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"That's the end of this press conference, thank you again for watching, goodbye!"

When the words fell, the recording indicator on the wall was also extinguished, and he subconsciously wiped the fine sweat on his forehead, and Atletico Madrid breathed a sigh of relief and finally said that it was over.

Walking out of the room through the soundproof door, he reached out and took the mobile phone handed by his assistant Zhu Lingling, and at the same time, her whispered reminder came from her ear, "Sister Yi called just now to ask about the end time of the live broadcast." ”

Atletico nodded slightly to indicate that he understood, and after a few brief words with Gao Yang, the person in charge of the outside world, he said goodbye and left.

The live broadcast of the press conference just now really tired him, and he urgently needed to find a place to rest, replenish his nutrition and sleep.

If it was just a simple online live broadcast, it would not be too much of a burden for Atletico Madrid, who was an open person, but he played a big game this time, not to mention the online and offline live broadcasts, and a bunch of new equipment used for the first time from time to time There were some signs of overuse in his brain and e7u, which made the long-lost state of fatigue reappear on him.

The empty corridor is long, quiet and shady, and the two electric scooters in front of and behind are driving out at a constant speed, and the low-noise characteristics of the DC inverter motor are completely useless in this quiet environment, so that the entire corridor reverberates with the continuous hum of wheels.

Until the sound could no longer be heard, the people who poked their heads and even their bodies out of the door to listen showed relaxed smiles on their faces, and walked towards the VRS studio that Atletico had just left.

This is the location of the Bee Acoustics Department, which used to be a large bomb shelter deep into the mountainside.

In the past, as the front line of coastal defense, the people of Ludao dug a large number of air-raid shelters under the guidance of the national defense slogan of "digging deep holes and accumulating grain". In today's peaceful years, many bomb shelters have been repurposed into tunnels, underground shopping malls, indoor ice rinks, warehouses and hotels. The bees near the water have also acquired the ownership and conversion rights of a decommissioned bomb shelter at a discounted price, transforming it into the largest acoustic studio cluster in Asia.

On both sides of the long corridor are recording studios, broadcast studios, and acoustic studios with different functions, where voice actors, musicians, recording engineers, and sound engineers work. Just now, the boss was broadcasting the press conference next door, and everyone naturally didn't want to leave their work and run to watch, but now that the boss has left, some people who are temporarily okay immediately have the idea of going over to have a look. None of their supervisors did anything against their wishes, and even a few of them took the lead in desertion.

No way, life underground is too bitter and lonely!

The thick mountain blocks the ambient noise and heat of the outside world, and also blocks the outside network signal, making it a hell of a dead star without wifi, even if you want to use the traffic luxuriously, the speed and stability are all kinds of pitfalls, only the 2G signal because of the indoor relay amplifier, it can still be used normally, but no one will want to be like GPRS high-speed Internet access, after all, it was once difficult to enter the water, and I regretted it when I entered here.

Although all kinds of work computers are connected to the wired network, but the installation on them are not directly logged in to the World Wide Web dedicated system, no problem to check the information and other network applications hehe, so over time everyone has formed the habit of visiting everywhere, just like the life before the popularization of television broadcasting.

In the VRS studio, I felt that I could no longer hear the sound of the wheels, and everyone relaxed all of a sudden, chatting, drinking, and walking, and so on, of course, the most was looking. Although everyone is involved in this VR studio project, they didn't have time to take a closer look at it because of the schedule, and now that the work has finally come to an end, the pent-up curiosity is naturally difficult to suppress.

Before the studio boss Gao Yang could arrange the next step, a lot of people rushed in at the door, obviously they were also curious about what was in the VR studio.

Seeing the undisguised itching on everyone's faces, Gao Yang knew that if he refused at this time, although he would not die very well, it would be appropriate not to receive a smile in the next few days, so for the sake of friendship and good-neighborliness, he also waved his hand kindly, "If you want to see it, go in and see, but wait in line! Only five people can go in at a time, remember to be careful, don't knock down all the dummies inside!"

