Hearing aid multichannel comprehensive processing method

Abstract

The invention discloses a multichannel comprehensive processing method for a hearing aid, which comprises the following steps of: receiving audios through four groups of microphones of a signal receiving module, then converting the received four groups of audios into digital signals, and independently numbering each group of digital signals. When the four groups of digital signals have four groups of same signal frequency bands, the four groups of signal segments are picked out from the original digital signals for comparison, and when the same signal frequency bands of the four groups of digital signals are lower than the four groups of digital signals, the same signal frequency bands are deleted, and the sound fluctuation ranges of the same four groups of signal segments are compared; four groups of comparison digital signal segments with the largest fluctuation range are selected according to the sound fluctuation range, the digital signal segments are reserved, repeated audios are deleted from the reserved parts, noise in a single direction is deleted at the same time, and the multi-channel audios are expressed more clearly.

Description

Technical Field

[0001] This invention discloses a multi-channel integrated processing method for hearing aids, belonging to the field of hearing aids. Background Technology

[0002] A hearing aid is an electronic device used to help people with hearing loss improve their hearing by amplifying sound signals, allowing users to hear sounds more clearly. The working principle of a hearing aid involves the collection, amplification, processing, and output of sound. During the amplification process, the hearing aid may include signal processing functions such as noise reduction and frequency adjustment to improve the clarity and audibility of the sound.

[0003] Existing hearing aids have multiple channels. Multichannel hearing aids typically incorporate technologies such as directionality, speech enhancement, and noise suppression. These technologies enable hearing aids to distinguish between noise and speech within the channels and separate the speech signal from the noise, allowing users to hear more clearly. However, multichannel hearing aids amplify and play the audio signals received by the microphones of all channels. This can cause some speech to overlap and be affected by noise from different directions, resulting in audio distortion. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the existing hearing aids, with their multi-channel overlapping audio components, are affected by noise from different directions, which leads to audio distortion.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A method for multi-channel integrated processing of hearing aids includes the following steps: S1. Audio is received through four microphones of the signal receiving module, and then the four received audio signals are converted into digital signals, with each digital signal being numbered separately. S2. The four sets of digital signals are analyzed and compared through the channel analysis module. When there are four sets of the same signal frequency bands in the four sets of digital signals, the four sets of signal segments are extracted from the original digital signals for comparison. When there are fewer than four sets of the same signal frequency bands in the four sets of digital signals, these same signal frequency bands are deleted. The sound fluctuation range of the four sets of the same signal segments is compared. Based on the sound fluctuation range, the segment with the largest fluctuation range among the four sets of compared digital signal segments is selected and retained. S3. The channel selection module selects all digital signals. Each digital signal segment retained after comparison is selected by the four channel groups according to the original number, so that the retained digital signal segment corresponds to one channel. The audio processing module sorts all retained signal segments according to the reception time, and amplifies the fluctuation range of all signal segments according to an appropriate ratio. Finally, all signal segments are input into the playback module in sequence. S4. The playback module converts all received audio signal segments into sound wave signals, and then inputs them into the speakers of different channels in sequence according to the channel numbers marked on the signal segments for playback.

[0006] As a preferred technical solution of the present invention, in step S2, the audio channel analysis module extracts audio with gaps between the beginning and end for comparative analysis. During the analysis, the part with the largest fluctuation range is marked. When the largest fluctuation range in the same audio segment is located in multiple audio signals, the signal segment is further segmented according to the fluctuation range change for comparative analysis.

[0007] As a preferred technical solution of the present invention, if the number of identical frequency band signals obtained by the channel analysis module in step S2 is less than four, it means that at least one of the four microphones has not received sound waves. If the same four sets of signals are not analyzed for a long time, it can be determined that the microphone of the hearing aid is damaged.

[0008] As a preferred embodiment of the present invention, in step S3, the channel selection module numbers the channels according to the original microphone number, and each audio signal has a matching channel number.

[0009] A self-echo cancellation system for a hearing aid, comprising the following modules: The signal receiving module receives audio through four sets of microphones, then converts the four sets of audio into digital signals, and each set of digital signals is individually numbered. The channel analysis module analyzes and compares four sets of digital signals, compares the same signal segments in the four sets of signals, compares the sound fluctuation range of the same signal segments, and selects the segment with the largest fluctuation range among the four sets of compared digital signal segments and retains this segment of digital signal. The channel selection module selects all digital signals. Each digital signal segment retained after comparison is selected by the four channel groups according to its original number, so that the retained digital signal segment corresponds to one channel. The audio processing module sorts all the retained signal segments according to their reception time, amplifies the fluctuation range of all signal segments at an appropriate ratio, and finally inputs all the signal segments into the playback module in sequence. The playback module converts all received audio signal segments into sound wave signals, and then inputs them sequentially into different channel speakers according to the channel numbers labeled on the signal segments for playback.

