Before answering the question, let's recall the working principle of hearing aids:
When a hearing aid works, the microphone first converts the received sound signal into mechanical energy, and then into electrical signals , and then processed and amplified electrical signals are converted into acoustic signals by the receiver (speakers), and finally, the sound will be sent into the ear.
So why would anyone think that a hearing aid is an amplifier? Because the design of hearing aids is inspired by amplifiers, early analog hearing aids are basically similar to amplifiers, belong to the linear amplification, for the same amplification of loud and small sounds, long-term wear of analog hearing aids may cause secondary damage to the hearing.
And now the mainstream hearing aids on the market for digital hearing aids, is a high precision electronic products, the main composition by: microphone, receiver, amplifier, inductor and so on. It can be different listening environment, automatic noise reduction, compression ratio, etc., to control the noise, maximize the output of speech sound.
This is why wearing a hearing aid does not hurt your ears.
If you need advice on hearing, hearing aid selection and other issues, you can pay attention to Acoustiguide Hearing Aids Concern Like! If you have any questions, you can comment, there are questions and answers! Welcome to add comments! For more information about hearing aids, you can click on the avatar above to follow me!
The hearing aid is actually an audio amplifier, mainly composed of microphone, amplifier and headset, the microphone will receive the sound signal into an electrical signal sent to the audio amplifier circuit amplified to drive the headset work. For some of the complexity of the hearing aid, some internal noise reduction circuits and a variety of automatic control circuits.
1?Obviously, the hearing aid is an amplifier;
2?And we have seen a variety of amplification systems are the same as the basic three elements, there is a collection of sound microphone, amplify the signal of the power amplifier (amplifier, chip), the speaker (amplified sound signal), the difference is that the usual sound amplification system is designed to be heard at the same time by a lot of people (such as meetings, performances of the sound amplification system). The difference is that the usual sound amplification system is designed to be heard by many people at the same time (e.g., conferences, performances).
3? Hearing aids are a personal amplification device, that is, only for a person to use, the three original also made miniaturization (there will be different amplification principle).
4?Hearing aids belong to the second class of medical devices, need fda approval.
5?Hearing aids need to be professionally fitted to achieve a more satisfactory result.
A lot of people think that a hearing aid is actually an amplifier, which only amplifies the sound, but a hearing aid is not just an amplifier. First of all, hearing aids amplify the sound signal to maximize the user's perception of the sound. As we all know from experience, it is not easy to hear sounds that are too small. Secondly, hearing aids can selectively amplify sounds of different frequencies according to the user's hearing loss (e.g., for patients with high-frequency hearing loss, high-frequency amplification; for patients with low-frequency hearing loss, more amplification of low-frequency), in an effort to ensure that the user can hear as well as try to hear clearly. Thirdly, most hearing aids focus on amplifying speech frequencies to ensure speech communication. Fourthly, with the addition of some special circuits, some hearing aids can amplify small sounds while limiting the output of larger sounds as needed. Because of the above features, hearing aids can benefit most users. However, hearing aids are not a "one-size-fits-all" solution and cannot solve all the problems of deafness. For example, the upper limit of normal hearing is 20,000Hz, while the frequency range of hearing aids can reach 8,000Hz is already very good, the frequency of more than 8,000Hz sound rarely respond. In this sense, no matter how good a hearing aid a deaf person wears, he or she will not get better hearing than a normal person. Therefore, it is totally unrealistic to think that hearing aids will eliminate hearing impairment.
The main purpose of wearing hearing aids is to improve hearing, but will not affect the patient's own original hearing, so there will not be a long time to wear a more serious hearing loss of this kind of situation, if the gradual decline in hearing, mainly related to the patient's own hearing or condition, and the hearing aid is not directly related. At present, if it is moderate or severe deaf patients, the time is longer, there are many patients can consider choosing hearing aids to improve hearing. A lot of people think that hearing aids are actually an amplifier, only amplify the sound, but hearing aids are not just amplifiers so simple.
Is a hearing aid just an amplifier?Many people think that a hearing aid is just an amplifier, a megaphone. Indeed, the original design principle of the hearing aid is a megaphone, you put your palm into a curved shape and then put it behind the back of the ear, does it feel like the sound becomes a little louder? This is what inspired Bell to make hearing aids in the first place.
The statement that a hearing aid is an amplifier was true decades ago, but it is not true today. Nowadays, hearing aids are basically digital hearing aids, which are highly sophisticated electronic products, and nowadays, hearing aids are made up of microphones, receivers, amplifiers, inductors, compressors, and clippers, which are all missing.
