How do hearing AIDS cope with noise?

Compared with people with normal hearing, hearing-impaired people need a higher signal-to-noise ratio in noisy environment to obtain the necessary speech intelligibility. Therefore, it is pointed out that hearing-impaired people need to face more noise problems in the selection of hearing aid equipment, the implementation of rehabilitation teaching and daily life. Among all kinds of noise problems faced by hearing-impaired people, the noise caused by wearing hearing AIDS has always been the focus of attention, and it is also the focus of many experts. In order to solve this problem, we will focus on several noise reduction technologies and methods of hearing AIDS.

1, traditional noise reduction mode-reducing gain Traditional noise reduction technology takes the input signal as the initial mode to estimate the difference between speech and noise, and reduces the gain according to the noise level or environmental signal-to-noise ratio. The principle of reducing gain is to minimize the influence of noise masking on speech intelligibility, but unfortunately, reducing gain has the same influence on speech and noise. Therefore, the traditional noise reduction technology can only provide better comfort.

2, noise in life-digital noise suppression technology for noise that often appears in the living environment, including the sound of household appliances in daily life, the sound of cars and so on. Because of the different signal structures of language and noise, hearing AIDS will detect and digitally analyze the frequency spectrum of input sound to distinguish the difference between ordinary speech and noise, and then suppress noise. When the noise signal disappears, the suppression will stop. So as to ensure that the wearer can always hear clear and true sound.

3. Excess speech noise-directional microphone technology Under the condition of analog technology, the directivity of hearing aid microphone is fixed and cannot be adjusted according to the change of environmental noise. After adopting digital technology, according to the signal analysis collected by the front and rear microphones, the direction of the microphone can be adjusted in real time according to the noise change, which will be beneficial to hearing aid wearers in complex environments.

As a technology repeatedly verified by clinical trials, directional microphone technology is currently recognized as one of the methods to improve speech intelligibility. Directional microphone can improve the signal-to-noise ratio by reducing the sensitivity (gain) of side and back sound. In a typical noisy environment, the microphone is more sensitive to the sound from the front than the sound from the side and back. In this case, the signal-to-noise ratio is obviously improved. Obviously, this technology can easily shield the interference of surrounding sounds, improve the communication effect with the other party, and benefit the wearer in a complex listening environment.

4. Howling-acoustic feedback suppression technology Howling is actually acoustic feedback. The amplified sound leaks through the aperture and is received by the microphone again, resulting in "screaming" caused by re-amplification. Hearing AIDS will solve this problem through "feedback suppression" technology. In addition, it can also be solved by checking whether the earplug is firmly worn, whether the ear mold is suitable or debugging the machine.

In the past, when using hearing AIDS, we always felt that the background noise in the environment was amplified at the same time, which made the voice signal of whispering conversation not very clear. Or, hearing aid users open the window when driving, and the wind outside will be particularly strong. Now, with the newly developed "adaptive noise management system" for hearing AIDS, the hearing of hearing aid wearers can be better improved in noisy environment. The "adaptive noise management system" evaluates the sound signal that immediately enters the hearing aid: the input signal related to language changes randomly, because when we speak, the instantaneous waveform of the spectrum is very different and the standard deviation is also very large; However, the input signal related to noise is stable and continuous, with relatively stable waveform and small standard deviation. In noise processing, the noise management system will immediately detect the sound signal from the outside. Once a signal with a stable waveform and a certain intensity is detected, it is considered as a noise signal. Using the principle of multiple compressed channels, the gain of a single channel where noise is detected can be reduced. At the same time, using patented technology, the proportion of speech and noise in the signal is accurately counted and continuously evaluated, and the gain of the channel where the noise signal is located is changed in time, so as to reduce the noise without reducing the degree of speech understanding. Hearing AIDS with "adaptive noise management system" can make people with hearing loss enjoy clearer and more comfortable hearing even in noisy environment.

In the hearing aid noise processing, the noise management system will immediately detect the sound signal from the outside. Once a signal with stable waveform and certain intensity is detected, it is considered as a noise signal. Using the principle of multiple compressed channels, the gain of a single channel where noise is detected can be reduced. At the same time, using patented technology, the proportion of speech and noise in the signal is accurately counted and continuously evaluated, and the gain of the channel where the noise signal is located is changed in time, so as to reduce the noise without reducing the degree of speech understanding. Hearing AIDS with "adaptive noise management system" can make people with hearing loss enjoy clearer and more comfortable hearing even in noisy environment.

Intelligent noise reduction technology

For the noise that often appears in the living environment, including the sound of household appliances, the sound of cars and so on. Because language and these noises have different signal structures, hearing AIDS will detect and distinguish the difference between ordinary speech and noise through digital signal analysis, and then suppress noise. When the noise signal disappears, the suppression will stop. So as to ensure that the wearer can always hear clear and true sound.

