32results about "Electric megaphones" patented technology

The application discloses a sound amplification device, which comprises a vibrating body, the vibrating body comprises at least one first vibrating surface and at least one contact area for contacting with a vibration source, the vibration source and the contact area are in detachable contact, the area of the first vibrating surface is larger than that of the contact area, the vibration source is used for generating vibration, the vibration is transmitted to the first vibrating surface through the contact area and is transmitted outward through the first vibrating surface.

The utility model relates to the technical field of respirators, in particular to a fireman air respirator mask communication sound amplifying device, which comprises a mask main body, a communication sound amplifying device and a communication sound amplifying device, the dual-mode noise reduction microphone is embedded in the nose bridge of the mask main body; the flexible circuit board is mounted on the inner wall of the mask main body and is in signal connection with the dual-mode noise reduction microphone; the sound amplification loudspeaker is mounted at the lower jaw position of the mask main body, and the sound amplification loudspeaker directionally conducts sound through an acoustic flow guide cavity in the sound amplification loudspeaker; the connecting mechanisms are installed on the mask body and used for enabling the mask body to be stably worn on the head, and the number of the connecting mechanisms is at least one set; the alarm mechanism is mounted on the mask body and used for detecting stable fit between the mask body and the face; the magnetic control power supply mechanism is mounted on the mask main body, and the magnetic control power supply mechanism is electrically connected with the flexible circuit board; the noise reduction effect is high, and sound transmission is stable.

The utility model discloses a power amplification system for an electroacoustic alarm supporting out-of-band audio monitoring, which comprises a communication interface and control module, a test sound generation module, an audio processing module, a power amplification module and a voltage and current monitoring module, the communication interface and control module receives a control instruction of the alarm control module and issues the control instruction to the corresponding module, the test sound generation module generates out-of-band test audio with the needed frequency and amplitude, and the audio processing module is used for processing audio signals of the out-of-band test audio or alarm audio. And the power amplification module is used for performing power amplification on the processed audio signal and outputting the amplified audio signal to a loudspeaker, and meanwhile, controlling the voltage and current monitoring module to perform voltage and current monitoring on an audio output channel and sending monitoring data to the alarm control module through the communication interface and control module.

The application relates to a mixing method, an audio device and a mixing system. The mixing method comprises determining a reference mixed signal and at least one to-be-compared sound signal according to at least two input sound signals. The time domain similarity parameter and the frequency domain similarity parameter corresponding to each to-be-compared sound signal are determined according to each to-be-compared sound signal and the reference mixed signal respectively. At least one to-be-mixed sound signal is determined according to the time domain similarity parameter and the frequency domain similarity parameter of each to-be-compared sound signal. Mixing processing is performed according to the reference mixed signal and the at least one to-be-mixed sound signal to output a target sound signal. Obviously, the application can effectively meet the requirement of multi-person simultaneous communication, improve the quality of voice communication and improve the auditory experience of the audience.

The invention relates to a sound mixing method, audio equipment and a sound mixing system. The sound mixing method comprises the following steps: determining a reference sound mixing signal and at least one sound signal to be compared according to at least two paths of input sound signals; and determining a time domain similarity parameter and a frequency domain similarity parameter corresponding to each to-be-compared sound signal according to each to-be-compared sound signal and the reference sound mixing signal. And determining at least one to-be-mixed sound signal according to the time domain similarity parameter and the frequency domain similarity parameter of each to-be-compared sound signal. And performing sound mixing processing according to the reference sound mixing signal and the at least one to-be-mixed signal to output a target sound signal. Obviously, the application can effectively meet the simultaneous call of multiple persons, improve the quality of voice call, and improve the auditory experience of audiences.

This application mainly relates to a sound amplification device applied to headphones, including a box body, and a contact area for contacting the speaker of the headphones is provided on the box body, so that the vibration generated by the speaker can be transmitted to the box body through the contact area. Through the sound amplification device, this application can increase the contact area between the speaker of the headphones and the air, so as to amplify the mechanical vibration of the headphones through the box body, at least increasing the volume of the sound heard by the user and improving the sound quality.

