Ye Kai conceived it this way. Pen, fun, and www.biquge.info

In the interior, the seats are all made of leather materials, and the rear seat passengers should have enough space to put their feet, and then equipped with a car refrigerator. Of course, this refrigerator is not the flashy thing that used semiconductor refrigeration in the previous life, but uses a real compressor.

When it comes to compressors, in fact, the principle is the same as that of household refrigerators, but the volume of the compressor has been reduced to one-third of the original.

In addition, a luxury car should be equipped with the top car audio host and audio equipment, and these equipment, in the era when car audio is only used to pass the driver's boring time and imitate fatigue driving, no one has paid attention to the development of this aspect, and no one knows how huge the profit of this piece is in the previous life.

Because, in this era, Bose, Harman Kardon/Baker, Denso, Siemens and Alpine, which were well-known in the car audio OEM industry in the previous life, have not been involved in this industry, and have not carried out the business of providing OEM audio for luxury cars, only companies such as Sappunkt and Sony provide audio equipment for cars. Then, Ye Kai can set up an audio company in advance to provide car audio for several of his car factories, so as to make his own reputation and get a share of this huge market in the future.

You know, in his previous life, Bose Company was completely famous and well-known in the car audio OEM world because of his several patented technologies, although his home and theater audio systems were also very famous.

The first major technology is passive dual-mode resonance technology, which uses resonance to exhaust the air behind the speaker's paper cone and passively increase the thrust of the speaker to make the volume stronger. The benefit of this technology is that it allows smaller speakers to produce a rich, full-bodied bass effect and create a wider vocal range.

The second major technology is near-field speaker technology, which places the speakers on both sides of the headrests or shoulders of the front seats to create a unique sound field for the front passengers, so that the passengers can have a better audio-visual effect. You know, because of the objective limitations of the car, the horn in the cab of the car is either located on the door panel or on the center console, but there is always a horn close to the front passengers, and a horn is far away, which causes the sound field environment to be very distorted.

Finally, the most important technology is car noise compensation.

This is one of Bose's signature innovations, which uses microphones installed in the car to monitor the noise level in the car and automatically adjust the volume of the music in the noise-overridden part to compensate for the noise generated by the car while driving and the ambient noise from the outside of the car.

This technology was developed by Bose in '84 when it tailored the audio system for GM's Corvette models.

At that time, all sound systems were analogue and did not have any digital signal processing technology. However, BOSE has created a complete set of analogue circuits to monitor the noise level in the car and automatically adjust the volume and tone of the speaker. However, due to the large and complex size of this analog circuit set, it was not reflected in this car.

It wasn't until 1997 that digital signal processing technology became powerful enough and the operating costs were greatly reduced that noise compensation technology was widely used in car audio systems.

This technology may have been difficult for Bose, because they did not have a dedicated chip design company at that time, so naturally they would not have turned around and entered the digital signal processor market that had just appeared in the finished product. It wasn't until Analog Devices came along in '93 to provide the market with a plethora of affordable digital signal processing chips that they began to put the technology that had been invented for more than 10 years into practice.

That's because Analog Devices was recognized as the world's leading supplier of data conversion and signal processing technologies, with over 60,000 customers worldwide, including all types of electronic device manufacturers. As a leading manufacturer of high-performance analog integrated circuits (ICs), ADI's products are used in both analog and digital signal processing.

Ye Kai knows the principle of this technology, and also knows the internal structure and algorithm of ADI's digital signal processor, it may be difficult to achieve all the functions according to the current chip process technology, but it is very simple to realize the simplified version of the function. You must know that Ye Kai not only has Kailuo's chip R&D team, but also will have Fairchild behind the scenes, and there is no problem in theoretical research and specific manufacturing.

As for the 5.1 surround sound system customized by Bose on the previous life Aodi Q3, as well as the advanced sound field positioning technology that they are proud of, it is better to wait for Ye Kai's own DVD standards to be formulated, and then consider introducing this technology into the car!

As for Harman Kardon, it was only in the early 90s that he first began working with car manufacturers to produce car audio. The first model of cooperation was the BMW 3 Series, and with the success of the 3 Series, it was also considered to have opened the door to cooperation with car manufacturers. It has good cooperative relations with Mercedes-Benz, BMW, Volvo, Chrysler, Jeep and other brands.

The reason why Harman Kardon's sound system can compete with Bose is, of course, his own specialty, which is derived from his Logic7, Clari-Fi and HALOsonic technologies. All three are some of Harman Kardon's most prominent technologies, and they are a testament to their ability to compete with other brands in the increasingly competitive car audio market.

Logic7 is actually a Harman Kardon software system that converts traditional 2.1 and 5.1 channel audio files into 7.5 channel playback effects. Of course, there are also certain requirements for the played file to achieve this effect.

Clari-Fi, on the other hand, is an automatic repair technology for lossy sound quality, which simply means that when you play poor quality music or broadcast FM, Clari-Fi will repair and restore the damaged vocal range in the audio, and when playing a CD with a high-quality audio source, Clari-Fi will not correct it in any way.

HALOsonic, on the other hand, is HARMAN's solution for interior noise, which is often referred to as "active noise cancellation" technology. This feature minimizes tire noise, wind noise and engine noise while the vehicle is in motion. The principle is to detect all kinds of continuous noise through pickups (such as microphones, etc.), and then concentrate on processing, so that passengers in the car can eliminate the sense of noise in their senses, so as to make the cabin quieter and more comfortable.

And as for Alpine, needless to mention, what about Denso and Siemens? It has been very successful in navigating the host, and its circuit structure is very helpful for Ye Kai to develop his own navigation host in the future. However, Denso's main engine is usually used in Fuso country cars, and it is rare to see brand cars in other countries, and it is not to say that there are none.