Huayu for engineering students

Chapter 62 Microphone (for further reading, recommendation)

The sun is rising, and the morning light is slightly dew.

Wang Xu got up and punched, Tang Yun's matter was left to her to solve by herself, and Wang Xu became famous.But it still made Wang Fei jealous all night, saying that she was still there, so Wang Xu bought a maid.

In fact, it was because Wang Fei was too tired the day before yesterday and couldn't make such a fuss every day, so Wang Xu still had a good sleep with his arms around the girl.

But this directly led to Wang Xu's anger today, getting up and punching before dawn.

As for the maid, I hope Guo Liang doesn't misunderstand.

Wang Xu has to go to the laboratory today, and in the next few days.This made him suddenly feel like he was going to work, the feeling of a social animal, which he hadn't experienced for many years.

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It only took Wang Jinghua two days to start working, and then took over the decoration project of the small courtyard.

Wang Xu asked the accountant to do the accounting, and gave Tang Yun [-] yuan for Wang Chao's clothing, and asked her to redeem her body to settle the matter.

I took 18 and invested it in Wang Chao Art Studio.

In fact, the money was mainly earned in the first week, and only tens of thousands in the next two weeks, but it is obvious that Wang Chao Clothing is no longer worried about survival.

The waiters that the labor service center helped to find, as well as the accountants and cashiers, have all taken up their posts full-time. The waiters went to my Wang Chao Clothing and were under Tang Yun's management.

Accountants and cashiers belong to Wang Jinghua, and they usually manage the cash flow of Wang Chao Clothing by the way. There are not many jobs at present. In the future, Wang Chao Studio will be changed to the parent company of Wang Chao Clothing, holding all the shares.

Wang Chao's studio was opened by Wang Xu and Wang Fei, and [-]% of Wang Fei's shares were held by Wang Xu. Wang Xu made Wang Fei agree to [-]% of the shares.

This girl has no interest in business at all, and doesn't even bother to ask for a share, as long as she guarantees her clothes every month.

Tang Yun used [-]% of Wang Chao's dry stock as an incentive, which was agreed a long time ago, and Wang Xu didn't plan to make any changes.

Due to the addition of Wang Chao Clothing, a subsidiary with a large cash flow, Wang Jinghua's dry stock has been reduced to 5% of the studio, which is also a 10-year option. The current position is the general manager of the art studio.

It's not popular to be called CXO at the moment, and the manager is the standard title at this time. Wang Xu didn't make a difference, and just followed the trend to save trouble.

In a blink of an eye, a few days later, Wang Xu returned to the small courtyard with the adjusted recording equipment. Unfortunately, the small building has not been renovated yet, so he had to put it in the warehouse first.

The recording studio needs special sound-proof walls and sound-absorbing walls. In the layout of ordinary rooms, it will also be tossed to death by echoes.

The rented laboratory helped Wang Xu a lot. In addition to debugging the recording equipment, Wang Xu also successfully made several sets of microphones.

The foundation is from RB Iron Triangle. The products a few years ago were quite expensive, but these were damaged by damp, and no one knew how to repair them. They were bought back by Wang Xu at the scrap price.

Wang Xu does not have the kind of film capacitors provided by the system, but the circuit ideas given can still be used as a reference. The existing film quality itself is quite good, and it is also a high-end product in the world, but there is a problem with the circuit design of Audio-Technica.

This is a system engineering problem. Everyone knows the solution, but different companies will end up with different products, and every product of every company has various problems, big or small. .

For users, different microphones may produce different sound characteristics. If used properly, it may be more brilliant to use an inexpensive microphone.

As a result, certain product defects eventually even became the characteristics of certain brands, forming differences such as certain timbres that are colder and certain timbres that are warmer.

This is very metaphysical, at least very emotional, which is why the manufacture of musical instruments and audio equipment cannot always keep pace with the development of electronic technology, and is always half a beat, or even a few beats behind.

But generally speaking, the pursuit of high sensitivity and high fidelity is still the ultimate requirement for microphones.

The so-called good product is often when the capabilities of parts and components can be brought into full play, and at the same time, the parts have the least negative impact on each other.For this kind of system tuning, Wang Xu's good ears are the biggest cheat.

He was able to discern subtle differences in the feedback sound waves in the headphones when using different microphones.At this point, his ears are better than an oscilloscope.

Of course, since it is a system project, the capabilities of earphones and speakers as output devices limit the upper limit of Wang Xu's judgment.

So Wang Xu could only adjust the microphone, then go back to adjust the headphones, adjust the speakers, and then go back to adjust the microphone. In short, it was very frustrating.

Fortunately, the final result was unexpectedly good. Wang Xu successfully made a simplified system microphone.

The effect of the finished product is very good, in Wang Xu's ears, at least it is much better than the Audio-Technica.

Although he has never bought one, Wang Xuke has tried various input and output devices from equipment dealers, and he is familiar with the microphones, earphones and speakers that can be seen on the market.

The microphone produced by Wang Xu has a very wide frequency response, perfectly covering the complete human hearing limit, and achieving full coverage from 20hz to 20Khz.

However, there are obvious signs of attenuation in the ultra-low frequency and ultra-high frequency parts. This should be a problem with the capacitor film. After all, Wang Xu still uses the original Audio-Technica’s own film capacitor.

As for the lower and higher parts, Wang Xu didn't test it at all, because even he couldn't hear that kind of sound, which was in the category of infrasound and ultrasonic waves.

Moreover, the sensitivity of this microphone is quite high, especially for the capture of faint breaths, it shows amazing sensitivity, and this sensitivity can be called the top in the industry.

But then again, Wang Xu made this kind of microphone because it is too sensitive, and the requirements for the singers are simply too high.

For a singer like Wang Xu with a very high breath control ability, such a microphone is simply a magic weapon. As for Wang Fei, there should be no problem.

Her current breath control is very stable. Although she lacks the ever-changing enchantment of the later generations, her basic skills and background are already stronger than the later generations.As for her unpredictable and ethereal voice in the future, the change of her sexy and charming breath still needs years of accumulation to mature slowly.

But for ordinary people who are at the level of karaoke, or even ordinary singers whose singing skills are not very up to standard, if this kind of microphone is used, the shortcomings may be exposed to nowhere to hide.

Any small breath instability, or the sound of exhalation and inhalation, will be clearly recorded, instead of being vague like ordinary microphones.

Of course, such a sound can also be adjusted through the skills of the tuner, but this will increase the difficulty invisibly, and secondly, it will also lead to a surge in cost.

For this reason, Wang Xu specially designed a special circuit that can fine-tune the sensitivity, and made an adjustable microphone to provide a better choice for singers with average singing skills.

(End of this chapter)