The utility model provides a flood discharge early warning system wireless broadcast installation support which comprises a bottom plate, the top face of the bottom plate is welded to the bottom of a vertical rod, the upper end of the vertical rod is provided with a lightning rod, loudspeakers and indicator lamps, the loudspeakers and the indicator lamps are evenly distributed towards the periphery and outwards, and the middle of the vertical rod is provided with a fixing support, a solar panel and an equipment box. The solar panel is connected with the fixing support through the adjusting assembly, the equipment box is installed on the surface of the fixing support, a storage battery, a charging and discharging controller and a wireless early warning host are arranged in the equipment box, the storage battery is electrically connected with the charging and discharging controller, and the charging and discharging controller is electrically connected with the wireless early warning host, the solar panel, the adjusting assembly and the indicator light. The wireless early warning host is electrically connected with the tweeter. Through the ground cage type embedded part, the mounting strength of the bottom plate and the mounting area can be improved, and the stability and the wind resistance are improved; acousto-optic warning is carried out through the waterproof loudspeakers facing four directions and the indicator lamps, so that nearby vehicles or pedestrians can find the warning conveniently.

The present application discloses an intelligent speaker, which includes a first inner shell, a second inner shell, a first outer shell, a second outer shell and a first director group. The first inner shell has at least one first speaker. The second inner shell is disposed on the first inner shell and has at least one second speaker and at least one active antenna module. The first outer shell surrounds and covers the first inner shell, and the second outer shell surrounds and covers the second inner shell. The first director group is disposed on a side of the second outer shell facing the second inner shell and is positioned corresponding to at least one active antenna module.

The application discloses an audio playing control method, comprising: acquiring first audio data; acquiring an environmental noise decibel value; performing sound source separation on the first audio data to obtain a plurality of second audio data with different frequency structures; adjusting the volume of the plurality of second audio data according to the environmental noise decibel value; performing audio mixing on the second audio data after volume adjustment; and adjusting the playing volume of the second audio data after audio mixing according to the environmental noise decibel value. The audio playing control method provided by the application can realize sound source separation of playing audio data, and adjust the volume of, for example, target sound source data and environmental sound source data according to the environmental noise condition, thereby improving the automatic adjustment capability of the system. The volume of sound of different sound sources is adjusted, so that sound containing substantial content such as a human voice sound source is highlighted in a noisy environment, and all kinds of sound sources are balanced in a quiet environment, giving people a sense of stability and improving the auditory experience.

Disclosed are systems and methods utilize networked speaker arrays and audio waveform shaping using interferometric feedback of sound transmitted by the speaker arrays. In further aspects, the systems and method employ an intelligently controlled acoustic device that can focus sound at specific locations and record the acoustic environment / reflected sound to self-calibrate for improved performance. Moreover, the device is modular and scalable with the ability to network distributed speakers to enhance the audio performance.

The utility model belongs to the technical field of abnormal sound detection, and particularly relates to an online abnormal sound detection device for a compressor, which comprises a detection base, the surface of the detection base is fixedly connected with a lifting platform, the lifting platform is fixedly connected with a sensor, the detection base is provided with a sound amplifying device, and the sound amplifying device comprises a fixed seat. According to the online abnormal sound detection device for the compressor, through the arranged sound amplifying device, when sound enters a permanent magnet, a vibrating diaphragm vibrates to drive a coil I to vibrate, a magnet generates a magnetic field, a magnetic induction line generates alternating current, the alternating current enters a coil II to drive a movable block in a sound amplifying shell to move, and the movable block drives a sound amplifying vibrating diaphragm to vibrate; the electric signals are converted into sound signals again and amplified and output, the sound amplification vibrating diaphragm is subjected to electromagnetic conversion and amplification processes, and the output sound signals are more loud than the input sound signals, so that the sound amplification effect is achieved, efficient sound amplification is achieved, and the detection accuracy and reliability are improved.

The present invention provides a sound transmission assembly and a sound transmission method for transmitting speech uttered by a user wearing a breathing apparatus mask for one or more sound applications. [Solution] A sound transmission assembly (100) for a respiratory device, comprising a mouth-covering mask (10) worn by the user of the respiratory device, the sound transmission assembly (100) comprising: at least one vibration sensor assembly (110) that generates an audio signal based on vibrations detected on the outer surface of the mask (10); a sound application assembly (130) that applies the audio signal obtained from the at least one vibration sensor assembly (110); and a sound processing unit (120) that preprocesses the audio signal obtained from the vibration sensor assembly (110) before passing it to the sound application assembly (130) for application.

This application provides an audio speaker, relating to the field of acoustic equipment technology. The speaker includes: a cabinet; a loudspeaker connected to the cabinet; a partition disposed inside the cabinet, dividing the space within the cabinet into a main cavity and a secondary cavity, with the loudspeaker opposite the main cavity; multiple passive radiators, each disposed on an opposing surface of the cabinet and the partition; a linkage connecting the multiple passive radiators, used to actuate the multiple passive radiators; and a perforated component disposed within at least one of the main cavity and the secondary cavity. This speaker can reduce the resonant frequency of the acoustic system, while absorbing standing waves and excess reflected sound energy, reducing acoustic interference and nonlinear distortion, and preventing noticeable bass trailing and muddiness.