[0010] The beneficial effects achieved by this invention are as follows: This invention provides a multi-channel integrated processing method for hearing aids. This method analyzes and compares four sets of digital signals through a channel analysis module. When four sets of digital signals have four identical signal frequency bands, the four signal segments are extracted from the original digital signals for comparison. When the number of identical signal frequency bands in the four sets of digital signals is less than four, these identical signal frequency bands are deleted. The sound fluctuation range of the four identical signal segments is compared, and the segment with the largest fluctuation range among the four sets of compared digital signal segments is selected and retained. The retained part deletes repetitive audio and removes noise in one direction, making the multi-channel audio performance clearer. Attached Figure Description

[0011] Figure 1 This is a block diagram of the present invention; Figure 2 This is a flowchart of the present invention. Detailed Implementation

[0012] 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.

[0013] Please see Figure 1-2 This invention provides a technical solution: a multi-channel integrated processing method for hearing aids, comprising the following steps: S1. Audio is received through four microphones of the signal receiving module, and then the four received audio signals are converted into digital signals, with each digital signal being numbered separately. The signal receiving module is a crucial component of a hearing aid system, responsible for capturing ambient sound and converting it into electrical signals. This module typically includes a microphone, a preamplifier, and signal processing circuitry. The microphone first converts sound waves into electrical signals, and the preamplifier then amplifies these signals so that the signal processing circuitry can process them effectively. The signal processing circuitry may include functions such as noise suppression, gain control, and frequency response adjustment to optimize the sound signal and ensure that the user can clearly hear the amplified sound. S2. The four sets of digital signals are analyzed and compared through the channel analysis module. When there are four sets of the same signal frequency bands in the four sets of digital signals, the four sets of signal segments are extracted from the original digital signals for comparison. When there are fewer than four sets of the same signal frequency bands in the four sets of digital signals, these same signal frequency bands are deleted. The sound fluctuation range of the four sets of the same signal segments is compared. Based on the sound fluctuation range, the segment with the largest fluctuation range among the four sets of compared digital signal segments is selected and retained. The channel analysis module is mainly used to distinguish the direction of the received audio. It receives sound waves from the corresponding direction through microphones corresponding to the channel. The microphone closest to the direction of sound emission receives the largest range of audio fluctuation frequencies. In this way, the direction of audio emission can be calculated by comparing the fluctuation range of the channel audio. S3. The channel selection module selects all digital signals. Each digital signal segment retained after comparison is selected by the four channel groups according to the original number, so that the retained digital signal segment corresponds to one channel. The audio processing module sorts all retained signal segments according to the reception time, and amplifies the fluctuation range of all signal segments according to an appropriate ratio. Finally, all signal segments are input into the playback module in sequence. S4. The playback module converts all received audio signal segments into sound wave signals, and then inputs them into the speakers of different channels in sequence according to the channel numbers marked on the signal segments for playback.

[0014] As a preferred technical solution of the present invention, in step S2, the audio channel analysis module extracts audio with gaps between the beginning and end for comparative analysis. During the analysis, the part with the largest fluctuation range is marked. When the largest fluctuation range in the same audio segment is located in multiple audio signals, the signal segment is further segmented according to the fluctuation range change for comparative analysis.

[0015] As a preferred technical solution of the present invention, if the number of identical frequency band signals obtained by the channel analysis module in step S2 is less than four, it means that at least one of the four microphones has not received sound waves. If the same four sets of signals are not analyzed for a long time, it can be determined that the microphone of the hearing aid is damaged.

[0016] As a preferred embodiment of the present invention, in step S3, the channel selection module numbers the channels according to the original microphone number, and each audio signal has a matching channel number.

[0017] A self-echo cancellation system for a hearing aid, comprising the following modules: The signal receiving module receives audio through four sets of microphones, then converts the four sets of audio into digital signals, and each set of digital signals is individually numbered. The channel analysis module analyzes and compares four sets of digital signals, compares the same signal segments in the four sets of signals, compares the sound fluctuation range of the same signal segments, and selects the segment with the largest fluctuation range among the four sets of compared digital signal segments and retains this segment of digital signal. The channel selection module selects all digital signals. Each digital signal segment retained after comparison is selected by the four channel groups according to its original number, so that the retained digital signal segment corresponds to one channel. The audio processing module sorts all the retained signal segments according to their reception time, amplifies the fluctuation range of all signal segments at an appropriate ratio, and finally inputs all the signal segments into the playback module in sequence. The playback module converts all received audio signal segments into sound wave signals, and then inputs them sequentially into different channel speakers according to the channel numbers labeled on the signal segments for playback.