Why do I say that hearing aids are basically digital hearing aids, because in the market, there are still about 5% to 10% of the hearing aids are analog hearing aids, analog hearing aids are basically similar to amplifiers. Traditional analog hearing aids are linear amplifiers, which amplify light, medium and heavy sounds equally, so deaf people wearing analog hearing aids are likely to experience the phenomenon of small sounds and loud sounds, and wearing these hearing aids for a long time is likely to cause a further decline in hearing, which will aggravate the degree of hearing loss.
The digital hearing aid is able to define different environments, automatic noise reduction, compression ratio, and other characteristics, which coincidentally avoids the phenomenon of analog hearing aids that are hard to hear and loud to hear.
Digital hearing aids rely on the powerful computing technology of the computer chip, which can be used to calculate different compensation curves according to the user's different degree of hearing loss, age and so on, automatically selecting different formulas to maximize the patient's ability to meet the hearing needs.
The role of the hearing aid i is to optimize the processing of various sounds according to the user's residual hearing and listening environment. It allows the user to hear outside sounds clearly and comfortably. The earliest hearing aids were the equivalent of amplifiers. Single-boot hearing aids are no longer simple amplifiers; they amplify sound in a way that is personalized to the amplifier and compensated for according to your hearing loss. In addition to amplifying the sound, it also optimizes the sound, such as noise reduction, speech enhancement, etc. The current hearing aid is similar to a miniature computer.
A lot of people think that hearing aids are just amplifiers that amplify sound, but hearing aids are more than just amplifiers. First of all, hearing aids amplify the sound signal to maximize the user's perception of the sound. As we all know from experience, it is not easy to hear sounds that are too small. Secondly, hearing aids can selectively amplify sounds of different frequencies according to the user's hearing loss (e.g., for patients with high-frequency hearing loss, high-frequency amplification; for patients with low-frequency hearing loss, more amplification of low-frequency), in an effort to ensure that the user can hear as well as try to hear clearly. Thirdly, most hearing aids focus on amplifying speech frequencies to ensure speech communication. Fourthly, with the addition of some special circuits, some hearing aids can amplify small sounds while limiting the output of larger sounds as needed. Because of the above features, hearing aids can benefit most users. However, hearing aids are not a "one-size-fits-all" solution and cannot solve all the problems of deafness. For example, the upper limit of normal hearing is 20,000Hz, while the frequency range of hearing aids can reach 8,000Hz is already very good, the frequency of more than 8,000Hz sound rarely respond. In this sense, no matter how good a hearing aid a deaf person wears, he or she will not be able to get better hearing than a normal person. Therefore, it is totally unrealistic to think that hearing aids will eliminate hearing impairment.
Hearing aids are simply an amplifier, but the amplification can not be realistic, can not be close to the original, there is no noise, which depends on the performance of the hearing aid, just like we have a train from Shanghai to Beijing, a car, a motorcycle, an airplane a lot of transportation, but the arrival time is different, different levels of comfort, the performance of hearing aids determines the wearer's clarity is different
How do you know that hearing aids can help you to hear?
Hello: Are hearing aids just amplifiers?
Cheap hearing aids are equivalent to an amplifier, a good hearing aid is not a simple amplifier, he has a lot of functions, hearing aids can amplify the sound signal, maximize the user to ensure that the user feel the sound, can be in accordance with the hearing situation to selectively amplify the sound of different frequencies, and strive to ensure that the user can hear both hear and listen to clear.
I hope my answer can help you.
1?Obviously, a hearing aid is an amplifier;
2?And we have seen a variety of amplification systems are the same basic three elements, there is a collection of sound microphone, amplify the signal of the power amplifier (amplifier, chip), the speaker (put out the amplified sound number), the difference is that the usual sound amplification system is designed to be heard at the same time by a lot of people (such as meetings, performances of the sound amplification system). The difference is that the usual sound amplification system is designed to be heard by many people at the same time (e.g., conferences, performances).
3? Hearing aids are a personal amplification device, that is, only for a person to use, the three original also made miniaturization (there will be different amplification principle).
4?Hearing aids belong to the second class of medical devices, need fda approval.
5?Hearing aids need to be professionally fitted to achieve a more satisfactory result
Hello: Is a hearing aid an amplifier? Hearing aids amplify sound signals to maximize the user's perception of the sound. We all have this experience, too small sound is not easy to hear; secondly, hearing aids can be in accordance with the user's hearing loss situation to selectively amplify the sound of different frequencies (for example, on the high-frequency hearing loss of patients, high-frequency amplification; on the low-frequency hearing loss of patients, more amplification of the low-frequency), and strive to ensure that the user can be heard and as far as possible to listen to the clear. I hope my answer is helpful to you