Intelligent directional microphone technology

Under the condition of analog technology, the directivity of hearing aid microphone is fixed and cannot be adjusted according to the change of environmental noise. After adopting digital technology, according to the signal analysis collected by the front and rear microphones, the direction of the microphone can be adjusted in real time according to the noise change, which can help hearing aid wearers in complex environments.

Directional microphone technology is currently recognized as one of the methods to improve speech intelligibility. It can be focused and positioned according to the direction of sound, which can reduce the noise interference in other directions and ensure the sound to be fully amplified. Directional microphone allows you to hear more clearly in noisy environment. For example, reduce the sound sensitivity of the side and back, and focus on collecting and amplifying the sound signal in front.

Adaptive directional microphone can automatically select the most suitable polarity according to the change of surrounding environment, so as to appropriately suppress environmental noise in noisy environment and improve the signal-to-noise ratio (the ratio of useful sound signal to noise).

Adaptive cancellation of acoustic feedback function

Howling is actually acoustic feedback, which is popular because hearing AIDS have a continuous sound of "Ji Ji". The amplified sound leaks out of the hole and is re-received by the microphone, resulting in a "scream" caused by re-amplification. This makes the wearing comfort and clarity decline, and the hearing aid effect becomes worse. For this problem, hearing AIDS will be solved by "acoustic feedback adaptive cancellation" technology.

In addition, it can also be solved by checking whether the earplug is firmly worn, whether the ear mold is suitable or debugging the machine.

Of course, the noise reduction technology used in hearing AIDS is far more than that. High-quality noise reduction ability may offset the resistance of hearing-impaired friends, make them easier to accept hearing AIDS, and bring more comfortable hearing enjoyment during use.

Compared with people with normal hearing, hearing-impaired people need a higher signal-to-noise ratio in noisy environment to obtain the necessary speech intelligibility. Therefore, it is pointed out that hearing-impaired people need to face more noise problems in the selection of hearing aid equipment, the implementation of rehabilitation teaching and daily life. Among all kinds of noise problems faced by hearing-impaired people, the noise caused by wearing hearing AIDS has always been the focus of attention, and it is also the focus of many experts. In order to solve this problem, we will focus on several noise reduction technologies and methods of hearing AIDS.

1, traditional noise reduction mode-reducing gain Traditional noise reduction technology takes the input signal as the initial mode to estimate the difference between speech and noise, and reduces the gain according to the noise level or environmental signal-to-noise ratio. The principle of reducing gain is to minimize the influence of noise masking on speech intelligibility, but unfortunately, reducing gain has the same influence on speech and noise. Therefore, the traditional noise reduction technology can only provide better comfort.

2, noise in life-digital noise suppression technology for noise that often appears in the living environment, including the sound of household appliances in daily life, the sound of cars and so on. Because of the different signal structures of language and noise, hearing AIDS will detect and digitally analyze the frequency spectrum of input sound to distinguish the difference between ordinary speech and noise, and then suppress noise. When the noise signal disappears, the suppression will stop. So as to ensure that the wearer can always hear clear and true sound.

3. Excess speech noise-directional microphone technology Under the condition of analog technology, the directivity of hearing aid microphone is fixed and cannot be adjusted according to the change of environmental noise. After adopting digital technology, according to the signal analysis collected by the front and rear microphones, the direction of the microphone can be adjusted in real time according to the noise change, which will be beneficial to hearing aid wearers in complex environments.

As a technology repeatedly verified by clinical trials, directional microphone technology is currently recognized as one of the methods to improve speech intelligibility. Directional microphone can improve the signal-to-noise ratio by reducing the sensitivity (gain) of side and back sound. In a typical noisy environment, the microphone is more sensitive to the sound from the front than the sound from the side and back. In this case, the signal-to-noise ratio is obviously improved. Obviously, this technology can easily shield the interference of surrounding sounds, improve the communication effect with the other party, and benefit the wearer in a complex listening environment.

4. Howling-acoustic feedback suppression technology Howling is actually acoustic feedback. The amplified sound leaks through the aperture and is received by the microphone again, resulting in "screaming" caused by re-amplification. Hearing AIDS will solve this problem through "feedback suppression" technology. In addition, it can also be solved by checking whether the earplug is firmly worn, whether the ear mold is suitable or debugging the machine.

5. Wearing hearing AIDS in both ears is an effective way to improve the sound resolution of hearing impaired people under noise background. Studies have proved that binaural hearing is a necessary condition for spatial hearing and sound orientation.

In fact, the ability of noise reduction and sound orientation of human auditory system depends largely on the difference of sound signals felt by both ears. Therefore, wearing hearing AIDS in both ears can improve the ability to locate and understand sound in noisy environment and obtain higher sound quality.

