Inside the Smart Cockpit: Why Great Car Sound Still Comes Down to the Hardware

1.Introduction
2.Fighting the Cabin's Natural Acoustic Problems
3.Building the Right Speaker Layout for a Moving, Asymmetric Cabin
4.From Lab Testing to Real World Tuning
5.Blocking Out Noise and Building a Quiet Foundation
6.BESTAR: A Partner You Can Actually Rely On

Introduction
In the present day, cars are becoming more than just a means of transport from place A to B. After home and office, people now call their third room. You can work in there. They have caller lines there. Inside there is a speaker for playing songs. Automakers are investing heavily to use that body to create a true acoustic room, not merely a loud metal box with seats in it, as connected and electric vehicles inside the car.
However, there is the issue. Car cabins are not great environments for making pure acoustics. It is cramped which has unusual angles, and has a lot of curved surfaces made of glass and leather, which reflect sound in an unusual manner. Any amplifier and tuning software will do little good if they can't reach the correct and clean sounds coming from the physical components inside the car.
This is where BESTAR comes in. The company has been developing expertise for years that are specific to automotive acoustics. As a leading provider of electroacoustic components and in-vehicle audio systems, BESTAR delivers what automakers and audio system integrators demand: authentic, engineering-based sound design.

Fighting the Cabin's Natural Acoustic Problems
There are several reasons that make up a car interior resist good sound. The space is narrow, so the sound waves made at low frequencies reflect from each other inside the space, resulting in standing waves. They create standing waves which make some bass notes boom while others don't in various seats. Glass and leather surfaces absorb and reflect sound instead of absorbing. It's not just glass and leather absorbing but reflecting too, and this adds unwanted colors to the sound and makes it sound less natural.
BESTAR takes care of this at the source through custom acoustic modules. They are the use of bass and midrange enclosures in true form, matching the actual vehicle model. They are set up so the acoustic boundaries are decided from the beginning to eliminate standing wave issues that would need correcting using software. This prevents much of the distortion from ever reaching speaker.
BESTAR also provides the miniaturized electroacoustic parts specifically designed for low power and in narrow space, such as in the dashboard or in the A pillar region. They are very small parts and are designed to maintain optimal sound quality in situations where no one ever thought they would fit a speaker in a location.

Building the Right Speaker Layout for a Moving, Asymmetric Cabin
The layout issue with car audio systems is what doesn't exist in a home audio system. The driver and passengers sit off-center, rather than centered like in a living room where drivers would sit facing the speakers directly. In addition, contemporary systems seek out the immersive surround-sound options, demanding very precise positioning of high, mid and low frequency sources in order to achieve a sound staging that recreates the room's acoustical environment.
To overcome this, BESTAR provides a complete range of components designed for just such applications.
Advanced diaphragms and magnetic circuit designs help ensure high performance tweeters produce crisp, reaching high frequencies. That's what lends a feeling of openness and direction to the front seats, it's coming from a certain spot, not "somewhere up front".
Midrange speakers have been set to sound sensitive in the more healthy voice range. It's something of a priority for a vehicle, since you don't want to hear swallowed-up navigation voices or feel like you're missing out on things as you listen to music.
Surrounded by the constraints of a car door or trunk, woofers and subwoofers have to compete for bass by making tremendous use of magnetic circuits. Magnet and motor design are crucial in gaining a strong low end out of an enclosure, and it is one of the harder problems in car audio.

From Lab Testing to Real World Tuning
In lab conditions, a speaker can sound exactly the way that it is designed to sound, but when it is installed in an actual car, some frequencies will be absorbed by the interior trim and others will be reflected. Once the speaker is in a moving vehicle, frequency response and distortion numbers tend to get worse. This extends the tuning process, causing manufacturers to be limited in ability to achieve the audio impact they had originally intended.
BESTAR can provide aid on the Acoustic Simulation of the tested object since the early design stage when no hardware has yet been manufactured, up to testing in anechoic chambers of real vehicles. This end-to-end solution allows problems to be identified and corrected at an early stage.

Blocking Out Noise and Building a Quiet Foundation
The audio system is constantly under attack from road noise, wind noise, vibration from the body or chassis, etc. They will eat into the dynamic range of the music and cause everything to sound less crisp and clear at lower levels of playback where they will be most noticeable.
BESTAR has expertise on piezoelectric ceramics technology, can deliver a strength that enables the creation of ultra thin piezoelectric actuators. These can be used in next generation active noise cancellation systems or in seat based haptic feedback systems. This takes noise control beyond passive measures such as simply adding greater insulation, and into a more forward-thinking, proactive space that can adapt itself through the use of mechanisms that respond and change in real time.

BESTAR: A Partner You Can Actually Rely On
What makes BESTAR the difference comes not only from the variety of components, but also from others. This boils down to production discipline. All parts coming out of the line are closely monitored for consistency, durability, and extended performance over time, it's important when they need to perform for the life of a vehicle.
BESTAR can provide any parts but not limited. The company can also design a comprehensive, customisable in vehicle audio system for a specific platform or vehicle program. BESTAR provides automakers, audio integrators and anybody else in this field with a relationship that transcends a catalogue of parts and goes right straight down to actual engineering.