Audio

A car cabin is one of the most challenging environments in which to achieve optimal acoustics due to a combination of road noise, engine noise, speaker arrangement, hard interior surfaces, absorbent materials – the list goes on. Since 1977, Mitsubishi Electric has been dedicated to creating the perfect in-cabin acoustical environment with an innate sensitivity to the need for non-branded premium solutions. Today, we continue to deliver audio systems with top-rated quality and performance, custom-designed for your interiors, without the luxury nameplate pricing.

algorithm

Patented algorithms

At the heart of a really transformative audio experience are the algorithms used to shape, tune, and improve the audio data flowing through the system. Our audio labs are continually turning our best research into intelligent algorithms suitable for DSPs and CPUs so that you can squeeze every drop out of your audio system’s performance. Our patent portfolio proves it.

Most active noise cancellation solutions only attempt to eliminate engine noise since exterior sounds are much more difficult to remove due to their variety and inconsistency. Our solution uses a sophisticated algorithm driven by microphones and accelerometers to detect, predict, and eliminate noise whether it’s from an engine, the road, vibrations, or anything else outside the car. Our solution is extremely effective in creating a pristine acoustic environment.

  • Adaptive to changing vehicle conditions (aging shocks and wearing tires) and environment (temperature and humidity)
  • Ability to eliminate frequencies at twice the range of other solutions (30-300 Hz)
  • Stable performance under all conditions
  • Ability to automatically adjust to quantity and placement of microphones and accelerometers
  • Support for in-cabin tuning to further reduce noise and enhance sound

In nearly every car design, speakers are all at different distances from each listener, making it extremely challenging to create an acoustic sweet spot for everyone in the car. As a result, audio frequencies are heard at disjointed times and perceived as muddy, unnatural, or canned sounding. While some solutions try to address this with a separate amplifier for the tweeter, these don’t separate mids from lows – and more importantly perhaps, they add wiring-harness complexity and significant cost. Our solution adds the multi-way time alignment algorithm to existing audio designs with a single amplifier to create proper alignment for all speakers, resulting in superior sound quality at no additional hardware cost.

  • Separated audio – low/medium/high frequency ranges
  • Added delays so listeners perceive all speakers at same distance
  • Recombination of time-shifted audio, played through amp and speakers
  • Passive frequency separation at speaker: woofers play lows, tweeters play highs
  • Support for alignment correction per cone in a multi-speaker assembly

Selecting the right frequency cutoff for tweeters is a performance tradeoff – too low and you risk overdriving the tweeter and causing distortion; too high and you needlessly exclude noticeable parts of the audio spectrum resulting in a hollow sound. Our PremiDIA VBL technology was created through extensive research of small speaker characteristics and dynamically adjusts the frequency cut-off based on the audio signal to maximize output without maxing out the speaker.

    Compared to uncompressed digital audio, file formats like MP3 and AAC are remarkably smaller in size and as a result have become the basis of most people’s music collections. However, the same compression that provides convenient portability comes at the expense of high fidelity and many subtle sounds are lost from original recordings. Through careful analysis of compression algorithms over thousands of hours of digital research, we’ve created an algorithm that’s able to detect and reconstruct some of the lost audio, resulting in a richer, more authentic, musical experience.

      With at least four and often 16 or more speakers, cars should be able to recreate an amazing lifelike audio experience but often fall short. Our Pure Extend Wide Surround technology uses 3D DSP algorithms to create an enormous soundstage that fully envelops the listener. Occupants can choose from a number of settings (concert hall, cathedral, opera house, and so on) – all with impactful and immersive sound.

        Getting the audio volume right in a car is a process of constant adjustment with songs, news, advertising, and playlists all at different loudness levels. Our DIATONE Volume solution dynamically adjusts volume levels from all audio sources (such as FM, MP3, or CDs) in real time providing a consistent listening experience. This is important not only for reducing the volume of advertising or raising the volume on quiet songs, it’s critical to maintaining consistent playlist volume in light of music production becoming progressively louder over the decades.

           

          High-fidelity speakers

          Speakers are where your audio system’s rubber hits the road and it doesn’t matter how well conditioned your signal is – if it’s driving a paper cone full of quacks and rattles, it won’t sound good. For over 60 years, Mitsubishi Electric has had an entire division dedicated to speaker technology, using advanced material sciences to produce speakers that reproduce sound with crystal-clear fidelity.

            Ideal speakers are made from material that weighs very little, has low sound loss, is highly responsive, and is suitable for all frequencies. Other considerations include cost, consistency in manufacturing, and environmental sensitivity. Our premium B4C speakers are grown from a single boron crystal in a patented process to meet all of these criteria. This results in nearly ideal acoustic properties – a responsiveness that is comparable to diamond speakers but with less sound loss and a more reasonable price point – available as tweeters, woofers, and mid-range speakers.

              Premium speakers without the premium price tag are invaluable for differentiating trim levels. Our NCV speakers are made from a composite blend of polymers and carbon nanotubes resulting in excellent acoustic properties. Their responsiveness comes close to metal speakers and their internal sound loss is comparable to paper, generating high-quality sound for all sized speakers, including subwoofers.

                Hi-Fi Speakers
                 
                hardware

                Hardware

                Amplifiers, DACs, and DSPs are so fundamental to any audio design that subtle imperfections can adversely impact your sound output. Our engineers know these components can be inadvertently overlooked when seeking acoustic perfection. For instance, irregular conversion jitter or slow conversion rates can result in unnatural sounds, faint echoes, or acoustic “brittleness” – and an overall sense of inferior quality. With decades of experience in making precision audio hardware, Mitsubishi Electric knows how to complete the backbone of your audio chain with quality and care.