The invention relates to the technical field of intelligent sound boxes, in particular to a sound system with an AI recognition regulation and control function, the sound system comprises a main box shell and a bottom supporting plate, and an electric control type turnover control module is arranged on the front side of the main box shell and right above a control assembly. According to the invention, the optical lens module is matched with the AI recognition module, so that real-time distance, position and action feature data of dancing personnel can be accurately collected and recognized, and intelligent perception of user states is realized; based on the identification data, the main control module can automatically adjust the overall power of the multi-loudspeaker module and the independent power of the loudspeakers in different directions, so that the problems that the volume adjustment of a traditional sound box depends on manual operation and the sound coverage is unbalanced are solved, the auditory suitability is improved, and meanwhile, the power consumption waste is also reduced; and the audio track correction module can correct the audio track in real time in combination with the action characteristics of the dancer, so that the music rhythm is highly matched with the dance action, and the dance coordination and experience feeling are enhanced.

The utility model provides an explosion-proof communication device for well drilling, and relates to the field of explosion-proof communication equipment for well drilling, the explosion-proof communication device for well drilling comprises two groups of hand-free communication machines, a microphone body, a communication junction box and a sound amplification assembly, the two groups of hand-free communication machines are respectively a host and a slave, each hand-free communication machine comprises a box body, a mainboard and a loudspeaker, the main board is fixed in an inner cavity of the box body, the loudspeaker is installed at the top of the box body, the microphone body is connected with the hands-free communication devices through a cable, the two hands-free communication devices are connected with each other through a communication junction box, the communication junction box is used for transmitting signals, and the sound amplification assembly comprises a power amplifier junction box and a sound amplification loudspeaker. According to the utility model, instructions are received through the host computer or the slave computer, and the microphone, the host computer, the slave computer, the junction box, the power amplifier junction box and the loudspeaker are combined for use, so that real-time communication can be realized in drilling operation, and the communication quality and the working efficiency are improved.

The invention discloses a local sound amplification method based on an acoustic feedback suppression technology, and belongs to the field of acoustic feedback suppression of sound amplification systems. The invention aims to solve the technical problem of poor howling suppression effect caused by impure reference signals and poor environmental adaptability in the prior art. According to the invention, a pure voice reference signal and a mixed audio signal are synchronously acquired through a bone conduction sensor and an air conduction microphone; measuring the acoustic environment of the sound amplification space according to the detection signal and adjusting the neural network prediction model; carrying out adaptive filtering on the mixed audio signal by adopting a pure voice reference signal to extract a speaker voice component; performing howling risk analysis according to the adjusted prediction model to generate potential howling frequency points; the potential howling frequency point is utilized to execute adaptive notch processing to form a primary suppression sound amplification signal; and finally, applying random micro-delay disturbance to generate a final suppression feedback sound amplification signal.

The present invention relates to a multi-mode interaction method between a Bluetooth speaker and a smart phone. The speaker is provided with a first magnet ring with an adjustable angle, which is magnetically adsorbed to a second magnet ring on the smart phone to achieve physical connection of the devices; a wireless connection between the speaker and the smart phone is established through the Bluetooth protocol, and the physical adsorption state of the devices is detected, including a first adsorption state, a second adsorption state and a third adsorption state. The first adsorption state is a video viewing angle where the smart phone forms an angle of 50-70 degrees with the horizontal plane; the second adsorption state is a video call angle where the smart phone forms an angle of 0-15 degrees with the horizontal plane; the third adsorption state is that the speaker is not adsorbed to the phone. Switch to the corresponding interaction mode according to the adsorption state, analyze the usage data of the user in different modes by using machine learning algorithms, generate a personalized parameter scheme, and automatically apply it in the corresponding state to optimize the user experience.

A loudspeaker grille comprises a carrier element, which comprises a plurality of openings through a front surface, and a cover element to be attached to the front surface, which comprises a plurality of openings corresponding to the openings of the carrier element. The cover element is attached to the carrier front surface, wherein the cover element covers at least part of the front surface of the carrier element, and wherein the openings of the carrier element and the cover element are aligned with each other. The cover element is made of a flexible organic material, in particular a compound material with an organic outer surface layer, such as cork-leather.

