Sound filtering method and system of air conduction hearing aid

Abstract

The invention discloses a sound filtering method and system for an air conduction hearing aid, and the system comprises a receiving module which receives a sound wave signal in an external environment through the receiving module, converts the sound wave signal into a digital signal, and a sound filtering module which filters the converted digital signal through the sound filtering module, and sets a sound receiving interval. According to the method, firstly, a converted digital signal is filtered through a sound filtering module, a filtering interval for sound receiving is set, the lowermost end of the interval is set according to the sound range which can be heard by human ears in the normal environment, and the uppermost end of the interval is set according to the sound wave frequency which can be clearly heard by a wearer; the audio signals in the filtering interval are input into the processing module to be processed, the sound waves exceeding the frequency do not need to be amplified, and the wearer can normally receive the sound waves through the ears of the wearer, so that the sound waves exceeding the frequency are directly input into the playing equipment to be played, and the wearer can clearly hear the sound waves.

Description

Technical Field

[0001] This invention discloses a sound filtering method and system for air conduction hearing aids, belonging to the field of hearing aids. Background Technology

[0002] An air conduction hearing aid is a type of hearing aid that works by using the principle of sound transmission through the air. It mainly consists of a miniature microphone, signal amplification and processing circuit, miniature earphone, shell, switch, and sound tube. The working principle of an air conduction hearing aid is to first collect sound through the microphone, then process the collected sound through the digital chip in the hearing aid by noise reduction, amplification, etc., and finally transmit the processed sound to the auditory nerve through the air conduction path.

[0003] Air conduction hearing aids are an effective hearing assistance tool that helps people with hearing loss improve their hearing by amplifying sound signals. However, when amplifying sound signals, hearing aids need to consider whether the wearer needs to amplify all the sounds in the surrounding environment. Wearers of air conduction hearing aids only have hearing loss, but still have a certain range of hearing. If all the sounds are amplified, some louder sounds will become noise, which will damage the wearer's hearing. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the problem that physiological tinnitus can be identified without professional tinnitus detection equipment in the prior art, and that the use of tinnitus detection equipment for detection would cause a waste of medical resources.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A method for filtering sound in an air conduction hearing aid includes the following steps: S1. First, the receiving module receives sound wave signals from the external environment, and then converts the sound wave signals into digital signals; S2. The converted digital signal is filtered through the sound filtering module. The sound receiving filtering range is set. The bottom of this range is set according to the sound range that the human ear can hear in a normal environment, and the top of this range is set according to the sound wave frequency that the wearer can hear clearly. The audio signal in the filtering range is processed by the input processing module. S3. The processing module amplifies and adjusts the audio that the hearing aid needs to play. The processing module can adjust the decibels and frequency of the received audio to make the audio signal play clearly. S4. The received digital audio is converted into a sound wave signal by the playback module and then played.

[0006] As a preferred technical solution of the present invention, the filtering interval in step S2 is set according to the specific needs of the wearer. First, the minimum audio frequency that the wearer can clearly hear is detected, and then this is set as the maximum frequency of the filtering interval. The minimum acceptable sound wave signal in the 10M range around a normal human ear is detected, and then the frequency of this sound wave signal is calculated. This frequency is set as the minimum frequency of the filtering range. The communication distance of a normal person will not be greater than 10M. Sound waves beyond this distance have little impact on the wearer and are not processed here.

[0007] As a preferred technical solution of the present invention, in step S2, the sound filtering module will directly input audio signals with frequencies exceeding the filtering range into the playback module for playback, and will directly eliminate audio signals with frequencies below the filtering range. Audio signals with frequencies exceeding the filtering range can be received normally by the wearer without amplification and can be played directly without a device. Audio signals with frequencies below the filtering range will not affect the wearer's daily communication and can be directly shielded.

