Chapter 319: Decoding the Soul (3)
Back at the Criminal Investigation Bureau, the two detectives handed the recorder to Liu Ye.
"Professor Liu, our mission has been completed. Now it's up to you." Sun Liang smiled.
"Don't worry, Captain Sun." Liu Ye took the recorder with a smile...
There was nothing to do in the morning. Professor Yang was having a video conversation with his disciples in Beijing through his iPad, discussing information about scientific research topics.
Carrying the recorder that had just recorded the sound of the bridge shell force, Liu Ye walked to Professor Yang.
"Professor Yang, Captain Sun and his team have already recorded the sound of Qiao Keli." Liu Ye.
"Ah, that's pretty fast!" Professor Yang quickly ended the video call with the person far away and took the recorder...
After turning on the recording, Professor Yang and his team listened to it several times in a row.
"Well, the sound of this bridge shell force is quite nice. He is a good candidate to be a hypnotist. What a pity." Professor Yang.
It turns out that for hypnotists, the quality of the voice is very important. If the voice quality is good, the patient will feel comfortable listening to it and easily enter the hypnotic state; if the voice is unpleasant, it will cause the patient to relapse.
"His voice has a pure quality, clean timbre, and full notes, especially the bass, which is very pleasant to the ear," Professor Yang commented.
"Now, you two should do something. Quickly synthesize the speech according to what is written on this paper. After the synthesis, we will be the audience and listen to it first..." Professor Yang assigned tasks to the two disciples.
"Yes." The two young doctoral students began to work. They found Sun Liang and followed him to the electronic technology room to start the speech synthesis work.
Speech synthesis technology is now very mature. According to reports, a device produced in a certain country can synthesize a person's voice in under a minute, with the synthesized voice being over 80% similar to the original voice.
The principle is probably this:
The technicians first look for key features from the specific target rap sound samples:
For example, the tone "color";
For example, tone;
For example, syllables and pauses
There are also catchphrases and so on...
These key features are the DNA of each Rao voice. Every Rao voice has a completely different DNA. If we find the DNA, we will find the unique genes of each person's voice!
After the criminal police obtained the sounds of the bridge shell force, they used instruments to analyze the sounds. After finding the DNA of the bridge shell force sounds, they digitized the characteristics of the bridge shell force's timbre, pitch, syllables, and pauses... Then, based on new requirements, such as the new content written by Professor Yang's students, they designed the data, and finally, restored the syllable data into sounds.
The sound synthesis was quick. However, the synthesized sound needed to be compared with the original recording, and then auditioned and fine-tuned to see what needed improvement... Thus, the synthesis and debugging of the sound for the new axle shell force command took an entire afternoon...
When it was almost time to get off work in the evening, two disciples happily came to see Professor Yang with the new Hecheng sound.
"Okay, now let's listen to see if the synthesized sound sounds like..." Professor Yang turned on the recorder.
First up is a video of Qiao Keli's real voice recorded by Sun Liang and the criminal police at the scene...
Then, the new sound of the synthesized bridge shell force is played...
"Oh, it really looks alike! The similarity is over 98 percent." After listening to it, Liu Ye couldn't help but sigh that technology is advancing at a rapid pace, and even voices can be imitated so realistically!
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