16 results about "Digital hearing aid" patented technology

A system and associated processes include a left and right eyewear stem, each including a microphone array comprising a plurality of microphones, and a digital hearing aid that receives content from the microphone array and extracts a desired signal from the content, the digital hearing aid applying frequency-dependent gain to the desired signal to compensate for a user's hearing loss profile. The system further includes processes that receive the desired signal modified with the frequency-dependent gains to acoustically render the desired modified signal proximate to the ear of the user without anything physical being placed within an entrance to an ear canal. A rechargeable battery may be included, along with a front face of the eyewear configured to hold a pair of eyewear lenses, where the front face lacks an electrical conductor connecting the right and left eyewear stem.

The invention provides an environmental sound gain method based on a two-dimensional sound source positioning technology, which is applied to a digital hearing aid, and comprises the following steps: calculating sound information collected by the digital hearing aid based on the two-dimensional sound source positioning technology to obtain azimuth information of sound sources of different types of information; caching the azimuth information of the sound sources of different types of information, and judging the motion state of the sound sources relative to the digital hearing aid according to the change of the azimuth information of the sound sources of the same type of information; if the sound source is in a moving state relative to the digital hearing aid, performing dynamic high-gain-intensity amplification processing on a sound signal corresponding to the sound source; through independent processing of the environment sound, the situation that important voice information is covered by background sound is effectively avoided, differential amplification can be performed on a static sound source and a mobile sound source according to different motion states of the sound source relative to the digital hearing aid, and the identification degree of the mobile sound source can be improved.

The application relates to the technical field of hearing aids, in particular to a digital hearing aid automatic gain control method and system, which comprises the following steps: collecting a sound signal through a built-in microphone of a hearing aid; obtaining a mel spectrogram of the sound signal; dividing each frame of the mel spectrogram into mel frequency bands; determining the energy concentration degree of each mel frequency band; determining the noise saliency of each frame of the mel spectrogram; performing blind source separation on the collected sound signal by using a natural gradient algorithm; obtaining the separation difference degree of each iteration by combining the noise saliency of all frames of the mel spectrogram, the similarity degree between the target signal and the noise signal obtained after each iteration separation, and the similarity degree between the collected sound signal and the separated signal, so as to determine the step length of the next iteration; and performing automatic gain control on the target signal obtained through the blind source separation. Therefore, the hearing aid frequency interference can be reduced, and the user's auditory experience can be optimized.

The application discloses a kind of hearing visual multi-modal neural regulation wearable system and its regulation method, including acoustic stimulation instrument, digital hearing aid and LED visual light stimulation glasses three parts, wherein acoustic stimulation instrument is central control unit, built-in rhythm signal generation, modulation and synthesis, digital-analog conversion and Bluetooth communication module, realize sound-light synchronous control by unified clock synchronization module, digital hearing aid is used for voice enhancement and hearing compensation, rhythm sound signal output is received simultaneously, LED visual light stimulation glasses generate programmable frequency and phase difference flicker signal by PWM drive, system can output 30-50 Hz range gamma rhythm sound-light stimulation, realize the cross-modal neural regulation of auditory and visual pathway, by physiological signal feedback and App closed-loop management, system can dynamically adjust stimulation parameter, realize individualized neural regulation and safety protection, the system structure is compact, high synchronization accuracy, with hearing compensation, neural regulation treatment and remote management function.

The invention provides a method and a device for optimizing a hearing aid environment, the method and the device are applied to a digital hearing aid, and the method comprises the following steps: acquiring sound information around the digital hearing aid through audio acquisition equipment arranged in an array, and carrying out differential filtering processing on the sound information to obtain a plurality of pieces of audio information; judging the position of a sound source according to the time difference of acquiring the same audio information by different audio acquisition devices; different audio information is amplified differentially according to the position of the sound source position relative to a preset communication range, the sound source position is acquired by means of an audio acquisition device array, in the area within the preset communication range, the sound loudness is increased along with the increase of the distance from the hearing aid, and in the area outside the preset communication range, the sound loudness is increased along with the increase of the distance from the hearing aid. The sound loudness is weakened along with the increase of the distance with the hearing aid, the influence of operation noise, wind noise and friction noise of the hearing aid is weakened to the maximum extent, the filtering burden of hearing aid is reduced, and the rigid gain design of a traditional hearing aid is abandoned.

