9 results about "Speech clarity" patented technology

The utility model relates to the technical field of wall surface cloth, in particular to curved surface acoustic wall surface sticking cloth. The patch comprises a patch body, two convex grooves are formed in the surface of the patch body, strip-shaped plates are connected to the surfaces of the convex grooves in a sliding mode, connecting blocks are fixedly connected to the surfaces of the strip-shaped plates, flannelette is fixedly connected to the surfaces of the two connecting blocks, and the flannelette is attached to the surface of the patch body. The surface of the flannelette is fixedly connected with a plurality of flannelette points, the height sizes of the flannelette points are different, the surface of the patch body is provided with a plurality of sound absorption grooves, and a plurality of refraction protrusions are arranged in the sound absorption grooves. The problems that when sound waves meet a flat patch body, the sound waves on the surface of the patch body are intensively reflected, so that indoor sound interferes with each other, echo is obvious, voice definition is reduced, noise pollution is aggravated, normal communication, learning and rest of people are seriously affected, and even hearing fatigue is possibly caused are solved.

The invention relates to a wind noise quality evaluation method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining the wind noise data and subjective evaluation results of a plurality of sound collection devices under each test condition; based on a preset evaluation standard, performing sound quality data analysis on the wind noise data of each test working condition to obtain a wind noise quality data analysis result of each test working condition, thereby determining a problem frequency band of each test working condition; and finally, obtaining a wind noise quality evaluation result of each test working condition according to the problem frequency band of each test working condition and the subjective evaluation result of each test working condition. Therefore, the problem that in the prior art, wind noise is directly evaluated by mostly using indexes such as sound pressure level and language definition, and technical means for evaluation from the angle of sound frequency characteristics are lacked is solved, the wind noise level of the vehicle under different working conditions can be systematically evaluated, and the evaluation accuracy is improved. And sound quality evaluation indexes corresponding to subjective evaluation can be found for noise with different frequencies.

This specification provides one or more embodiments of an in-vehicle audio equalization method, apparatus, storage medium, and program product. The method includes: acquiring a background noise signal of the current in-vehicle environment and determining the gain difference spectrum of the background noise signal relative to a reference noise signal of a quiet environment; performing track-by-track processing on the currently playing media audio signal to obtain multiple independent audio tracks corresponding to different frequency ranges; for each independent audio track, determining a corresponding gain adjustment amount from the gain difference spectrum based on its frequency range, and applying a corresponding gain adjustment to the independent audio track when the gain adjustment amount meets a gain condition; merging the signals of each independent audio track to output as a processed media audio signal, thereby improving speech clarity and music listening experience while significantly improving the accuracy and naturalness of audio equalization.

The application provides a three-dimensional virtual surround sound generation method and generation system, and relates to the field of surround sound. The application adopts an excellent structure of a howling elimination technology to eliminate howling, enhance spatial positioning and speech clarity. Reflection sound is constructed by infinite N-level echo simulation to construct a surround sound channel, so that the generated surround sound has more distant background sound, thereby making the virtual surround sound have strong spatial sense, distance sense, diffusivity and surrounding sense, rather than just positioning sense. A post sound channel is constructed by inversely superimposing the delayed signal on the direct signal, so that the spatial sense of the surround sound is obviously enhanced, and the sound seems to come from all directions. The original sound bass is preserved by separation technology, and the virtual sound in each direction is freely controlled, thereby controlling the sound intensity, tone brightness and tone softness.

This utility model belongs to the field of hearing aid technology and discloses a behind-the-ear hearing aid, including a hearing aid suspension shell and an amplifier, receiver, and battery disposed inside the hearing aid suspension shell. Multiple miniature directional microphones are embedded on the front, top, and rear sides of the hearing aid suspension shell, and multiple independent acoustic channels are provided inside the hearing aid suspension shell. This utility model enhances the ability to pick up target speech from the front by embedding integrated miniature directional microphones on the front, top, and rear sides of the hearing aid shell in an asymmetrical spatial arrangement, and by providing multiple independent acoustic channels inside the hearing aid shell. Each independent acoustic channel is equipped with an electrically adjustable miniature acoustic damper, which can physically reduce noise, suppress side and rear noise, wind noise, and interference in specific frequency bands, and improve the basic signal-to-noise ratio. The independent acoustic channels can physically isolate the sound signals of each channel, improving speech clarity.