Naturally, there was a burst of cheers in response, and only the people closest to the soundproof door of the recording studio wept and reluctantly pulled out their phones. If the boss didn't talk about queuing, they would naturally rush to the top of the building, but since they said they were going to queue up, their first-mover advantage was nothing, and they only looked at luck.

The guaranteed buyout mechanism of the bee store has attracted many individual developers to participate, contributing a lot of small and convenient daily applications to the majority of users, and the "Row Seat Seat" that they have opened on their mobile phones is one of them.

In the original version, the developer just transplanted the bank queuing and calling system to the mobile phone, hoping to avoid the trouble of crowding people and waiting in long queues, and later Bee Software bought and took over, and expanded the concept of queuing to other multiplayer activities, and launched functions such as performance management, classroom sign-in, board game assistance, etc., which were deeply loved by teachers, students and board players on campus.

But for now, everyone only needs to use its most basic queuing function, some people are staring at Gao Yang, and some people are staring at their mobile phones.

The smart networking function of the bee mobile phone is still easy to use here, and soon the mobile phone screen will be brushed up"The VRS visit queue initiated by Gao Yang",Everyone stretched out their fingers and poked at the sight,It only took a few seconds to complete the queuing work。

Then, not surprisingly, the few near-water brothers at the door decisively lost the advantage of the front row, and were squeezed aside by others with a smile, and at the end they were teased with a sentence "Dude, your hand speed is more exercised, otherwise you can't satisfy your sister-in-law/younger sister, and it's not good to be taken advantage of by Lao Wang!", but he could only reply sourly, "Your hand speed is so fast, and you have been single for 30 years?"

In response to them, the former's slightly distorted laughter was echoed, and the first group of five people had already walked into the studio, and due to the sound-absorbing materials inside, there would be slight differences in the sound of the voice.

Several people at the door looked at each other and reached for the heavy soundproof door at the same time.

The acoustic studio does not have enough configuration, because of the different purposes of use, there are very different requirements for environmental noise, reverberation intensity, room size, wall material and other indicators.

Take the simplest quiet Cheng dù as an example, although the unanimous requirement is to be as quiet as possible, but there is a significant gap in the requirements for environmental noise, as long as the ordinary recording studio is lower than 25db, even if it is up to standard, too low is not good, it will make people feel awkward, because the sound outside is small and the sound inside their own body begins to be obvious.

The room used for sound recording and noise testing required a "silent" environment as close to 0db as possible, with walls and ceilings covered with sound-absorbing materials and reverberation becoming faint. This process is not really silent, but the sound pressure is not perceptible to the small human ear, and the pickup device can still obtain useful or useless signals.

For audio systems and voice assistants, the ambient noise requirements of the real room used for testing are higher, such as the silent real room used by bees for noise testing of hardware equipment, and the ring noise is as low as -6db. Because in this environment, the human ear cannot hear the slightest sound of the outside world, and it feels like having cut off the connection with the world all of a sudden.

Although the VRS recording studio did not reach 0db, it was also very close, so as the soundproof door closed, the five people inside suddenly felt a silence in their ears, and the noisy sound that was getting farther and farther behind them suddenly disappeared, and they couldn't help but turn around and look back one after another. Seeing that the soundproof door was closed, they scolded one after another, but no one outside was listening to the monitoring headphones, and the scolding was in vain, so they had to raise their legs and continue to walk forward.

Fortunately, the delicate doll in front of them saved them a lot of good mood.

These dolls are young and old, young and old, most of them are young men and women, and they wear a variety of clothes, ranging from thick winter clothes to cool swimsuits, and even big horns naked.

They are an important asset to the VRS room, where the walls and walls are on par with the sensor network on the ceiling. This is because the latter is responsible for tracking the shape and position of the environment and moving objects, while these dolls provide a magical recording of the human head.

