18 results about "Digital speaker" patented technology

The present application discloses an audio phase modulation method, apparatus, device, and storage medium, belonging to the technical field of electronic equipment. The method is applied to an electronic device, the electronic device including a digital speaker, the digital speaker including N sound-emitting units, and the method comprising: obtaining a first analog audio signal; decomposing the first analog audio signal into N second analog audio signals, the superposition amplitude of the N second analog audio signals being equal to the amplitude of the first analog audio signal; and controlling the N sound-emitting units to play the N second analog audio signals respectively based on a target sequence, the N sound-emitting units corresponding to the N second analog audio signals.

The present invention discloses a waterproof diversion type digital audio system, comprising a supporting base, a accommodating box, a speaker body, a positioning ring sleeve, and a waterproof diversion assembly; the present invention drives a plurality of drainage covers to move up and down on the inner side of each row of sound holes through the rotation of a rotating rod, so that flexible adjustment can be achieved. Generally, a drainage cover is distributed below the inner side of each row of sound holes, so that when rainwater enters the sound holes, it can be collected by the drainage cover and diverted downward in sequence through the serial diversion pipes, and finally discharged from the lower drainage pipe; when the external rainwater is relatively dense, in order to better waterproof, the rotating rod is rotated to drive the adjustment block to move upward, so that the upper guide rod drives the plurality of drainage covers to move upward, so that the position of the drainage cover on the inner side of each row of sound holes becomes higher, so that the waterproof effect is better, so that it can be flexibly adjusted according to actual conditions, and is convenient to use.

The utility model discloses a waterproof structure and a digital loudspeaker, and relates to the technical field of loudspeakers, and the waterproof structure comprises a protection layer which is attached to the outer wall, deviating from a sound production cavity, of a shell in the loudspeaker and covers a sound production hole in the shell; the sound transmission membrane assembly covers the sound outlet hole, the sound transmission membrane assembly is close to the sound production cavity relative to the protective layer, and the sound transmission membrane assembly comprises a waterproof sound transmission membrane and a supporting layer; the water absorption part comprises a first water absorption layer and a second water absorption layer which are both arranged in the sound production cavity, the first water absorption layer surrounds the edge of the sound production hole, and the second water absorption layer is located in the opening direction of the sound production hole and corresponds to the sound production hole. According to the waterproof structure provided by the utility model, water drops and moisture are blocked and absorbed layer by layer through the protection layer, the sound transmission membrane assembly and the water absorption part, so that the waterproof capability is improved, a relatively good dry environment can be kept in the sound production cavity, the aging of an electronic device accelerated by a humid environment is obviously slowed down, and the service life of a product is prolonged.

This application discloses an AI-based method and system for intelligent control of digital speaker sound field parameters, relating to the field of digital professional audio equipment technology. The method includes: acquiring environmental acoustic parameters and user-played content, and identifying the playback scene to obtain the playback scene; performing auditory demand analysis to obtain an auditory demand solution; obtaining an initial sound field control target, and conducting an environmental impact assessment based on the environmental acoustic parameters to obtain an optimized sound field control target; iteratively optimizing the control parameters of the digital speaker in conjunction with the playback scene to obtain an optimized control scheme, and intelligently controlling the digital speaker. This solves the technical problem that existing digital speaker sound field parameter control methods cannot dynamically adapt to complex environmental changes and personalized auditory needs, resulting in poor sound quality and a poor user experience.

The application discloses a digital loudspeaker volume control method, device, equipment and medium, relates to the loudspeaker technical field, and is used for solving the problems of quality reduction and complex manufacturing process in the prior art. The method comprises the following steps: receiving a volume adjustment instruction; determining an electric energy signal loaded to a loudspeaker unit in each quantized audio digital stream based on the volume adjustment instruction; the electric energy signal at least comprises an electric energy amplitude signal or an electric energy action time signal; adjusting sound pulse energy output by the loudspeaker unit based on the electric energy amplitude or the electric energy action time, and completing volume adjustment. The scheme realizes volume control of digital sound production based on the electric energy amplitude or the electric energy action time, does not need a digital-analog converter, and does not need multiple transducing element hardware supports. On the basis of not increasing the number of rows of transducing elements, the electric signal energy loaded to the loudspeaker unit is controlled, so that the sound pulse energy output is controlled, and digital volume adjustment is realized.

The utility model discloses a packaging structure and a digital loudspeaker, and relates to the technical field of loudspeakers, the packaging structure provided by the utility model comprises a packaging shell body, the packaging shell body comprises an anti-reflection surface deviating from one side of a substrate, the anti-reflection surface extends to a digital sounding chip, the anti-reflection surface is a continuous and smooth arc-shaped surface, and the anti-reflection surface is arranged on the substrate. The arc center of the anti-reflection surface is located on one side of the substrate, and the distance between the anti-reflection surface and the substrate is gradually reduced in the extending direction from the anti-reflection surface to the digital sounding chip. According to the packaging structure provided by the utility model, after the digital sounding chip generates sound waves, the sound waves can be diffused outwards along the continuous and smooth anti-reflection surface, so that mutual interference and superposition after the sound waves are reflected back are reduced, random high-frequency signals are obviously reduced, and the sound quality of the digital sounding chip is further improved.

