersection, the second entity can be identified as a potential witness to the event, and notified of such. Factors such as line of sight, speed and direction, audio sensing range versus event volume, and the like of the second entity can be used in determining whether the second entity is a likely witness. A witness to a live event can be identified and asked to send in live (e.g., video) evidence.

The application discloses an audio sensing signal optimization method and device based on constant power constraint, which comprises the following steps: filtering an audio sensing signal with constant power as a constraint through a filter to obtain a filtered audio sensing signal; calculating an error loss function of the filter based on an audio actual signal and the filtered audio sensing signal; and performing block iterative adjustment on filter coefficients according to the error loss function until the error loss function converges; and processing the audio sensing signal by using the filter after the error loss function converges, so that the iterative solution of the filter coefficients is realized on the basis of constant power, the amplitude recovery of outliers in the audio sensing signal can be ensured as much as possible during filtering, the noise of the filtered audio sensing signal can be effectively reduced, and the accuracy and effectiveness of optical fiber sensing are improved.

Systems and methods for simultaneously recovering and separate sounds from multiple sources using Impulse Radio Ultra-Wideband (IR-UWB) signals are described. In one embodiment, a device can be configured for generating an audio signal based on audio source ranging using ultrawideband signals. In an embodiment the device includes, a transmitter circuitry, a receiver circuitry, memory and a processor. The processor configured to generate a radio signal. The radio signal including an ultra-wideband Gaussian pulse modulated on a radio-frequency carrier. The processor further configured to transmit the radio signal using the transmitter circuitry, receive one or more backscattered signals at the receiver circuitry, demodulate the one or more backscattered signals to generate one or more baseband signals, and generate a set of data frames based on the one or more baseband signals.

The application discloses an audio sensing signal optimization method and device based on an improved least mean method, which comprises the following steps: calculating an error loss function of a filter based on a least mean square error and a square term least mean square error of an audio actual signal and an audio sensing signal filtered through the filter by circulation, so as to increase the proportion of outliers in the audio sensing signal in the total error loss function; iteratively adjusting filter coefficients according to the error loss function until the error loss function converges; and processing the audio sensing signal by using the filter after the error loss function converges, so that the outliers in the audio sensing signal are better estimated, the noise of the audio sensing signal after filtering is reduced, and the accuracy and effectiveness of fiber sensing are improved.

The invention relates to the field of data compensation, in particular to an audio compensation method and system for a Bluetooth headset, and the method comprises the steps: obtaining the posture information of the Bluetooth headset, carrying out the analysis of the audio playing effect of the Bluetooth headset according to the posture information, obtaining an audio sensing mode, recording the audio data of the Bluetooth headset, and transmitting the audio data to the Bluetooth headset; analyzing the user perception effect of the audio data based on the audio perception mode to generate audio perception data, recording the adjustment information of the user for the Bluetooth earphone, analyzing the audio perception demand of the user according to the adjustment information and the audio perception data to generate perception demand characteristics, and sending the perception demand characteristics to the Bluetooth earphone. And performing adaptive compensation on the audio data according to the perception demand characteristics to generate compensated audio data.

The invention discloses a financial security intelligent audio management system and method based on the Internet of Things, and relates to the technical field of security monitoring, and the method comprises the steps: collecting and preprocessing original audio stream data through a distributed audio sensing node, and generating a structured feature data packet; the edge intelligent analysis unit receives and deeply recognizes the data packet, and event semantic description is generated; the cloud collaborative management platform gathers and analyzes a plurality of event semantic descriptions, and generates a linkage control instruction; the security linkage execution module drives the video monitoring subsystem, the alarm subsystem, the access control subsystem and the broadcast subsystem to execute a cooperative response action according to the instruction; the system comprises a distributed audio sensing node, an edge intelligent analysis unit, a cloud collaborative management platform and a security linkage execution module. According to the invention, millisecond-level quick response can be realized, the false alarm rate is reduced, the cooperation efficiency of multiple security and protection subsystems is improved, and the security and privacy of audio data are ensured.