The invention relates to application of acoustic technology in the field of automobile intelligent cabins, in particular to a playing control method and device, electronic equipment, a storage medium and a program product. The playing control method comprises the steps of obtaining preset frequency response information and a to-be-played audio signal, the preset frequency response information being used for representing a deviation between a real frequency response of a target playing device and a target frequency response; determining a target audio signal according to the preset frequency response information and the audio signal to be played; and controlling the target playing device to play the target audio signal. The technical scheme can be applied to a voice algorithm test scene of the intelligent cockpit, realizes high-precision restoration of real human voice, and improves the test precision of the voice algorithm of the intelligent cockpit.

Systems and methods for volume control over intercom trunk lines. One example method includes receiving, from a first keypanel coupled to a first intercom, a call request identifying a remote keypanel coupled to a second intercom. The method includes transmitting a trunk request based on the call request and receiving a trunk setup message. The method includes activating a first crosspoint to provide a two-way audio connection between the first and second intercom devices. The method includes applying a trunk gain value to the first crosspoint based on the remote keypanel and transmitting, with an audio gain based on the trunk gain value, an audio stream received from the first keypanel. The method includes receiving, from the second intercom, a gain adjustment value associated with the first keypanel and the remote keypanel and applying an adjusted trunk gain value to the first crosspoint based on the gain adjustment value.

The utility model discloses an electronic organ sound equipment structure, which comprises an organ body, a sliding mechanism, a rotating mechanism and a sound equipment, the organ body comprises a keyboard and a control panel body connected to the upper part of the keyboard, the control panel body comprises a first vertex angle end and a second vertex angle end which are opposite to each other, and rotating cavities are arranged in the first vertex angle end and the second vertex angle end. Each rotating cavity is provided with two opening parts which are connected and communicated with each other, the two sliding mechanisms are arranged on the side walls, close to the keyboard, in the rotating cavities of the first vertex angle end and the second vertex angle end respectively, the two rotating mechanisms are arranged on the two sliding mechanisms respectively, the two loudspeakers are arranged on the two sliding mechanisms respectively, and the two loudspeakers are arranged in the rotating cavities of the first vertex angle end and the second vertex angle end respectively. The two rotating mechanisms are respectively arranged on the two rotating mechanisms. Therefore, the sliding mechanism and the rotating mechanism jointly control the sound equipment, so that the position, orientation and playing effect of the sound equipment hardware can be controlled and adjusted according to scene requirements, and the requirements of scene changes can be better met.

The utility model discloses a flute performance effect sound amplification device, which comprises a flute main body, a support sleeve plate, a guide sleeve plate and a sound amplification module adjusting mechanism, the support sleeve plate is fixedly sleeved on the outer wall of one end of the flute main body, the guide sleeve plate is rotatably sleeved on the outer wall of the support sleeve plate, and the sound amplification module adjusting mechanism is arranged on the guide sleeve plate. The sound amplification module adjusting mechanism comprises a supporting plate, a limiting assembly, an assembly head and a replacement assembly, the supporting plate is fixedly connected to the outer wall of the guide sleeve plate, the limiting assembly is installed on the outer wall of the supporting sleeve plate and connected with the outer wall of the guide sleeve plate, the assembly head is fixedly connected to the outer wall of the supporting plate, and the replacement assembly is installed on the assembly head and connected with the guide sleeve plate. Accordingly, the corresponding and appropriate microphone is replaced through the replacement assembly, effective sound amplification is achieved, the microphone can be driven to adjust different positions by rotating the guide sleeve plate, practicability is improved, meanwhile, after position adjustment of the microphone is completed, position fixing of the microphone can be achieved through the limiting assembly, and the practicability is improved. Therefore, the stability of the playing process is ensured.

The present invention is entitled "Medical Device and Procedure." To provide a technique that enables an operator to confirm whether their voice is being output from a speaker in a scanning room while speaking into a microphone, a CT apparatus 1 includes: an operator microphone 41 installed in an operating room R2 for receiving the voice of an operator 81; a patient microphone 2 installed in a scanning room R1 for receiving the voice of a patient 80; a speaker 50 installed in the operating room R2 for outputting the voice of the patient 80 received by the patient microphone 2; a speaker 5 installed in the scanning room R1 for outputting the voice of the operator 81 received by the operator microphone 41; and a light emitting portion 31 for notifying the operator 81 that their voice is being output from the speaker 5 when the patient microphone 2 has received the voice of the operator 81 output from the speaker 5.