The present invention relates to a digital speaker drive system, characterized by comprising a first connection terminal, a second connection terminal, a power supply terminal, a ground terminal, a speaker, a first ferrite and iron-rich conductor co-fired body, a second ferrite and iron-rich conductor co-fired body, a third ferrite and iron-rich conductor co-fired body, a first field-effect transistor switch drive circuit, a second field-effect transistor switch drive circuit, a first N-channel field-effect transistor, a second N-channel field-effect transistor, a first diode, a second diode, and the like. The speaker is provided with a forward winding and a reverse winding, respectively. This invention can reduce ΔT without changing the existing structure and materials of the speaker, and can also compensate for the defect of existing power switching tubes in reproducing small signals during use. This can significantly improve the sound quality of electrodynamic digital speakers. Furthermore, the overall circuit structure of the digital speaker drive system has the advantages of simplicity, reliability, and good stability.

This application relates to the field of Chinese digital human technology, and discloses a method and apparatus for evaluating the lip-reading matching degree of Chinese digital human speech based on lip reading recognition, as well as a lip reading recognition device. The method includes: acquiring an image sequence of the lip region in an original video and the corresponding real text; performing text inference on the image sequence of the lip region based on an AVSR model and an RNN language model to obtain predicted text corresponding to the image sequence; and calculating the Chinese syllable matching degree of the real text and the predicted text within a sliding window to obtain the evaluation result of the lip-reading matching degree. This application can evaluate the matching degree of lip reading recognition results. It not only improves the accuracy of the evaluation but also solves the complexity problems caused by polyphonic characters and homophones in the Chinese context.

This invention discloses a method, apparatus, device, and medium for controlling the volume of digital sound, relating to the field of digital sound technology, and addressing the problem of reduced sound quality during volume adjustment in existing technologies. The method includes: acquiring digital audio data to be processed from a digital loudspeaker; performing DSR preprocessing on the digital audio data to obtain multiple quantized audio digital streams; setting the volume level of the digital loudspeaker's sound signal based on the number of transducers involved in driving each quantized audio digital stream; and adjusting the volume of the sound signal by adjusting the number of transducers involved in driving each quantized audio digital stream. This method achieves volume control of digital sound based on the number of transducers, eliminating the need for a digital-to-analog converter and enabling volume adjustment of digital sound without degrading sound quality.

The application discloses a digital sound reconstruction method and device, a storage medium and a digital loudspeaker, relates to the technical field of sound reconstruction, and aims to solve the technical problems that the prior art cannot realize digital sound emission and commercial mass production of digital sound emission. The digital loudspeaker comprises an array circuit of transducing elements and an array of transducing elements which are electrically connected. The digital sound reconstruction method comprises the following steps: obtaining a preprocessed audio data stream; determining the number of transducing elements matched with the sound pressure value of the current audio data in the audio data stream based on the sound pressure value; generating a circuit switch digital signal stream based on the array circuit of transducing elements and the number of transducing elements; and controlling the array circuit of transducing elements by using the circuit switch digital signal stream to drive the transducing elements at the corresponding positions in the array of transducing elements to vibrate, reconstruct the sound signal of the current audio data, and realize digital sound emission.

The application discloses a flat panel loudspeaker based on a digital sound production chip, and relates to the field of digital loudspeakers, and aims to solve the problems of large size, slow response, poor sound quality and insufficient bass of existing flat panel loudspeakers. A plurality of digital sound production chips are arranged on a substrate in the flat panel loudspeaker, and the digital sound production chip comprises an ASIC module and a plurality of groups of sound production pixel unit arrays. Each digital sound production chip can play the same audio; or a plurality of digital sound production chips can play one audio in combination; so that the sound quality and the sound pressure level of the flat panel loudspeaker are improved.

The invention provides an audio processing method and system based on reinforcement learning and a digital loudspeaker, and relates to the technical field of audio processing, and the method comprises the steps: collecting an audio signal received by the digital loudspeaker; the method comprises the following steps: converting an audio signal into an audio frequency domain correction signal, performing distortion suppression on the audio frequency domain correction signal to obtain an audio distortion weighing signal, and further extracting an energy dynamic trend vector in the audio distortion weighing signal; acquiring a pre-trained audio content classification model based on reinforcement learning, and performing content classification on the audio signal according to the energy dynamic trend vector and the audio content classification model based on reinforcement learning so as to obtain an audio content type of the audio signal received by the digital loudspeaker; and performing dynamic sound effect enhancement on the audio signal received by the digital loudspeaker according to the audio content type. According to the invention, the audio content identification result can be fully utilized to dynamically drive the switching and adjustment of the enhancement strategy, so that the sound effect adjustment response capability of the digital loudspeaker to the input audio is improved.