The propagation speed of sound in the ground air is about 340 meters per second, which means that sound can travel 34 centimeters in 1 millisecond, so the position relationship between each sound source in the real environment will produce a millisecond delay difference when it reaches the human ear or pickup.

Based on these parameters, our brain can vaguely judge the location information of the sound, such as the left, right, forward, back, far, and near movement speed of the sound source.

In the process of sound recording-playback, this positional attribute is often not well restored, especially in the headphones, which are prone to errors.

When listening to songs with stereo in-ear headphones, you often feel that the sound seems to appear directly in your mind rather than around your body, commonly known as the "in-head effect" (in-head effect), which is caused by the mismatch between the position relationship between the left and right earphones and the position relationship between the pickups in the recording studio.

The recording industry has long discovered this problem and proposed a solution to let the pickups simulate the environment in which headphones are used. Because the human chest, shoulders, and ears have a "refraction" effect on sound, and the skull has a "transmission" effect on sound, the sound that people eventually hear is a combination of these effects. In addition to shortening the distance of the pickups, it is also necessary to simulate these factors as much as possible, especially the influence of the human head, so this new recording technology is also intuitively called human head recording.

There are three ways to record the human head, the first is to stuff the miniature omnidirectional pickup into the volunteer's ear to collect 100% of all the sounds heard by the real person, the second is to make a simulated human head and fix the omnidirectional pickup to the eardrum position, so as to simulate the effect of the human head, and the third is to create a head-related transfer function hrtf to simulate the influence of the human head in the process of sound transmission, and then convert and process the ordinary recording signal through the guò algorithm to add a "human head" effect to it.

In the field of head recording, especially in the field of digital analog heads, Atletico Madrid is recognized as the world's first in the industry, others only think that he is talented and makes rapid progress, only he knows that this is all forced.

At the beginning, Atletico Madrid researched the head recording technology, completely to process the audio and video materials in the library in the body, most of the voices played in the brain are missing the HRTF function, which sounds very weird, and Ma can only rely on himself to find a way to add a digital head effect to it.

Fortunately, he has an advantage in this area that researchers all over the world do not have, others can't let volunteers wear pickups for a long time, Atletico can, his own cochlea is the best head pickup, others have to painstakingly study anatomy and bionics, Atletico doesn't need to, he just needs to make Atletico Madrid's exclusive HRTF function for his own use.

With the help of e7u, he quickly solved this problem, not only transcoding the audio and video data stored in his body, but even making a special playback software so that he can enjoy the human head effect when using headphones.

Later, Tang Jiayi accidentally used Atletico Madrid's earbuds to listen to songs, and discovered this secret, although because of the obvious individual gap between them, the effect of the guide was discounted, but it still calmed Ms. Tang. The sudden appearance of the sense of surrounding and closeness made her first startled, and then she was furious, scolding Ma for having good things to hide and not give her to play.

Soon, after a certain overseer acted as a model for Atletico Madrid to collect fine body numbers and adjust the parameters, Tang Jiayi's exclusive HRTF player was released. However, she did not stop urging Atletico because she was satisfied with the results, but urged him to develop a more general player plug-in.

Clearly, Ms. Tang has seen a huge opportunity in this area.

The money is very good, and Atletico Madrid will certainly not be arrogant to refuse, and even learned a step-by-step trick from the toothpaste factory Intel.

As early as two years ago, the bee video business fully launched the headphone mode, with the help of the general HRTF algorithm to repair the distance parameters of the left and right audio tracks, so that the stereo headphones are truly stereoscopic. Last year, Bee Music launched Headphone Mode 2.0, which brings powerful surround sound to the earbuds.

In the past, Dreamwalker VR equipment used complex and high-cost multi-channel headsets, which led to the development of multi-channel headsets.

Now, Bee has taken great pains to build this VRS acoustic recording studio and prepared hundreds of high-fidelity dummies for head recording, which is bound to drive the head recording technology to make great strides forward.

However, the mastermind behind the scenes held the USB-C headset with built-in "head-effect" DSP and smiled silently.