[Column] The science of frequency and music that improves concentration
Column en Concentration Frequency Science![[Column] The science of frequency and music that improves concentration](/../assets/images/column-concentration-music-relation.webp)
Introduction
Text: mmr｜Theme: The structure of music that maximizes concentration, deciphered from the relationship between sound frequencies and brain waves
Music is not just entertainment. Certain sounds accelerate thoughts, certain rhythms erase the sense of time. In particular, what is called ““sounds that improve concentration’’ can be explained not by sensory preferences but by the relationship between physical vibrations and neural activity.
Although the word frequency is often treated mysteriously, it is actually a very concrete phenomenon. Air vibrations are converted into electrical signals through the ears, which stimulate specific areas of the brain. This chain forms a kind of ““brain mode’’ called a state of concentration.
In this column, we will organize the relationship between frequency, brain waves, and musical structure along with historical trends, and clarify the conditions for sound that actually improve concentration.
Concentration is not an accident, but a state that can be designed.
What is frequency?
The true nature of sound is vibration
Sound is the vibration of air, and its frequency is called “frequency (Hz).” For example, 440Hz means a sound that vibrates 440 times per second. The higher the value, the higher the sound, and the lower the value, the lower the sound.
The audible range for humans is said to be approximately 20Hz to 20,000Hz, but it is not the simple audible range that is related to concentration, but a specific frequency range that is associated with brain responses.
In addition to the top image, we will prepare a diagram that visually conveys the “relationship between frequency and concentration” in a form that can be used as is for Jekyll. It can be embedded as is in mermaid format.
Relationship with brain waves
The brain constantly emits electrical rhythms called brain waves. Representative ones are as follows.
*Delta waves (0.5-4Hz): deep sleep
- Theta waves (4-8Hz): meditation/light sleep
- Alpha waves (8~13Hz): Relaxed state
- Beta waves (13-30Hz): Concentration and alertness
- Gamma waves (30Hz or higher): Advanced cognitive activity
Correspondence diagram between frequency bands and brain waves
Importantly, external sound stimulation can affect these brain waves. This is called “brainwave entrainment.”
Sound is not something that is heard with the ears, but is a phenomenon that is synchronized in the brain.
Brain entrainment with binaural beats
Illusion created by two frequencies
Binaural beats are a phenomenon that generates differential rhythms in the brain by applying sounds of slightly different frequencies to the left and right ears.
for example:
*Left ear: 200Hz *Right ear: 210Hz
At this time, the brain senses the rhythm of 10Hz. This does not actually exist, but is generated in the brain.
This 10Hz corresponds to alpha waves and is said to induce a relaxed state.
How binaural beats work
Experiments and Applications
Research on binaural beats has progressed since the 1970s, and it has been suggested that certain frequency bands may affect attention and memory.
However, it is important to note that this is not a one-size-fits-all “magic frequency.” The effects vary from person to person and depend on the environment, volume, and duration.
What creates concentration is not the frequency itself, but its relationship with the brain.
Music structure and concentration
Rhythm stability
One of the characteristics of music that maintains concentration is rhythmic stability. Music that has a constant tempo and few changes saves cognitive resources because the brain doesn’t have to do extra predictive processing.
In particular, the following tempo bands are considered valid:
- 60-80 BPM: Relax and concentrate *90~120 BPM: Concentration to increase work efficiency
Relationship between tempo and concentration state
Harmony and tone
Overly complex harmonies and strong melodies steal the brain”s attention. On the other hand, simple chord progressions and sustained sounds (drones) don”t get in the way of thinking.
This is why ambient and minimal music is suitable for working.
Repetition and prediction
The human brain is excellent at pattern recognition. Music with a consistent loop structure increases predictability and creates a sense of security. In this state, it is easy to enter a “flow state.”
Good work music is music that makes you feel invisible.
Frequency Myths and Scientific Facts
432Hz and 440Hz controversy
The theory that ““432Hz is natural and has a healing effect’’ is widely known, but there is limited scientific support. The difference from the standard pitch of 440Hz is minute, and no clear physiological differences have been confirmed.
Solfeggio Frequency
There are also claims that “special frequencies” such as 528Hz are effective for DNA repair, but there is insufficient scientific evidence for this as well.
What really matters
Research has shown that the following factors are more important:
- Volume (not too loud)
- Repeating structure
- External noise isolation *Personal preferences
Environment and habits influence concentration more than the mystery of frequency.
Frequency bands that are easy to concentrate on (acoustic)
Chronology: History of research on concentration and sound
Concentration music has changed with the evolution of science and technology.
Sound blueprint: Structure that creates concentration
Ideal sound conditions
Sound conditions for maximizing concentration can be summarized as follows:
- Frequency band: Centered on mid-low range (200Hz to 2000Hz)
- Tempo: Constant (60-100 BPM)
- Dynamics: little change
- Melody: Subdued or None
- Noise: Use of white noise and natural sounds
Practical approach
- Use noise music in noisy environments
- Ambient music and drones for deep concentration
- Add a light beat to simple tasks
The important thing is to ““change the sound depending on the purpose.’’
Music is not something you choose, but something you use properly.
Sound and flow state
What is flow?
Flow state, coined by psychologist Mihaly Csikszentmihalyi, is a state of complete immersion. The sense of time disappears and work efficiency is maximized.
Music acts as a gateway to this state.
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Relationship between flow state and sound
Why sound helps flow
- Block out outside noise
- Adjust your internal rhythm
- Limit your attention
As a result, it becomes easier for the brain to focus on one task.
Flow is guided by environment, not talent.
Conclusion
There is no “universal frequency” for music that improves concentration. However, it is possible to design an environment that facilitates concentration by combining frequency, rhythm, and structure.
Scientifically important are synchrony with brain waves, predictable structure, and control of noise. If you understand these things, you can create the optimal sound environment for yourself.
Music doesn’t just flow. It is a tool for guiding thought and a device for creating a state of concentration.
Concentration is a technique that allows you to tune in through sound.