[0018] Specifically, this method first receives audio through four microphones in the signal receiving module, then converts the four audio signals into digital signals. Each digital signal is individually numbered. The channel analysis module analyzes and compares the four digital signals. When four sets of digital signals share the same frequency band, these four signal segments are extracted from the original digital signals for comparison. If fewer than four sets of the same frequency band exist, these same frequency bands are deleted. The sound fluctuation range of the four identical signal segments is compared, and the segment with the largest fluctuation range is selected and retained. The digital signal is processed by a channel selection module. Each segment is selected from the remaining segments after comparison. These segments are then selected by the four channel groups according to their original numbers, ensuring that each retained segment corresponds to a channel. The audio processing module sorts all retained segments according to their reception time and amplifies the fluctuation range of each segment at an appropriate ratio. Finally, all segments are input into the playback module in sequence. The playback module converts all received audio segments into sound wave signals and then inputs them into the speakers of different channels in sequence according to the channel numbers marked on the segments 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 multi-channel integrated processing of hearing aids, characterized in that, Includes the following steps: S1. Audio is received through four microphones of the signal receiving module, and then the four received audio signals are converted into digital signals, with each digital signal being numbered separately. S2. The four sets of digital signals are analyzed and compared through the channel analysis module. When there are four sets of the same signal frequency bands in the four sets of digital signals, the four sets of signal segments are extracted from the original digital signals for comparison. When there are fewer than four sets of the same signal frequency bands in the four sets of digital signals, these same signal frequency bands are deleted. The sound fluctuation range of the four sets of the same signal segments is compared. Based on the sound fluctuation range, the segment with the largest fluctuation range among the four sets of compared digital signal segments is selected and retained. S3. The channel selection module selects all digital signals. Each digital signal segment retained after comparison is selected by the four channel groups according to the original number, so that the retained digital signal segment corresponds to one channel. The audio processing module sorts all retained signal segments according to the reception time, and amplifies the fluctuation range of all signal segments according to an appropriate ratio. Finally, all signal segments are input into the playback module in sequence. S4. The playback module converts all received audio signal segments into sound wave signals, and then inputs them into the speakers of different channels in sequence according to the channel numbers marked on the signal segments for playback.

2. The hearing aid multi-channel integrated processing method according to claim 1, characterized in that: In step S2, the audio channel analysis module extracts audio segments with gaps between them for comparative analysis. During the analysis, the part with the largest fluctuation range is marked. When the largest fluctuation range in the same audio segment is located in multiple audio signals, the signal segment is further segmented according to the change in fluctuation range for comparative analysis.

3. The multi-channel integrated processing method for hearing aids according to claim 1, characterized in that: If the number of identical frequency band signals obtained after comparison and analysis by the channel analysis module in step S2 is less than four, it means that at least one of the four microphones has not received sound waves. If the same four sets of signals are not analyzed for a long time, it can be determined that the microphone of the hearing aid is damaged.

4. The multi-channel integrated processing method for hearing aids according to claim 1, characterized in that: In step S3, the channel selection module numbers the channels according to the original microphone numbers, and each audio signal has a matching channel number.

5. A self-echo cancellation system for a hearing aid based on claims 1-4, characterized in that: Includes the following modules: The signal receiving module receives audio through four sets of microphones, then converts the four sets of audio into digital signals, and each set of digital signals is individually numbered. The channel analysis module analyzes and compares four sets of digital signals, compares the same signal segments in the four sets of signals, compares the sound fluctuation range of the same signal segments, and selects the segment with the largest fluctuation range among the four sets of compared digital signal segments and retains this segment of digital signal. The channel selection module selects all digital signals. Each digital signal segment retained after comparison is selected by the four channel groups according to its original number, so that the retained digital signal segment corresponds to one channel. The audio processing module sorts all the retained signal segments according to their reception time, amplifies the fluctuation range of all signal segments at an appropriate ratio, and finally inputs all the signal segments into the playback module in sequence. The playback module converts all received audio signal segments into sound wave signals, and then inputs them sequentially into different channel speakers according to the channel numbers labeled on the signal segments for playback.

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