News MAZDA3's standard audio strength Mazda Harmonic Acoustics is a "good voice"?

It is not so much MAZDA3 as the standard audio sound of Mazda has greatly improved after it has become a new generation of products.

Configuration of MAZDA3 speakers. The BOSE sound system is equipped with 12 speakers, but the standard is 8.

The location of the bass box is here. The photo is a public relations photo of Mazda.

Sixth and seventh generation (that is, the current MAZDA3) front door speaker configuration.

The listening position can be selected in the driver's seat and in all seats. Try it in the driver's seat and you will find that the way you hear it is quite different.

Greenhouse mode is a simple and advanced choice.

The equalizer can also be selected from the preset content in the music genre.

There are a lot of adjustments, but it is not difficult to set.

MAZDA3 debut as the top batter of the seventh generation of Mazda merchandise, whether it's seats, pedals, brakes or suspensions, thinking thoroughly about what the ideal is, and devoting itself to development in order to get close to there. Audio systems are no exception. TEXT&PHOTO SERA Kota Mazda believes that it is important to make the following two points close to the ideal sound (below, partly refer to the Mazda Technical report 2019 No.36). 1. Correctly convey the message of entering the sound source 2. The dynamic range is enlarged by 1. With regard to the need to be careful, if there is little information in the audio source, the audio system can only reproduce how much correct information it conveys. If there is more information entering the sound source, the information is reproduced correctly, resulting in realism and depth. The reason for saying such a thing is that I once had such a conversation with an engineer of an audio brand. Because the author is very lazy (find an excuse first), so when MAZDA3 listens to music, the Bluetooth connection of the smartphone is the most basic. I wondered if the sound would be better if I didn't lazily connect with USB, so I tried to ask the engineer. "how different is it? "and. The engineer's answer is not a wired connection or a wireless connection, but how much information in the sound source is more important. If only low-information audio sources enter the smartphone because it is strongly compressed, it doesn't make much difference whether it's wired or wireless. You're right. Plug the USB memory provided by its audio brand as a demo source into the USB port in the console box and try to listen. Is this the voice with a lot of information? he has such an opinion. The sound has a completely different sense of proportion. Mazda has an audition room within the company that "can correctly reproduce the information in the sound source". Taking the sound reproduced there as a reference, Mazda developed MAZDA3's sound system. two。 With regard to the expansion of the dynamic range, the goal is to have less effect on noise in the full range of the audible band of people with a width of 20 Hz~20 kHz in all driving scenes. Therefore, it is necessary to achieve a loudspeaker and layout that reduces driving noise, can be reproduced in low distortion near the maximum audible threshold (a large area), and does not induce more abnormal sounds. Considering that the full-range loudspeaker can not achieve the above goal, MAZDA3 first decided to separate the low frequency from the medium and high frequency. The bass is not highly directional (it's hard to recognize the direction of sound), so speakers don't need to be right in front of you. When the subwoofer is placed in the passenger compartment, CAE analyzes whether it has high reproduction efficiency, and the results show that the reproduction efficiency increases when the subwoofer is placed in the corner of the passenger compartment. So we decided to put the large-caliber speakers traditionally placed on the door on the outside and embed them next to the neck of the car. In the case of the passenger seat, it is located at the foot under the glove box. Embed a subwoofer with a capacity of 31 in the front. Through calculation, it is known that if a subwoofer with a capacity of more than 10l is embedded, the subwoofer of more than 20 Hz can be reproduced, but it is stable to 31 because of its physical strictness. If it is 31, the lower limit of the frequency that can be regenerated is 60 Hz, but the development of a sound pressure level of 60 Hz 200 Hz that can fully regenerate the sense of low frequency can fully achieve the sense of bass. We make full use of the advantages of body installation over traditional door installation. At this value, the pure sound system, named Mazda Harmonic Acoustics (Mazda and Acoustics), plays an exciting bass. In the medium and high frequency range, a 2.5 cm twisting machine is installed at the root of the A column and an 8 cm screwdriver is arranged in front of the door handle. Install an 8cm wiper at the back door. The bass is all covered by the subwoofer next to the front cover. In a sixth-generation product group including previous-generation accelerators of the MAZDA3, speakers for medium-and high-frequency reproduction are arranged on the upper surface of the dashboard. In this arrangement, the reproduced sound of the loudspeaker is always reflected by the windshield, so the occupant directly hears the sound and reflects the sound interfering with the sound. Mazda Harmonic Acoustics's Twitter and Scowker try to eliminate the reflection of the glass, making direct sound the same configuration as the main body. Because the arrangement of the loudspeaker is symmetrical relative to the centerline of the vehicle, the ear of the passenger at the position offset from the centerline cannot be reached in an ideal state. Therefore, MAZDA3's sound system sets two sound space modes: "driver's seat" mode and "full seat" mode. By adjusting the time and phase through DSP (Digital Signal Processor: digital signal processor), the best sound can be heard in the driver's ear in the driver's seat mode. The full seat mode is the most appropriate setting for the halfway point between the ear position of the driver's seat and the passenger seat. Most of the authors take the MAZDA3 alone, so they usually choose the driver's seat mode to enjoy the "good sound". MAZDA3's sound system has a rich adjustment function is also its characteristics. In addition to general items such as the level and left-right balance of Bass (low frequency) and Treble (high frequency), equalizers are also available. Although each band can be carefully adjusted, but the author can not control (endless? ) therefore, selecting Jazz in Pop and Rock is optimized for each type of music and enjoyed. There is no doubt that more time is spent enjoying music than previous cars (although it is still connected to Bluetooth).

Shilianggengtai