Entertainment: Is this how you play music?!

Chapter 200 Abstract disciplinary collision.

Li Can originally thought.

These things are going to be hard and difficult.

After all, different professions are like different worlds, and Li Can would never dare to pretend.

But what I didn't expect was.

The mountain across the way is a rockery.

Now that you have decided to do something for the hearing-impaired, you need to understand what hearing impairment is and what causes it.

Under Tu Jing's introduction.

Li Can suddenly realized.

There are many sound-sensing cells in the human ear. These cells sense different sounds, including low, medium and high frequencies.

Hearing impairment does not mean deafness, it is just a simple hearing loss that more or less affects life.

In fact, the proportion of people who are truly medically diagnosed as deaf is quite small.

However, there are more than 27 million people with varying degrees of hearing impairment across the country.

"Professor Tu, quite a number of hearing-impaired people cannot distinguish the timbre and pitch of specific musical instruments, and the sounds they perceive are seriously distorted. Why is this?"

On this issue.

Li Can cares the most.

This directly relates to the difficulty of doing things.

I originally thought that Tu Jing would say something that would be very difficult for me to understand.

But it was not until Tu Jing used the most unfamiliar words to express the most familiar content.

Li Cancai was a little dumbfounded.

"Well, this actually involves the vibration of objects. You should know that vibration is not a single wave during propagation, but a very complex structure. The standing wave principle describes this relationship law."

"Most hearing loss starts with the most sensitive high-frequency sensory cells. Therefore, many hearing impairments caused by various congenital or acquired reasons are high-frequency hearing loss."

"When some of their sensory cells are damaged, their world becomes dull and they cannot perceive sounds of certain frequencies. This is information loss. You know harmonics, right?"

"."

Tu Jing tried hard to give Li Can a simple explanation from his professional perspective.

However, Li Can had a preconceived notion that this was interdisciplinary content and required caution, and that it must be difficult to understand.

However, the more I listened, the more something felt wrong.

He immediately frowned and began to think.

"Wait a minute, your standing wave theory, um, harmonics, damn, it's so familiar, yet so strange."

Li Can thought for a moment.

suddenly see the light.

But his whole expression became quite distorted.

"That's too fucking abstract."

Li Can couldn't help but complain, which made Tu Jing confused.

The founder of abstraction actually feels that current events are somewhat abstract?
"What's this about fundamental harmonic standing waves? Holy shit, isn't this just overtones, man?"

"what?"

Tu Jingren was also stunned.

Immediately he nodded.

"Ah, yes, yes, that's the overtone."

"."

Li Can really couldn't hold it anymore.

This conversation is so abstract, it's just a cross-server chat.

Translate those harmonics into "overtones", and you will understand it now.

The natural world is amazing.

The production of any sound is not a single vibration.

For example, when a musical instrument emits basic vibrations, it will generate mechanical waves in the air, and these harmonics have a fractional relationship with genes.

A simple description is that.

Everyone thinks that sound is a line.

But in fact it is a rope woven from threads.

The basic reason why people can distinguish timbre is the existence of overtones.

Tu Jing expressed it this way: "harmonic content and proportion affect timbre."

Can't understand.

But if we say that "overtone content and proportion affect timbre".
Li Can understood everything instantly.

The violin and the flute play the same pitch, and different singers sing the same pitch, but the feeling is obviously different. The reason is the widespread existence of "overtones".

It is precisely because of the score relationship.

Therefore, in addition to genes, the distribution proportions of various overtones are also quite complex, some high and some low.

For the hearing-impaired, there will naturally be a considerable portion of overtones that they cannot perceive due to hearing loss.

So it sounds distorted.

A melody, 1726271. Ordinary people hear the highs and lows of the original version, but the hearing-impaired people may hear 1020201.

A sound contains overtone information, perhaps 17177, but in the ears of hearing-impaired people, they can feel 1 but not 7, so it naturally sounds weird.

“This is exactly the same bad sound as the Notes app.”

Li Can started to complain.

“It’s clipped.”

"Ah, yes, yes!"

Tu Jing nodded repeatedly.

The two looked at each other.

Everyone was speechless.

"That's too fucking abstract."

“Yeah, it’s a bit abstract.”

".But if you understand it this way, it will be easy to deal with. This is not a big deal at all."

