After getting on the bus, Du Xinghe found that there was a half-meter-long keyboard-shaped arranger on the back seat, with many buttons on it, but no keys, which looked quite complicated. He had never seen such a thing before, and he had never seen it in the previous person, and it seemed that this thing was made by Lu Qin himself.

"What's that? Can I take a look? "Du Xinghe is always interested in strange instruments.

"It was an electronic piano I made myself, and it was still relatively naïve, and it took some samples of piano sounds."

Du Xinghe was very curious to hold the so-called electronic piano to his lap, and took a closer look, the dozens of black, black and white buttons arranged on it were really a bit like the keys of a piano. Although it is divided into three rows, the rehearsal method of the black buttons in groups of two or three is exactly the same as the black keys on the piano.

"I'm writing a recording software that's compatible with the Floating Cloud system, and when it's done, the electronic piano will be able to record music on a regular home computer. However, the current mainstream computer processor is not fast enough, no matter how I correct the algorithm of the software, I can't transmit the sound data of this keyboard to the computer in real time, and it will always lag a little, maybe the piano sampling source of my keyboard is too big, and the computer can't bring it. But it can't be helped, if you want to have a beautiful sound, you must ensure the originality of the sound source......"

Starting the car, Lu Qin said to herself, but found that Du Xinghe was fiddling with the keyboard and was not interested in listening to her at all.

Lu Qin had no choice but to smile and turn on the unmarked switch on the side of the keyboard for Du Xinghe, and took out a sound source cable from the glove box, connecting the keyboard with the manually modified CD sound inlet on the center console of the car.

"This keyboard doesn't make its own sound. You need to be connected to a computer or stereo to make a sound. There's a sound card that I soldered myself, and it works great. I've connected you to the car stereo, you can play it. ”

Before Lu Qin's words fell, Du Xinghe had already played a pleasant melody with a row of buttons in the top row of high registers.

Pressing the button of this keyboard, it feels completely different from pressing the piano key, the button is astringent, and there is no wonderful feedback power of the piano key, so after playing a short paragraph, Du Xinghe stopped playing.

Then he said to Lu Qin: "The sampling rate of your keyboard is not as high as you say, right?" I don't know if it's because the sound in your car is bad or what. In my ears, the piano notes of your keyboard. It's accurate, it's accurate. BUT THE SOUND QUALITY IS NOT AS GOOD AS CD AUDIO, SLIGHTLY BETTER THAN THE RADIO SOUND QUALITY, AND THE ESTIMATED SAMPLING RATE WILL NOT EXCEED 32KHZ. ”

"Why are your ears so smart!" LU QIN'S EYES WIDENED, AND HE LOOKED AT DU XINGHE IN SURPRISE: "THIS IS THE SAMPLING RATE OF 32KHZ!" ”

"REALLY ONLY 32KHZ?" Du Xinghe was speechless. Instead, he gave Lu Qin a lesson: "Teacher Lu." You should know. Only when the sampling frequency of the sound source is higher than twice the highest frequency of the sound signal can the sound represented by the digital signal be restored to the original sound. THIS IS ALSO THE REASON WHY THE GENERAL CDWEISHENME HAS TO REACH A SAMPLING RATE OF 44.1KHZ, WHICH IS TO MEET THE SENSITIVE LIMIT OF ABOUT 20KHZ FOR THE HUMAN EAR, SO AS TO ACHIEVE THE MOST REALISTIC RESTORATION OF THE SOUND. But this 'real' restoration. It's just the 'truth' that most people hear. FOR A PROFESSIONAL, YOU DON'T REACH THE 192KHZ SOUND SOURCE SAMPLING RATE, AND YOU ARE EMBARRASSED TO SAY THAT YOUR SOUND HAS A HIGH DEGREE OF RESTORATION? ”

Du Xinghe's tone is a little arrogant, because from the heart, he is a traditional academic school, and he has been exposed to real musical instruments since he was a child and feels the natural sound beauty of musical instruments, so he is very resistant to computer music in his heart.

Although he later had to go with the trend and also started making computer music, he always despised this kind of music at the root.

Lu Qin heard Du Xinghe say this, and was a little impressed by Du Xinghe. In this era, there are still very few people who play computer music, and the average person doesn't understand what the sample rate is, and many professional musicians understand sequencers, arrangers, audio tracks, and keyboards, but they don't understand the essence of sound as a signal.

And Du Xinghe could hear that the sampling rate of this electronic keyboard was 32KHZ, which was enough to shock her!

DU XINGHE LATER SAID THAT ONLY REACHING 192KHZ SOUND RESTORATION IS GOOD ENOUGH, WHICH MAKES HER FEEL THAT DU XINGHE HAS DONE THIS! Du Xinghe must be an expert in computer music, and he is estimated to be better than her! How could this not impress her?

After all, she is an expert in the field of computer systems, and playing computer music is just a hobby, not a professional.

IN HER OPINION AS A SYSTEM EXPERT, THE SAMPLING RATE OF 32KHZ IS ALREADY VERY DIFFICULT FOR THE GENERAL COMPUTER TO PROCESS, AND THE SAMPLING RATE OF 192KHZ IS HOW POWERFUL THE COMPUTER CAN HANDLE IT! You know, it's not played, it's programmed into the computer!

It is estimated that only a special sampling computer for the music industry can handle such a high sample rate, and it is impossible for ordinary home computers to have such a fast processing speed.

Lu Qin simply stopped arguing with Du Xinghe, because the two of them were not talking about the same thing at all, one was about the popular field and the other was about the professional field.

After the car started, the two no longer discussed the issue of sampling rate, and Du Xinghe stopped playing the "electronic piano" in his hand. Because to him, it was a toy, not a real musical instrument.

The two talked about a lot of other things, and Du Xinghe knew that Lu Qin was originally from South China, and her mother and Chen Hua were best friends, so she called Chen Hua Aunt Hua. And because she likes music very much, she herself has a good relationship with Chen Hua, she always asks Chen Hua for some music questions, and even always wants Chen Hua to help her make records!

"Mr. Du, do you think my voice is not distinctive enough? Aunt Hua always told me that I had cut off the idea of rejecting the record. ”

"Your voice is very distinctive, and it's perfect for singing children's music. If you really want to make a record, consider a series of nursery rhymes, or an episode of cartoons. ”

Du Xinghe was not sarcastic about Lu Qin, but pragmatically giving advice to Lu Qin. Lu Qin's voice is very immature, with an obvious baby sound, a bit like Fan Xiaoxuan in the early days.

Lu Qin flattened his mouth and said, "Are you colluding with Aunt Hua to attack me?" Can't I sing anything else? I want to sing love songs. ”

Du Xinghe did not comment on this. After all, everyone has the right to dream.

"Mr. Xiao Du, I can pay for the record by myself, Aunt Hua said that you are a genius, maybe only you can help me."

Lu Qin's words made Du Xinghe stunned, and only then did Du Xinghe understand that Chen Hua Weishenme was so active in asking Lu Qin to entertain him, it turned out that he was asking for him! (To be continued......)