This invention patent provides a hearing aid method and device based on Bluetooth dual-mode audio function, applied to digital hearing aids. The method includes: connecting the digital hearing aid to at least one external audio device via Bluetooth, the external audio device including at least one audio software; the digital hearing aid acquiring sound signals transmitted via Bluetooth from the external audio device and processing the sound signals into Bluetooth output signals; the digital hearing aid acquiring sound signals from the external environment other than the external audio signals and noise signals, and synthesizing the acquired sound signals with the sound signals transmitted via Bluetooth from the external audio device to obtain integrated output information whose components are indistinguishable from the sound signals in the external environment. On the one hand, the external audio device can also privately play the same audio content within the digital hearing aid while playing external sounds normally.

The application provides a digital hearing aid intelligent fitting method and system of a neural network, and the method comprises the following steps: collecting fitting big data, inputting the fitting big data into a deep neural network model to obtain a basic fitting model through training; obtaining the weight parameters, learning rate and weight decay coefficient of the basic fitting model as a reinforcement learning strategy; inputting a reinforcement learning strategy of a random probability distribution into the current basic fitting model to output a corresponding reinforcement learning prediction value, and calculating the error between the prediction value and an actual value; configuring the reinforcement learning reward and punishment rules, calculating the feature eligibility and eligibility trace of the current reinforcement learning, calculating the corresponding update strategy according to the error between the prediction value and the actual value, the reward and punishment rules, the feature eligibility and the eligibility trace, and executing the next reinforcement learning action according to the update strategy until the current strategy meets the constraint condition.

A system and associated processes include a left and right eyewear stem, each including a microphone array comprising a plurality of microphones, and a digital hearing aid that receives content from the microphone array and extracts a desired signal from the content, the digital hearing aid applying frequency-dependent gain to the desired signal to compensate for a user's hearing loss profile. The system further includes processes that receive the desired signal modified with the frequency-dependent gains to acoustically render the desired modified signal proximate to the ear of the user without anything physical being placed within an entrance to an ear canal. A rechargeable battery may be included, along with a front face of the eyewear configured to hold a pair of eyewear lenses, where the front face lacks an electrical conductor connecting the right and left eyewear stem.

The application discloses a digital hearing aid self-sound detection adjusting method based on air-bone conduction fusion, which comprises the following steps: signal acquisition and pretreatment; air conduction signal strength and frequency domain calculation; bone conduction signal strength and frequency domain calculation; gain generation and signal output. By introducing a bone conduction vibration sensor, the signal amplitude of the wearer's own voice is reduced when the wearer speaks, and the energy is compressed. Meanwhile, when the input signal is only the voice of others in the environment, the signal amplitude will not be reduced, and the voice of others will not be inhibited, so that the energy of the wearer's own voice is adjusted to a reasonable level, the hearing feeling of the wearer when speaking is improved, and compared with the traditional wide dynamic range compression algorithm in the digital hearing aid, the self-sound detection and inhibition effect is better.

The invention relates to a low quiescent current bone conduction type hearing aid circuit and a control method. The hearing aid circuit comprises a digital hearing aid module, a charging management module, a power amplification module, a battery and a bone vibrator. The digital hearing aid module is used for outputting a corresponding audio signal, the audio output end of the digital hearing aid module is connected with the audio input end of the power amplification module, and the audio output end of the power amplification module is connected with the bone vibrator so as to drive the bone vibrator to execute a corresponding vibration action based on the audio signal; the control signal output end of the digital hearing aid module is connected with the control signal input end of the power amplification module, and when it is judged that the battery is in the charging state according to the voltage signal, the digital hearing aid module controls the power amplification module to stop outputting the audio signal to the bone vibrator. The completeness of basic functions of the bone conduction hearing aid is guaranteed, active suppression of a high-power-consumption link is achieved, and the problems that an existing bone conduction hearing aid is frequently charged and poor in use continuity due to the fact that quiescent current is too large are solved.