Li Can curled his lips.

Take a deep breath.

The original tension and depression also eased a lot.

For normal music, great emphasis is placed on dynamic range for the sake of experience.

However, for a considerable number of hearing-impaired people, information beyond a certain frequency cannot be received, so they naturally have no feeling when listening and feel that the music is fragmented.

But if you don’t worry about the treatment issue, and don’t worry about the adjustment of the APP model of this cochlear implant.

How about starting directly with the song?
Isn't that the case?!
"I thought there was a huge mountain between music and the hearing-impaired, and that if I wanted to make it happen, I would have to move the mountain. I didn't expect that there might be a mountain, but more often than not, there was just a piece of glass between us."

Li Can couldn't help but sigh.

"Then just smash it."

"You are planning to..."

Tu Jing was a little confused.

I couldn't help but ask out of curiosity.

"That is to say, for the vast majority of hearing-impaired people, it's not that they can't hear, but that they can't hear completely."

Li Can sat directly in front of the computer.

Although the acoustic software in front of you is not music editing software.

But it can still be used as a reference.

“Since most hearing-impaired people have high-frequency or mid-to-high-frequency hearing loss, why not just make a low-frequency version of the song?”

"In this way, even in the ears of the hearing-impaired, the music becomes complete, rather than missing this or that."

Li Can's words immediately made Tu Jing suddenly enlightened.

I held my head in disbelief, I never thought there would be such a solution.

Communicating with other industry practitioners is indeed the right choice!

"Let me explain to you. If it is at the beginning of production, it is very simple. You can systematically set each tone in a targeted manner, transfer it from the mid-high frequency to the low frequency, and try not to exceed 1000 Hz, or even 800 Hz."

“If it’s an old song, you can separate the vocal accompaniment first, and then have a professional producer adjust each part of the song and do an octave shift.”

Li Can described Tu Jing.

"That is to say, normal people can also listen to this kind of low-frequency songs, but they will feel very muffled, and the sound quality and dynamic range will not be comparable to the original version. But for most hearing-impaired people, the music will become complete."

After saying this.

Tu Jing suddenly became excited.

His lips trembled slightly.

【whole】

This is something that many people can only encounter but cannot hope for.

".Is this considered an overall downgrade?"

"No, it's not just a matter of lowering the pitch overall."

Facing Tu Jing's problem.

Li Can’s answer was very detailed.

“For example, if the vocals in this melody are out of key, then the vocals should be lowered and other parts should be adjusted. However, if the vocals are not out of key and there are bass and piano in the accompaniment, the vocals should be modified by both lower and higher octaves.”

"Then the bass can be left alone and the piano can be shifted an octave to make it fall within the range." "And in order to prevent the sound from being overly distorted or to make it as clear as possible, we also need to consider whether the overtones are out of range, how much they are out of range, and whether the lost information is acceptable."

“It requires special production, but it won’t be a big deal.”

"."

After getting Li Can's reply.

Tu Jing was really excited.

Great news has arrived.

Tu Jing's lips trembled slightly.

It does not sound too difficult, but the key question is whether anyone has thought about it and whether anyone has done it.

"In our country, more than 45 children have mid- to high-frequency hearing loss and can only perceive low frequencies in sound."

Tu Jing held Li Can's hands with both.

Eyes slightly red.

"If you can really do it, then you are giving more than 45 children the equal right to enjoy complete music!"

"It's too early to say that."

Li Can chuckled and shook his head.

"It's just a hypothesis. We need to experiment first to get the truth."

"Yes! Experiment! Experiment!"

Tu Jing couldn't sit still anymore.

although.

The mode on the cochlear implant app has not yet been resolved.

But discovering this unique perspective is more important than anything else.

Because this can take into account people who wear hearing aids, or ordinary people who do not need to wear hearing aids but have varying degrees of mid- and high-frequency hearing loss.

Hearing loss.

It may make people seem slow to react and stupid. It’s not that they can’t hear, but sometimes they can’t hear clearly.

Such people want attention but are afraid of getting attention.

Maybe not the majority, but definitely the silent ones.

If the "low-frequency song" experiment can really succeed.

The significance to society is definitely more than a little bit.

Move when you say it.

This was the first time Li Can met someone who was more proactive than himself.

