Why does the cochlear battery consume power fast?

Some parents once asked me: They gave the child a hearing aid for a period of time before implanting the cochlear implant into the child. A hearing aid battery can last for ten days, but after the child made a cochlear implant, he found the cochlear implant. Use three sectionsA675PThe battery can only be used for three to four days. Compared with a hearing aid battery, the power of the three-section cochlear battery is tripled, and the usable time is greatly reduced. Is the language processor of the cochlea so power-hungry?


The actual situation is indeed the case, the language processor of the cochlea is a big power consumer. Below I compare the hearing aid with the cochlea and analyze the reason for the power consumption: whether it is a hearing aid or a cochlear implant, the sound signal needs to be processed. The processed signal can be more easily understood by the children. Taking the cochlear implant as an example, it processes the sound signal by converting the vibrating sound wave into a current pulse that can be understood by the cochlea. Simply put, the audio signal is processed into an electrical signal. In contrast, the hearing aid is simple, its processing is only to slightly enlarge and optimize the sound signal, the sound signal is coming in, and the sound signal is sent out after processing. So the process of cochlear processing sound is more complicated than hearing aids, which is no doubt. Understand this, you said that people do so much work in the cochlea, eat more food (battery) is not enough.

Let’s continue to talk about the principle of this cochlear processing signal. As mentioned above, after the speech processor of the cochlea collects various sounds through the microphone, it must convert the sound into current stimulation. This conversion is not a one-to-one mechanical conversion, but There is a series of automated, intelligent optimization processes. This optimization process is the “language strategy” of the cochlear implant.

Parents who have studied English know that if you translate the English sentence directly into Chinese, it is very simple and not a headache, but the translated Chinese will make the reader feel very blunt and awkward and difficult to understand. If the entire sentence of English is considered comprehensively, and the translation is done according to the Chinese language habits, the effect will be much better. The price paid is that the translator’s brain has to turn a few more times. The language strategy of the cochlea is to do this work. You said that the language processor of the cochlea has been rotated several times. In order to have a better conversion effect, is it more power-consuming, of course? My understanding, (in the case of the Austrian cochlea), the power consumption of cochlear implants is mainly in two aspects:

The first is an external language processor that analyzes and processes the collected sounds, splits each instantaneous sound, and converts it into a set of encoded information, which then transmits wireless signals through the coil and transmits through the skin of the scalp. Give the implant. When the wireless signal penetrates the skin, because the skin impedance is large and some signals cannot be transmitted to the implant, the power consumed by this part of the signal is wasted.

The second is the built-in implant. After the implant receives the encoded information from the language processor, it is converted into a current pulse. Because the implant has no battery, his power is also from the battery of the language processor. You see, The language processor uses electricity, the transmission process also consumes a part of it, and the implant works and uses electricity. These are all eaten from the battery in the language processor. Cochlear scientists want to achieve as little delay as possible, requiring the above process to be completed in a few milliseconds (remarks)1000毫秒=1Seconds, the speed requirement is so high, and the power consumption is naturally fast. Therefore, the working mechanism of the cochlea determines that his power consumption is very large. There is a very interesting phenomenon here. Have you discovered that the cochlear battery is very durable when the child is very small, and can be used at the beginning.4Heaven, how can it last only three days in recent years? Can you guess what is the reason?

The reason lies in the loss of signal transmission mentioned above. The loss of the signal through the implant site is increased. Because the child grows up, the skin of the head is slowly thickening and the impedance is increasing. The efficiency of transmission begins to decline. In order to ensure the efficiency of transmission, the coil must also gradually increase the transmission power. Of course, the power increase will consume more power. So everyone should pay attention, don’t make your own child into a chubby pier, the subcutaneous fat is so thick, maybe the battery can only be used for two and a half days, hehe!

The implant of the head is not lazy. It sends tens of thousands of current pulse signals to each contact of the electrode every second. Especially the cochlear electrode has a longer length and wider frequency coverage. Imagine you standing. In a huge auditorium, without a sound reinforcement system, you need a louder voice to make the last row heard, which is much more laborious. It also requires more power. Having said that, I feel a little touched. The cochlea is too hard for the children to listen. So parents don’t care about the cost of buying the battery. Also pay attention to the quality of the battery, otherwise you will have a diarrhea, the cochlea may have to strike.

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