[0008] As a preferred embodiment of the present invention, the filtering module in step S2 can be configured with a separate filtering library, which can be used to record noises commonly heard in daily life. The filtering module can directly eliminate audio signals that are identical to those in the filtering library. An air conduction hearing aid sound filtering system includes the following modules: The receiving module receives sound wave signals from the external environment and then converts the sound wave signals into digital signals. The sound filtering module filters the converted digital signal and sets the sound reception range. The lower end of this range is set according to the sound range that the human ear can hear in a normal environment, and the upper end of this range is set according to the sound wave frequency that the wearer can hear clearly. The processing module amplifies and adjusts the audio that the hearing aid needs to play. The processing module can adjust the decibels and frequencies of the received audio to make the audio signal play clearly. The playback module converts the received digital audio into sound wave signals and then plays them.

[0009] The beneficial effects achieved by this invention are as follows: This invention provides a sound filtering method and system for air conduction hearing aids. This method filters the converted digital signal through a sound filtering module and sets a sound reception filtering range. The lower end of this range is set according to the range of sounds that the human ear can hear in a normal environment, and the upper end of this range is set according to the sound wave frequency that the wearer can hear clearly. The audio signal within the filtering range is processed by the input processing module. Sound waves exceeding this frequency do not need to be amplified, and the wearer can also receive them normally through their own ears. Therefore, sound waves exceeding this frequency can be directly input into the playback device for playback, allowing the wearer to hear them clearly. Attached Figure Description

[0010] Figure 1 This is a block diagram of the present invention; Figure 2 This is a flowchart of the present invention. Detailed Implementation

[0011] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0012] Please see Figure 1-2 This invention provides a technical solution: a method for filtering sound in an air conduction hearing aid, comprising the following steps: S1. First, the receiving module receives sound wave signals from the external environment, and then converts the sound wave signals into digital signals; S2. The converted digital signal is filtered through the sound filtering module. The sound receiving filtering range is set. The bottom of this range is set according to the sound range that the human ear can hear in a normal environment, and the top of this range is set according to the sound wave frequency that the wearer can hear clearly. The audio signal in the filtering range is processed by the input processing module. Hearing aids require internal filters to filter sound. A filter is a common sound filtering method that allows low-frequency signals to pass through while blocking high-frequency signals. These filters are typically used to remove high-frequency noise from audio signals to improve clarity and quality. Existing filters can be categorized as follows: A high-pass filter allows high frequencies to pass through while attenuating low frequencies. A low-pass filter allows low frequencies to pass through while attenuating high frequencies. A bandpass filter allows only frequencies within a certain frequency band to pass through. A band-stop filter attenuates frequencies only within a certain frequency band; this type of filter is also known as a notch filter. A full-pass filter allows all frequencies in the spectrum to pass through, but it modifies the phase of the output. These filters are type-restricted and can only filter sounds of the same type individually.

[0013] S3. The processing module amplifies and adjusts the audio that the hearing aid needs to play. The processing module can adjust the decibels and frequency of the received audio to make the audio signal play clearly. S4. The received digital audio is converted into a sound wave signal by the playback module and then played.

[0014] In step S2, the filtering range is set according to the wearer's specific needs. First, the minimum audio frequency that the wearer can clearly hear is detected, and then this is set as the maximum frequency of the filtering range. The minimum acceptable sound wave signal in the 10M range around a normal human ear is detected, and then the frequency of this sound wave signal is calculated. This frequency is set as the minimum frequency of the filtering range. The communication distance of a normal person will not be greater than 10M. Sound waves beyond this distance have little impact on the wearer and are not processed here.

[0015] In step S2, during the filtering process, the audio filtering module will directly input audio signals with frequencies exceeding the filtering range into the playback module for playback, and will directly eliminate audio signals with frequencies below the filtering range. Audio signals with frequencies exceeding the filtering range can be received normally by the wearer without amplification and can be played directly without a device. Audio signals with frequencies below the filtering range will not affect the wearer's daily communication and can be directly shielded.

[0016] In step S2, the filtering module can set up a separate filter library, which can record some noises that people often hear in daily life. The filtering module can directly eliminate audio signals that are the same as those in the filter library. In audio processing, sound filtering techniques can be used to extract human voices, remove background noise, improve sound quality, and enhance speech signals in specific frequency bands. For example, in speech recognition systems, sound filtering can help the system recognize speech content more accurately, maintaining a high recognition accuracy even in noisy environments.