Following Tu Jing, I came to Dr. Fang Wen’s office again.

Seeing the two of them coming with happy faces.

Professor Fang Wen was very surprised.

He glanced at Li Can and joked.

"It's you? You haven't given up yet?"

"Haha! Lao Fang, if you give up, you will really miss out on an attempt of great significance!"

Tu Jing laughed and hugged Fang Wen.

Even spoke with gratitude.

"Old friend, thank you so much for introducing Li Can to me."

"Hmm? Could it be that you guys have really come up with something?"

Fang Wen was very surprised.

Looked at Li Can curiously.

"Of course! Lao Fang, he's not as good as you in medicine, and he's not as good as me in acoustics, but when it comes to music, there's absolutely no comparison between us!"

Tu Jing sat down and explained with a smile.

"In the medical field, the most common and most common hearing loss is high-frequency, mid-to-high-frequency hearing loss."

"We can't solve hearing problems, but we can solve the problem of hearing-impaired people being unable to listen to music. So the purpose of coming here is to experiment with the effect of low-frequency songs!"

"!!"

Fang Wen looked at Li Can in shock.

Low frequency songs.

This kind of thing is unfamiliar to doctors, but in the eyes of top music producers, it is not impossible to achieve.

"Do you have a sample? Quick! Let me hear it!"

Li Can nodded.

Take out your phone.

Play a melody that was experimentally condensed for Fang Wen to listen to.

Put on your headphones.

Fang Wen listened very carefully.

The feeling of low-frequency songs is a bit like the full-loss sound quality of normal songs.

But rather.

The drums and bass will sound clear and obvious.

This kind of low frequency song.

A normal person would feel very uncomfortable if he listened to it for more than one or two minutes.

There may even be a slight nausea physiological reaction.

This is a natural phenomenon resulting from unbalanced audio reception.

But the more he felt physical discomfort, the more excited Fang Wen became, and the more he felt that this strange trick seemed to be quite feasible!

"Missed notes, shorter scales, distorted sound effects, this is music to the ears of people with mid- and high-frequency hearing loss."

"Complete. Under the condition of completeness, what does the loss of a little detail matter?!"

Fang Wen took off his headphones.

Exclaimed excitedly.

For the first time, it even felt like such an attempt might actually be feasible!
"Well, I'll arrange for patients to be tested with this song, you guys."

“It’s not just this song.”

Li Can spoke with a smile.

"Time is tight, and this is just a sample. I plan to try to consider the frequency range that hearing-impaired people can accept when composing, so that the sound quality can be better."

"how long?"

"Three days, because Lin Feng is going to have a concert. After the concert, he can work overtime during the break."

"it is good!"

Hear Li Can's answer.

Professor Fang Wen agreed immediately.

Actively promoting related experiments.

There are really a lot of patients.

The situations are different and the ages are also different.

Only with enough samples can we draw more stable conclusions.

And in the recording of the song.

It doesn't require too much effort either.

Carefully crafting a song only to have it overturned due to actual conditions will increase the time cost.

Therefore, only basic models and samples are provided to facilitate gradual changes during the experiment.

soon.

After communicating with each patient and their relatives.

Patients who agreed to take part in the experiment were exposed to this unique "song listening test" for the first time.

"Can you hear the sound?"

"Can't hear it."

"You can't hear anything at all?"

".It seems a little bit, but it also seems not."

Professor Fang Wen is asking the testers about their feelings.

Li Can and Tu Jing were taking targeted notes on the side.

The test subject is a young man in his twenties who has severe hearing loss and needs to wear a hearing aid.

He can speak, but his speech is a little shaky.

"This person's name is Chen Jun. When he was 9 years old, he had a high fever and his ears were damaged."

Professor Fang Wen explained to Li Can and Tu Jing.

"That is to say, when he was a child, he actually had some knowledge and feelings about music, but he was too young, and now his perception of music is very weak."

While talking.

Professor Fang Wen clicked on the audio files of several low-frequency songs that Li Can brought out.

"Next, I will play you a 15-second uninterrupted song. We hope to learn more about your feelings about this music."

Chen Jun was a little nervous, but still nodded.

"Listen to these fifteen seconds of music and see if it is coherent."

(End of this chapter)