About my dummy head service

■ What is your dummy head service?

Flagship complete wireless earphone ZE8000 This is a unique service that maximizes the 8k Sound "8K Sound" of ZE8000.

By using a special measurement method, "self -dummy head" is formed from the elaborate data obtained from the upper body for each individual, and by putting it into the "virtual sound environment" developed independently, the sound tailored to each person from the obtained data. Apply the alignment to ZE8000.

・ Based on the shape data measured not only for the anchle but also at 864 meters of the upper body as a whole, the sound physical simulation of Comsol*1 is derived precisely.

・ The original software developed by FINAL controls the audio physics of your dummy head in the virtual sound space

In addition, a silicon earpiece exclusively for self -dummy head, which has been processed based on the ZE8000 Mk2 dedicated earpiece that has improved the degree of sealing and holding power. We will achieve "improvement of tone" from a complex perspective.

* The only model that can be implemented is [ZE8000]. [ZE8000MK2] is not a model to be served.

■ What is the tone?

The tone is the source of all other impressions that you feel when you hear the sound, excluding the sound height, the size of the sound, and the direction of the sound.
For example, when you know only the sound that something dangerous is approaching, you know the position of the sound itself and guess what is itself from the sound. The former is the direction of the sound, and the latter is the recognition of the tone. We can recognize the tone, so we can understand the differences between various instruments and voices only.
In other words, tone is the most important factor in enjoying music composed of different instruments and voices.

My dummy head service aims to make it more enjoyable than music by improving the sound reproduction performance of the content in earphones.

■ Silicon earpiece exclusively for dummy head service

Since it is necessary to perform sound alignment with constant conditions such as the mounting position and internal volume, which is the premise of this service, my dummy is processed based on the ZE8000 Mk2 dedicated earpiece that improves the degree of sealing and holding power. Uses a silicone earpiece for head -only.

A new style earpiece that secures fit and sealing firmly in the ear canal and the ear -shelledness (the part where the earphones fit).

■ Points of your dummy head service

1: Implement personal optimization of tone, which is different from the front position of existing services

2: The ZE8000 dedicated application "Final Connect" is updated to your dummy head service customization ver

3: ZE8000 Mk2 dedicated earpiece, which has been processed for this service dedicated silicone earpiece

4: Laser engraving your dummy head authentication mark on the housing

Flow from application to handing over

■ Day 1 (required time: about 2 hours)

[STEP1]: Custody of the ZE8000 you bring

[STEP2]: Explain your dummy head from the staff

[STEP3]: upper body 3D scan

[STEP4]: 3D scanning near the entrance of the anoperia and the ear canal

[STEP5]: Measurement of physical characteristics of the ear canal

[STEP6]: Rental of alternatives

■ Day 2 (Time required: about 3 hours)

[STEP1]: Final alignment by acoustic test

[STEP2]: App functional explanation for dedicated dummy head service

[STEP3]: Returned alternatives

[STEP4]: Confirmation of delivery date and destination

■ Delivery

We will send your own dummy head applied ZE8000 to the specified address at the specified date and time.

Details of my dummy head service

■ The concept of my dummy head service

FINAL uses the unique concept of a virtual sound environment to research and develop events that listen to content produced by 2ch stereo sound sources in transducers ( * 2). This is a concept that exceeds the limits of the process of physical measurement and subjective evaluation mainly in conventional development of trendyer products.
By introducing a model called "Dummy Head" created based on the elaborate physical shape measurement in this virtual sound environment, we have been conducting research and development for the services announced this time. 。 By introducing your dummy head into a virtual sound environment, you can verify the two important hearing phenomena, "sound direction" and "tone recognition". When we listen to music with earphones, we enjoy the sounds of each instrument and vocals with the position of each instrument and vocal sound.