1. The name of the product under this design: Wireless Digital Speaker (D50). 2. Purpose of this design product: used for audio player. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 1.

A sound-producing assembly, and a digital loudspeaker system and a control method therefor. The digital loudspeaker system comprises: N sound-producing assemblies, wherein N is greater than or equal to 2; a mounting seat, which has a plurality of mounting grooves, wherein at most one sound-producing assembly is arranged in each mounting groove; and a digital audio signal input PCB, which is used for accessing a sound source signal and converting same into a digital signal capable of driving the sound-producing assemblies to make sounds. Each sound-producing assembly comprises a support, a magnetic circuit system arranged in the support, a sound-producing diaphragm connected to the support, and a voice coil connected to the sound-producing diaphragm, wherein the magnetic circuit system has a magnetic gap, part of the voice coil is inserted into the magnetic gap, and an inner cavity is formed between the sound-producing diaphragm and the magnetic circuit system; and an airflow channel is formed between the inner surface of the support of each sound-producing assembly and the outer surface of the magnetic circuit system, the mounting seat further has an airflow cavity, and each inner cavity is in communication with the airflow cavity by means of a corresponding airflow channel. The digital loudspeaker system can realize pure digital input driving, and improves the bass effect.

Sound assembly, digital speaker system and control method thereof. [Solution] A digital speaker system includes N (N≧2) sound assemblies, a mounting base with a plurality of mounting grooves, each mounting groove capable of mounting one sound assembly, and a digital audio signal input PCB board for receiving an audio signal and converting the audio signal into a digital signal capable of driving the sound assembly to produce sound. Each sound assembly includes a bracket, a magnetic circuit system mounted on the bracket, a sound-producing diaphragm connected to the bracket, and a voice coil connected to the sound-producing diaphragm. The magnetic circuit system has a magnetic gap, and the voice coil is partially inserted into the magnetic gap. An inner cavity is formed between the sound-producing diaphragm and the magnetic circuit system. An airflow channel is formed between the inner surface of each bracket of the sound assembly and the outer surface of the magnetic circuit system. The mounting base further has an airflow cavity, and each of the inner cavities communicates with the airflow cavity via a corresponding airflow channel. The digital speaker system achieves pure digital input driving and can improve bass effect.

The utility model discloses a sound reconstruction device and a digital loudspeaker. According to the sound reconstruction device, an audio input module is connected with a first end of a control module; the second end of the control module is connected with the first end of the controlled switch module, and the control module is used for converting the received analog audio signal into a digital audio signal and transmitting the digital audio signal to the controlled switch module; the second end of the controlled switch module is connected with the carrier output module, the third end of the controlled switch module is connected with the first end of the driving module, the second end of the driving module is connected with the digital loudspeaker array, and the controlled switch module is used for controlling connection and disconnection between the carrier output module and the driving module based on digital audio signals; the carrier output module is used for sending a carrier signal to the controlled switch module; and the driving module is used for controlling the digital loudspeaker array to work based on the carrier signal. According to the utility model, sound reconstruction of the digital loudspeaker array is realized on the hardware level.

This application discloses an electronic device belonging to the field of communication technology. The disclosed electronic device includes a device body and a speaker. The speaker is disposed in the device body and is a digital speaker. The digital speaker includes a driver chip, a sound-emitting part, and a receiving unit. The sound-emitting part includes multiple vibration units. The driver chip can control the working state of each vibration unit according to the target sound parameters. The driver chip can control at least one vibration unit to emit ultrasonic signals, and the receiving unit can receive the reflected ultrasonic signals.

The invention provides intelligent digital sound equipment for music teaching, which comprises the steps of determining a music style of current teaching according to a teaching task, constructing a teaching style rendering scene in combination with spatial arrangement information of a teaching field, determining learning requirements of students according to current teaching characteristics, and displaying the teaching style rendering scene. Performing picture display on a picture display terminal related to the teaching style rendering scene, deducing an optimal playing mode in the teaching style rendering scene according to the picture display and the current teaching characteristics, performing corresponding sound playing, obtaining real-time field data of a teaching field, deducing a learning state of a student, and displaying the learning state of the student. The picture display and the sound playing are optimized in real time by utilizing the learning state, the requirements of teachers can be responded according to the teaching progress and the teaching content in the teaching process, and the picture playing angle and the sound playing intensity can be adjusted according to the actual positions of the students to assist the teachers in better completing the teaching work. Students are helped to understand teaching contents.