This invention relates to the field of electronic microphone audio signal processing technology, and provides an electronic microphone audio signal processing system and method, including a server connected to a signal acquisition module, a digital signal processing module, a digital-to-analog converter module, and an output module. The signal acquisition module includes a sound sensor, an analog front-end, and an analog-to-digital converter. The sound sensor uses a MEMS microphone array to convert changes in sound wave pressure into analog electrical signals. The analog front-end internally includes a preamplifier, a bias circuit, and an anti-aliasing filter. The preamplifier amplifies the electrical signal output by the microphone. The anti-aliasing filter filters out high-frequency components above the Nyquist frequency before analog-to-digital conversion, preventing aliasing distortion. This invention can process digital audio signals in real time and accurately, effectively eliminating echo, suppressing noise, stabilizing volume, and improving speech clarity and sound quality, greatly improving the audio signal processing quality of electronic microphones.

The invention belongs to the technical field of medical education, and discloses a method and a system for evaluating comprehensive clinical competency of medical students, video and audio data in an interaction process of the medical students and virtual patients are collected, a response text is obtained in combination with a voice recognition technology, and the comprehensive clinical competency of the medical students is evaluated through a retrieval enhancement generation technology. Performing semantic alignment on the response text of the medical student and the authoritative medical knowledge base; the method comprises the steps of evaluating language definition, common situation performance, attitude performance, eye contact rate and expression activeness of medical students on the basis of multi-modal data, finally, performing weighted fusion on various quantitative indexes to obtain a comprehensive score, generating a feedback report, and performing encrypted storage on original data; therefore, the problems of mutual separation of professional knowledge and clinical communication ability assessment, strong assessment subjectivity, lack of objective quantitative indexes and insufficient non-language communication assessment in medical student assessment in a current medical education system are solved.

The invention relates to an audio processing method, device and system, electronic equipment and a storage medium, and the method mainly comprises the steps: obtaining a first audio signal which is an audio signal obtained after an original audio signal is subjected to primary noise reduction and amplification; performing first residual noise detection on the first audio signal to obtain first detection result information associated with the first residual noise detection; under the condition that the first detection result information meets a preset secondary noise reduction and amplification starting condition, performing secondary noise reduction and amplification processing to obtain a second audio signal; and outputting the second audio signal. According to the technical scheme, whether secondary noise reduction amplification is started or not is determined through residual noise detection of the audio signal after primary noise reduction amplification, adaptive noise reduction amplification of the audio signal collected in a complex environment is achieved, and the voice definition degree of the audio signal collected in various environments can be improved.

The invention discloses a voltage-sharing non-inductive sound amplification and omnidirectional microphone integrated conference system, which relates to the technical field of conference audio, comprises a distributed loudspeaker array, an omnidirectional microphone array and a signal processing unit, and is characterized by further comprising a structure sound feedback suppression subsystem, a structure sound amplification subsystem and a structure sound amplification subsystem, the structural sound feedback suppression subsystem comprises a vibration sensing module, a self-adaptive filtering module, a signal synthesis module and a feedback analysis module; the vibration sensing module is rigidly installed inside the housing of the omnidirectional microphone unit or is directly coupled with the installation structure of the microphone array. According to the voltage-sharing non-inductive sound amplification and omnidirectional microphone integrated conference system, through a multi-stage cooperative active suppression mechanism, the problem of sound feedback caused by vibration conducted by a physical structure in a highly integrated conference system is effectively solved, the voice definition and the system sound amplification gain are improved, and therefore high-quality non-inductive sound amplification and pickup experience is achieved.