[0017] An air conduction hearing aid sound filtering system includes the following modules: The receiving module receives sound wave signals from the external environment and then converts the sound wave signals into digital signals. The sound filtering module filters the converted digital signal and sets the sound reception range. The lower end of this range is set according to the sound range that the human ear can hear in a normal environment, and the upper end of this range is set according to the sound wave frequency that the wearer can hear clearly. The processing module amplifies and adjusts the audio that the hearing aid needs to play. The processing module can adjust the decibels and frequencies of the received audio to make the audio signal play clearly. The playback module converts the received digital audio into sound wave signals and then plays them.

[0018] Specifically, this method first receives sound wave signals from the external environment through a receiving module, then converts the sound wave signals into digital signals. A filtering module then filters the converted digital signals, setting a sound reception filtering range. The lower end of this range is set according to the range of sounds audible to the human ear in a normal environment, while the upper end is set according to the sound wave frequencies that the wearer can clearly hear. Audio signals within the filtering range are input to a processing module for processing. The processing module amplifies and adjusts the audio to be played by the hearing aid. The processing module can adjust the decibels and frequencies of the received audio to ensure clear playback. Finally, a playback module converts the received digital audio into sound wave signals for playback.

[0019] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for filtering sound in an air conduction hearing aid, characterized in that, Includes the following steps: S1. First, the receiving module receives sound wave signals from the external environment, and then converts the sound wave signals into digital signals; S2. The converted digital signal is filtered through the sound filtering module. The sound receiving filtering range is set. The bottom of this range is set according to the sound range that the human ear can hear in a normal environment, and the top of this range is set according to the sound wave frequency that the wearer can hear clearly. The audio signal in the filtering range is processed by the input processing module. S3. The processing module amplifies and adjusts the audio that the hearing aid needs to play. The processing module can adjust the decibels and frequency of the received audio to make the audio signal play clearly. S4. The received digital audio is converted into a sound wave signal by the playback module and then played.

2. The air conduction hearing aid sound filtering method according to claim 1, characterized in that: In step S2, the filtering range is set according to the wearer's specific needs. First, the minimum audio frequency that the wearer can clearly hear is detected, and then this is set as the maximum frequency of the filtering range. The minimum acceptable sound wave signal in the 10M range around a normal human ear is detected, and then the frequency of this sound wave signal is calculated. This frequency is set as the minimum frequency of the filtering range. The communication distance of a normal person will not be greater than 10M. Sound waves beyond this distance have little impact on the wearer and are not processed here.

3. The air conduction hearing aid sound filtering method according to claim 1, characterized in that: In step S2, during the filtering process, the audio filtering module will directly input audio signals with frequencies exceeding the filtering range into the playback module for playback, and will directly eliminate audio signals with frequencies below the filtering range. Audio signals with frequencies exceeding the filtering range can be received normally by the wearer without amplification and can be played directly without a device. Audio signals with frequencies below the filtering range will not affect the wearer's daily communication and can be directly shielded.

4. The air conduction hearing aid sound filtering method according to claim 1, characterized in that: In step S2, the filtering module can set up a separate filtering library, which can record some noises that people often hear in daily life. The filtering module can directly eliminate audio signals that are the same as those in the filtering library.

5. A sound filtering system for an air conduction hearing aid based on claims 1-4, characterized in that: Includes the following modules: The receiving module receives sound wave signals from the external environment and then converts the sound wave signals into digital signals. The sound filtering module filters the converted digital signal and sets the sound reception range. The lower end of this range is set according to the sound range that the human ear can hear in a normal environment, and the upper end of this range is set according to the sound wave frequency that the wearer can hear clearly. The processing module amplifies and adjusts the audio that the hearing aid needs to play. The processing module can adjust the decibels and frequencies of the received audio to make the audio signal play clearly. The playback module converts the received digital audio into sound wave signals and then plays them.

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