This figure is an easy -to -understand explanation of the diagram published in the AES Journal in 1986 by Günther THEILE in Germany. It is a model that indicates how the sounds coming to the eardrum are physically and hearing psychological processing. The important thing here is that spatial listening and gestalt recognition are processed on another stage. Gestalt recognition is a psychological concept of recognizing the gestalt, that is, a form, and can be understood as recognizing the sounds of each instrument and vocal in the music listening described earlier.

Based on the model shown by Günther THEILE, you can handle the direction and tone of the sound independently. This time, the service announced by FINAL is not the direction of sound, but aims to improve the quality of the recognition of tone. The acoustic physical characteristics obtained from my dummy head introduced in the virtual sound environment introduced earlier are used to improve tone recognition based on the concept of the model shown by Günther THEILE. As a result, the sound of musical instruments and vocals has been improved, and the balance between musical instruments and vocals can now be improved. The information obtained in this way is converted into data by simulation technology, and the data is handed over in your ZE8000.

■ Why measure the upper body

Listen to an ideal sound source (for example, an 響 響 room) and an ideal sound source (a complete full -directional sound source without a unique orientation frequency characteristics) together with multiple people in a flat distance from the sound source. And you can think that yourself and others are listening to the same sound. However, the body shape is completely different between the other people who are listening together. Therefore, the physical characteristics of the sound waves that come to the eardrum due to the effects of the head and torso and the diffraction of the torso are different for each individual.

However, under the above conditions, it is considered that they are listening to the same sound even if the body shape is different, so the hearing of the physical characteristics of the sound waves that appear in the eardrums caused by the body shape is the hearing of each person. It can be considered that it has been corrected to be approximately the same sound so that it can be perceived or recognized.

In an environment where you listen to sounds with earphones and headphones, the sound does not come from outside the body, and the sound emitted by the driver is directly given to the ears, so the above idea is no longer possible. In other words, even if you use the same earphones or headphones, others are no longer listening to the same sound as themselves.

Therefore, in order to discuss the sound of earphones and headphones, it is necessary to know how the individual body shape affects the sound wave when sound comes from outside the body. In the concept of FINAL's unique virtual sound environment, it is necessary to take into account the physical effects of different body shape for each individual on the sound that comes from outside the body, so the physical shape of the individual is measured. Based on the data, we are trying to optimize the sound presented with headphones and earphones.

Speech

* Dummy head HATS (Head and Torso Simulator)
Is a mannequin only for the head and fuselage of the person used in acoustic measurement.

HATS is a model with the average head, auric, and chest shape, and is used to estimate the sound wave that comes to the eardrum when a human enters any sound field. Therefore, the external ear canal and the anoperia are imitated especially with high accuracy. Generally, the artificial ears formed by a total oriented microphone for measurement equivalent to the eardrum and a simulator that mimics the ear canal are installed on the left and right of the head, and various measurements can be performed using this micron. Masu.

Hats is one of the important measurement devices in the development and evaluation of audio equipment and acoustic systems, and is also used for research and development of earphones and headphones. On the other hand, the dummy head means a simulator that imitates the head of the Hats, that is, the head of the human head, and is used for measuring headphones and earphones and binaural recording. Since the term Hats is generally less familiar, here is a commonly used dummy head, instead of Hats, a simulator containing the head and torso.

* An electrical sound conversion device that converts the transducer sound wave into an electric signal or converts an electric signal into a sound wave.

The former has a microphone, and the latter has speakers, earphones, headphones, etc. Trans deer is a particularly important device for audio technology that handles sound waves. Although audio devices other than transducers have changed dramatically with the development of digital audio signal processing technology, the transducer has improved sound quality by improving, but basically the conventional technology is still based on the conventional technology. I am. Many of the products that use the transducer currently on the market use diaphragms for electrical sound conversion. Trans deers that do not require laser technology and passionate dynamic technology have been studied, but it is necessary to clear several research issues to become practical products.

* In Comsolfinal, COMSOL's multi -fieldx software ()Comsol Multiphysics®() I am using acoustic physical simulation based on numerical analysis methods.