In the hearing aid noise processing, the noise management system will immediately detect the sound signal from the outside. Once a signal with stable waveform and certain intensity is detected, it is considered as a noise signal. Using the principle of multiple compressed channels, the gain of a single channel where noise is detected can be reduced. At the same time, using patented technology, the proportion of speech and noise in the signal is accurately counted and continuously evaluated, and the gain of the channel where the noise signal is located is changed in time, so as to reduce the noise without reducing the degree of speech understanding. Hearing AIDS with "adaptive noise management system" can make people with hearing loss enjoy clearer and more comfortable hearing even in noisy environment.

In the hearing aid noise processing, the noise management system will immediately detect the sound signal from the outside. Once a signal with stable waveform and certain intensity is detected, it is considered as a noise signal. Using the principle of multiple compressed channels, the gain of a single channel where noise is detected can be reduced. At the same time, using patented technology, the proportion of speech and noise in the signal is accurately counted and continuously evaluated, and the gain of the channel where the noise signal is located is changed in time, so as to reduce the noise without reducing the degree of speech understanding. Hearing AIDS with "adaptive noise management system" can make people with hearing loss enjoy clearer and more comfortable hearing even in noisy environment.

In the hearing aid noise processing, the noise management system will immediately detect the sound signal from the outside. Once a signal with stable waveform and certain intensity is detected, it is considered as a noise signal. Using the principle of multiple compressed channels, the gain of a single channel where noise is detected can be reduced. At the same time, using patented technology, the proportion of speech and noise in the signal is accurately counted and continuously evaluated, and the gain of the channel where the noise signal is located is changed in time, so as to reduce the noise without reducing the degree of speech understanding. Hearing AIDS with "adaptive noise management system" can make people with hearing loss enjoy clearer and more comfortable hearing even in noisy environment.

Compared with people with normal hearing, hearing-impaired people need a higher signal-to-noise ratio in noisy environment to obtain the necessary speech intelligibility. Therefore, it is pointed out that hearing-impaired people need to face more noise problems in hearing aid equipment selection, rehabilitation teaching implementation and daily life. Among all kinds of noise problems faced by hearing-impaired people, the noise caused by wearing hearing AIDS has always been the focus of attention, and it is also the focus of many experts. In order to solve this problem, we will focus on several noise reduction technologies and methods of hearing AIDS.

1, traditional noise reduction mode-reducing gain Traditional noise reduction technology takes the input signal as the initial mode to estimate the difference between speech and noise, and reduces the gain according to the noise level or environmental signal-to-noise ratio. The principle of reducing gain is to minimize the influence of noise masking on speech intelligibility, but unfortunately, reducing gain has the same influence on speech and noise. Therefore, the traditional noise reduction technology can only provide better comfort.

2, noise in life-digital noise suppression technology for noise that often appears in the living environment, including the sound of household appliances in daily life, the sound of cars and so on. Because of the different signal structures of language and noise, hearing AIDS will detect and digitally analyze the frequency spectrum of input sound to distinguish the difference between ordinary speech and noise, and then suppress noise. When the noise signal disappears, the suppression will stop. So as to ensure that the wearer can always hear clear and true sound.

3. Excess speech noise-directional microphone technology Under the condition of analog technology, the directivity of hearing aid microphone is fixed and cannot be adjusted according to the change of environmental noise. After adopting digital technology, according to the signal analysis collected by the front and rear microphones, the direction of the microphone can be adjusted in real time according to the noise change, which will be beneficial to hearing aid wearers in complex environments.

As a technology repeatedly verified by clinical trials, directional microphone technology is currently recognized as one of the methods to improve speech intelligibility. Directional microphone can improve the signal-to-noise ratio by reducing the sensitivity (gain) of side and back sound. In a typical noisy environment, the microphone is more sensitive to the sound from the front than the sound from the side and back. In this case, the signal-to-noise ratio is obviously improved. Obviously, this technology can easily shield the interference of surrounding sounds, improve the communication effect with the other party, and benefit the wearer in a complex listening environment.

4. Howling-acoustic feedback suppression technology Howling is actually acoustic feedback. The amplified sound leaks through the aperture and is received by the microphone again, resulting in "screaming" caused by re-amplification. Hearing AIDS will solve this problem through "feedback suppression" technology. In addition, it can also be solved by checking whether the earplug is firmly worn, whether the ear mold is suitable or debugging the machine.

5. Wearing hearing AIDS in both ears is an effective way to improve the sound resolution of hearing impaired people under noise background. Studies have proved that binaural hearing is a necessary condition for spatial hearing and sound orientation.

In fact, the ability of noise reduction and sound orientation of human auditory system depends largely on the difference of sound signals felt by both ears. Therefore, wearing hearing AIDS in both ears can improve the ability to locate and understand sound in noisy environment and obtain higher sound quality.