<Anchor>
Today (23rd), there was a lot of talk about whether we could trust the explanation of the presidential office as it is, or what the real president said.
There was even a video that analyzed the president's voice and removed the noisy surroundings at the time.
Reporter Lee Kyung-won investigated whether it could be accurately identified.
<Reporter>
President Yoon's remarks, I tried to remove the noise using SBS equipment.
I'll listen to it twice.
[If you don't approve, 'Biden'?]
[If you don't approve and 'blow'?]
How does that sound?
Online, too, the results of your own analysis such as waveform analysis and syllable analysis are being uploaded.
The conclusion is all different.
SBS reporters contacted about 10 domestic voice analysis experts, professors, and institutions.
First, we asked about the scientific negative test method.
According to the international phonetic code for writing sounds, they are evaluated by speech judgment experts, analyzed by computer programs, or use their own AI.
For example, the National Forensic Research Institute uses the voice analysis equipment CSL.
Experts say that scientific analysis is possible through these three methods.
Specifically, regarding the request to verify whether it was Biden or if it was blown, all 10 phonetic authorities who contacted SBS declined an official interview.
However, he explained that some analysis methods that are being uploaded online are controversial to be scientifically judged.
Voice analysis should be performed without knowing the content, but there are many analyzes that do not.
Let's hear it again.
If you consciously listen to it as 'Biden', it can sound like 'Biden',
[if you don't approve, 'Biden']
consciously as 'if you blow', it may sound like 'if you blow it'.
[If you do not approve and 'blow']
In particular, the original video contains noise such as hum and music.
Although our reporters initially removed this noise and heard it, experts say that ambient noise can also affect the ability to hear words and should not be tampered with.
We heard the results of analyzing the president's voice with our own program from an expert who requested anonymity a while ago. We recognized the word 'because of shame', but there was a lot of noise, so 'Biden' or 'Blow it' was not recognized. said to have been
It seems that modern technology can accurately distinguish them, but the truth is that it is difficult to give an answer with little error scientifically in the current situation.
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