Chapter 755: Let the computer speak

Let the computer speak, in this era, it seems to be a fantasy.
Computers are mainly used for scientific calculations. When the first Eniak was born in history, it was used to calculate ballistics, and at the same time, it was also used to decode codes.
Even if you look at the college computer courses of later generations, almost all of them are opened in the mathematics department, and it has the closest connection with mathematics.
Now, computers have begun to enter the family gradually, but at this time, they mainly do word processing and so on. For example, it is necessary to load a printer driver for it. It is also Qiu Xiaojun’s first project. It was completed quickly.
But now, looking at the graphical operating system, I don’t know when, Qiu Xiaojun suddenly thought of something. If the computer could make a sound, it would be great!
Computers are no longer dumb and can communicate with people. This is definitely a huge breakthrough!
Qiu Xiaojun wanted to make the computer pronounce, and he struggled for several months, but he couldn't make a breakthrough.
This requires co-hosting on software and hardware. For example, if you want to make a computer sound, you need something called a sound card. Historically, the world’s first sound card was called the ADLIB Magic Sound Card, which was born in Niu Country in 1984. ADLIBAUDIO company. It can be said that ADLIB is the veritable "father of sound cards".
Of course, the original technology is still very backward, and there are many shortcomings in performance. Take this first sound card as an example, it is mono, and the sound quality now seems to be extremely bad, but Undoubtedly its birth, created a precedent for computer audio technology.
In this era, no one has thought about the effect of making a computer sound. Until later generations, after more than ten years of development, multimedia PCs have become the standard. Everyone can use their own PC to listen to CDs, play audio games, and use qq. Use chat tools to talk, almost everything has to do with PC audio.
It can be said that with sound, there is a colorful multimedia world.
Qiu Xiaojun is still a boy and has his own focus. Qiu Xiaojun feels that letting the computer make a sound is very attractive to him. He must complete this project.
Qiu Xiaojun is very persistent.
Lisa’s Chinese pronunciation is very standard. I ask Xiaojun not to look back, and directly said:
I want to make the computer make a sound. I soldered a control circuit board myself and hope to integrate it into the computer. However, no matter how I modify it, it Can't make any sound."
No one has participated in this project of Qiu Xiaojun. It is only for Xiaojun's own needs to let the computer make a sound. Almost everyone here thinks it is a fantasy.
The speaker uses an analog signal, and what the computer can handle is a digital signal. The two cannot be mixed. Therefore, if you want to make a sound, you need a digital-to-analog conversion circuit to convert the digital sound signal used by the computer into a speaker and other equipment. The analog signal used, and then the amplifying part of the analog circuit, finally pushes the speaker to make a sound.
In the sound card of later generations, there is a dedicated sound control chip to complete this conversion, but now, Qiu Xiaojun alone can’t handle it. He just wants to use the function of the CPU to collect and organize the data. , Of course there will be more problems.
Lisa bent down and looked at the computer screen. Her hair drooped unknowingly, and some fell on Qiu Xiaojun's body, and the scent of Ruowu was also entering Qiu Xiaojun's nose.
Qiu Xiaojun at this time can be said to be the beginning of his love, but he has no interest in men and women, and technology is what he tirelessly pursues.
I ask Xiaojun to look at Lisa, very focused.
"I think it's the problem with this sampling code." Lisa said: "We can increase the sampling rate appropriately."
"However, that would increase the burden on the CPU, and I dare not design it too high."
"What's the matter? It was a waste of CPU resources to let the computer process the sound. Change this to 10,000." With that, Lisa began to modify the code.
If you want a computer to process multimedia data, it is a waste of CPU. After all, it is a huge amount of data. Only after the CPU continues to improve, multimedia computers can enter the lives of ordinary people. You can play games and watch movies. , CPU usage is quite high.
Now, Lisa doesn't care whether the CPU is working at full speed, she only cares whether the program can run, everything has to wait until the program can run.
Looking at Lisa's back, Qin Guan admired him very much. He knew that Lisa should be sent earlier!
The system in my brain is quite complicated. I don’t even know about it. I can still be thoroughly studied by Lisa. I can also provide research loopholes, arrange backdoors, etc. It can be said that Lisa is definitely a genius in this area. .
Now, it is even more important to simply deal with a computer sounding program. Even Qin Guan feels that if there is a problem with the circuit, Lisa can pick up the soldering iron and re-solder the upper circuit.
Only hearing the crackling sound of the keyboard, Lisa had already begun to modify the code.
"Is this really okay?" Qiu Xiaojun was still suspicious, looking at the beating characters on the screen, the compilation was completed, and Lisa started the system.
"Hi, hello!" At this moment, a simple sound was emitted from the speaker.
The sound is very simple, without any emotion, dry, the diaphragm of the horn seems to vibrate unwillingly, full of a mechanical feeling.
"What sound?" Hearing this sound, Ni Gong was also taken aback and shouted to the side who was completing the boot screen at the other end confessing to himself.
"Successful, successful!" Qiu Xiaojun stood up happily, and actually stood directly on the chair. After a few beats, he suddenly realized that the one who just helped him modify the code was actually a big sister?
"Are you?" Qiu Xiaojun asked curiously. The most famous programmers in the country have gathered here, and each of the later batches has been very respected by Qiu Xiaojun, and the level is very high. However, this one in front of you Qiu Xiaojun didn't know the woman, even Qiu Xiaojun felt that this woman's appearance was very strange, she didn't look like a Han.
"My name is Lisa, you can call me sister Lisa." Lisa stretched out her hand: "We can make friends, and we can come to me if we encounter problems with the program in the future."
At this moment, the people around are still in surprise, what? Does the computer actually make a sound? Did it really make a noise? Even Gong Ni rushed over: "How is this done?"
"I suggest that at our press conference tomorrow, we can make our Hanxin Computer, say a word, it will definitely surprise the world." Qin Guan said.