The invention relates to a vehicle comprising: at least one lateral glazing; at least one vibration sensor arranged on a lateral glazing for detecting sound vibrations propagating on the glazing; at least one audio transmitter; a calculation unit connected to the vibration sensor and the audio transmitter; characterized in that the computing unit is arranged to: receive an electrical signal representing a sound signal from the vibration sensor; the signal is processed in order to isolate a useful signal representing speech, which is transmitted by the computing unit towards the audio transmitter.

The application relates to the technical field of acoustic signal processing and emergency broadcasting, and discloses a multi-source fusion alarm method and system for an emergency intelligent broadcasting system. The method comprises the following steps: acquiring multi-path environmental audio data collected by a distributed microphone array and a target audio signal to be broadcast; performing spatial energy spectrum analysis according to the multi-path environmental audio data to obtain an environmental noise distribution graph representing noise intensities of different coordinate points in space; determining a gain compensation parameter according to the environmental noise distribution graph and a discretized guide node, and performing gain adjustment on the target audio signal to obtain a to-be-projected audio signal; performing phased beamforming processing according to the to-be-projected audio signal and a calculated phase delay parameter to obtain a directional projection vector and drive a loudspeaker array to emit sound waves, thereby forming a spatialized guide sound field on an escape path. The method can realize accurate directional projection and dynamic path guidance of evacuation instructions in a complex high-noise environment.

To assist conversations between passengers inside a mobile vehicle with good sound quality. [Solution] A conversation assistance system comprising a plurality of conversation assistance devices arranged inside a mobile vehicle, each of the plurality of conversation assistance devices comprising a housing having at least one opening, a microphone mounted on the housing, a speaker unit having a sound-emitting part arranged inside the housing, and a guide member that guides sound from the sound-emitting part to the at least one opening, wherein the guide member causes the sound from the sound-emitting part to be emitted to the outside of the housing in a direction away from the microphone from the at least one opening.

The invention relates to the technical field of audio enhancement, in particular to an audio signal enhancement method in a tunnel environment based on directional sound waves, and the method comprises the steps: collecting audio signal data and audio decibel data at preset positions in a tunnel in real time; dividing the whole data acquisition time interval into various time periods, acquiring a wave crest fluctuation coefficient at each position in each time period, acquiring a wave crest difference coefficient at each position in each time period, and further acquiring a stability coefficient at each position in each time period; according to the change condition of the audio signal data at each position in the historical time period, acquiring the audio short-term variation at each position in each time period; and obtaining an interference coefficient and an adjustment urgency degree at each position in each time period, so as to screen the position where the broadcast audio signal needs to be enhanced in each time period. The invention aims to improve the propagation quality of broadcast audio, thereby ensuring that drivers and conductors can clearly listen to the content of tunnel broadcast everywhere in the tunnel.

The invention relates to USB equipment and sound equipment, the USB equipment is used for being connected with target equipment through a USB interface and being connected with at least one sound box to form the sound equipment, and the USB equipment comprises a controller which is configured to determine that the sound equipment is used for being combined with display equipment to play a target audio signal under the condition that the target equipment is determined to be the display equipment; and when it is determined that the target device is a target sound box in the at least one sound box and the USB device is in Bluetooth connection with a display device, determining that the sound device is used for independently playing a target audio signal from the display device.

The invention relates to the field of audio circuit and power supply management, and discloses battery-powered sound equipment with an intelligent power supply isolation function and a power supply control method of the battery-powered sound equipment. The problems that external power supply noise is easily introduced when existing equipment is used while being charged, and the plugging state cannot be sensed after main power supply is cut off are solved. The scheme is characterized in that a main power supply path is connected in series with a power supply switching unit, and the input side is connected with a bypass detection unit; when the equipment is in an audio working state, the power supply switching unit is disconnected to enter a pure battery power supply mode to physically isolate noise; during the disconnection period, the bypass detection unit continuously monitors the state of the input voltage, identifies plugging and executes recovery control. The invention is mainly used for various battery-powered sound equipment.

Systems and methods for volume control over intercom trunks. One example method includes receiving a call request from a first key panel coupled to a first intercom that identifies a remote key panel coupled to a second intercom. The method includes sending a trunk request based on the call request and receiving a trunk setup message. The method includes activating a first crosspoint to provide a bidirectional audio connection between the first and second intercom devices. The method includes applying a trunk gain value to the first crosspoint based on the remote key panel and transmitting an audio stream received from the first key panel with an audio gain based on the trunk gain value. The method includes receiving a gain adjustment value associated with the first key panel and the remote key panel from the second intercom and applying an adjusted trunk gain value to the first crosspoint based on the gain adjustment value.