This invention patent provides a dynamic hearing aid method and device for digital hearing aids. The method includes: acquiring an original sound signal from the environment where the hearing aid is located; performing a first filtering and amplification process on the original sound signal to obtain a first pre-output sound signal; analyzing and processing the first pre-output sound signal to obtain a set of frequency information of the first pre-output sound signal; if any frequency information in the first pre-output sound signal is located within a target frequency set, by determining whether the first pre-output sound signal contains a target frequency, the first pre-output sound signal can be played directly when the target frequency is contained, allowing the user to hear the target sound without interference in noisy environments, and reducing the computational load and response speed of the digital hearing aid in noisy environments; generating a second pre-output sound signal when the target frequency is not contained, and playing the second pre-output sound signal.

This invention patent provides a dynamic noise reduction method and device for digital hearing aids, relating to the field of hearing aids and applied to digital hearing aids. The method includes: acquiring ambient sound around the digital hearing aid and converting the ambient sound into an acoustic signal; analyzing the frequency of the acoustic signal through Fourier transform to obtain multiple synthesized signal types and loudness information of the synthesized signal types; switching the signal-to-noise ratio (SNR) program according to the differences in loudness information of the synthesized signal types and the discreteness of the loudness information of the synthesized signal types. By decomposing and analyzing the acoustic signal, the synthesized signal types and their loudness information can be obtained. The SNR is reduced when any synthesized signal type is too loud or when there is a large loudness difference between synthesized signal types, and the SNR is increased when the loudness difference between synthesized signal types is not large. This can reduce sound loss caused by the filtering process while ensuring hearing effect and improve the fidelity of the hearing aid.

This invention discloses a self-sound detection and adjustment method for digital hearing aids based on air-bone conduction fusion, comprising the following steps: signal acquisition and preprocessing; air conduction signal intensity and frequency domain calculation; bone conduction signal intensity and frequency domain calculation; gain generation and signal output. By introducing a bone conduction vibration sensor, the signal amplitude of the wearer's own voice is reduced and the energy is compressed when the wearer speaks. At the same time, when the input signal only contains the voices of others in the environment, the signal amplitude is not reduced and the voices of others are not suppressed. This achieves the adjustment of the energy of the wearer's own voice to a reasonable level, improving the hearing experience when the wearer speaks. Compared with the traditional wide dynamic range compression algorithm in digital hearing aids, it can provide better self-sound detection and suppression effects.

1. Name of the product in this design: In-ear digital hearing aid charging case (CZ-R601). 2. Purpose of this design: For storing hearing aids and charging hearing aids. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

This invention patent provides a speech enhancement method and apparatus for a multi-mode digital hearing aid, comprising: acquiring natural sound information of the external environment and performing noise reduction processing on the natural sound information to obtain comprehensive sound information; analyzing the comprehensive sound information to obtain a set of sound source information, wherein the sound source information includes frequency information, magnitude information, orientation information, and distance information; selecting the most suitable sound source information as the main sound source based on multiple gain methods, wherein different gain methods have different weights; and differentially amplifying and outputting the main sound source and other sound sources according to a preset gain method, wherein the frequency information, magnitude information, orientation information, and distance information of different sound sources can be obtained based on the environmental sound waveform diagram, acoustic model, and time difference of acquiring the same environmental sound, and different gain methods are used to select the gain sound source, and the gain sound source selected most frequently is used as the main sound source for output.

The application relates to the technical field of hearing aids, in particular to a digital hearing aid howling suppression method and system, which comprises the following steps: determining an energy distribution characteristic value; determining the noise possibility of each to-be-processed signal based on the distribution of all high-energy values and derived values of each to-be-processed signal and a preset number of to-be-processed signals before the to-be-processed signal in a frequency domain and the rate at which each peak value in each to-be-processed signal drops to the adjacent next valley value, and determining an over-reduction index in combination with the energy distribution characteristic value; and suppressing howling noise in a speech signal by using a spectral subtraction method based on the over-reduction index. The application dynamically analyzes the frequency domain energy distribution and the time domain oscillation characteristics, adaptively adjusts the over-reduction index of the spectral subtraction method, solves the problem of poor adaptability of a traditional howling suppression method, and improves the howling suppression effect of a digital hearing aid in a complex acoustic environment.