FRACTAL is an electric urban coupé revealing a prospective design for the PEUGEOT i Cockpit® that explores the sense of hearing in addition to sight and touch. It makes driving even more instinctive, creating an unparalleled on-board experience.
The StelLab* is a PSA Peugeot Citroën research unit that has designed an innovative ‘9.1.2’ sound system combining a high-quality set-up that features tactile bass systems built into the back of each seat to make driving all the more instinctive, enriching information through the use of acoustics. This additional PEUGEOT i-Cockpit® feature is characterised by the ‘spatialisation’ and ‘dynamisation’ of sound.
PEUGEOT FRACTAL has an interior and exterior identity developed for the first time in partnership with sound designer Amon Tobin. In the city, the car is in sync with its environment.
The head-up display features a high-definition holographic screen and a 45-degree polycarbonate strip that delivers additional information and creates an impression of depth. This allows the driver to customise the way information is shown.
FRACTAL is an ideas incubator that explores new design and manufacturing processes. 3D-printed parts represent more than 80% of the interior trim surface. The anechoic materials were made through generative design – an incremental, stochastic process used to achieve the perfect component.
The 30kW/h lithium-ion battery powers the electric motors on the front and rear axles to provide a total output of 150kW/204hp and combined-cycle autonomy of up to 450km.
Variable ground clearance allows the vehicle to adapt to different types of terrain. The 7cm clearance for motorway driving improves aerodynamics to range and boost battery life. This can be increased to 11cm in urban environments, allowing the car to take speed humps and car park entrances in its stride.
PEUGEOT i-Cockpit®: amplifying the senses
The PEUGEOT i-Cockpit® offers an unparalleled experience combining instinctive ergonomics with an unprecedented ambience. The choice of materials is inspired by auditoriums and recording studios: black oak decorates the instrument panel, door panels and bucket seats; copper trim reminiscent of audio connections runs through the interior, with 3D-printed anechoic motifs enhancing acoustic comfort. A 3D textile mesh covers the seats and is offset by white leather trim.
To ensure constant control, the driver’s seat provides kinaesthetic feedback based on the FRACTAL’s handling. The intuitive, compact steering wheel features a touchpad integrated into each of its two spokes. These thumb-controlled sensors control a range of FRACTAL’s functions and equipment.
The head-up display provides a holographic eye-level digital readout with a 45-degree polycarbonate strip delivering additional information. Drivers can customise the 12.3” HD digital display to suit individual preferences. The tilted polycarbonate strip gives added depth by showing information on a 7.7” AMOLED screen.
There are also toggle switches within easy reach on the arches on either side of the steering wheel. The right hand arch also houses the controls to activate the electric drive system. The 7.7” AMOLED touchscreen built into the centre console can be used to control all FRACTAL functions. Passengers in the rear also have a panel allowing them to adjust their immediate surroundings.
PEUGEOT FRACTAL is an ideas incubator that explores the use of 3D printing to create shapes that cannot be obtained through any other process. The resulting parts and components represent more than 80% of the interior surfaces and offer a combination of new styling and real functionality. The touchpad wires run through the spokes of the compact steering wheel.
The anechoic surfaces cover more than 15 square metres of the cabin interior and were produced by generative design. The computing power of today’s machines makes it possible to explore all variations of shapes and structures for a given part. Generative design recreates the natural evolutionary process through the use of algorithms to create efficient shapes and develop the perfect part in each case. PEUGEOT FRACTAL uses just the right amount of material to ensure acoustic efficiency.
This is the first time that a concept car design has incorporated sound to such an extent. PEUGEOT FRACTAL also innovates by bringing materials first seen on the ONYX to the B segment. 3D printing and the use of generative design ensure the highest standards in efficiency.
Matthias Hossann, Head of Concept Cars & Advanced Design at PEUGEOT
Innovative use of sound for an instinctive driving experience
This prospective PEUGEOT i-Cockpit® design gives hearing its rightful place alongside sight and touch, since people rely on all three of these senses to negotiate their immediate environment. FRACTAL features an innovative 9.1.2 sound system and acoustic design.
Drivers need to process an increasing amount of information within their vehicle, which demands more and more attention. The acoustic ergonomics enhance interaction with the PEUGEOT i-Cockpit® and makes it easier to keep eyes on the road. The spatialisation of sound sources allows the driver to absorb and understand information more effectively and easily.
Vincent Roussarie, New Acoustic Services specialist, PSA Peugeot Citroёn Research & Development Division
StelLab is a PSA PEUGEOT CITROËN research unit that has designed an innovative 9.1.2 sound system and related software to provide a completely immersive experience. This digital sound technology simulates the human ear. Sound sources are created virtually and their location projected to enhance the information conveyed to the driver.
When the navigation system is in use, the synthesised voice appears to come from some distance in front of the car. As the vehicle travels along, the source moves toward the cabin and shifts to the side to which the car needs to turn. At intersections, it is positioned in close proximity, inside the car, to alert the driver to an immediate change of direction.
Spatialisation ensures that the sound matches the morphology and path of the vehicle. The system developed by StelLab configures the different sound sources separately for the FRACTAL’s coupé and cabriolet modes.
To tap its full potential, the 9.1.2 installation features a 9.1 system comprising, in the front, three mid/high-range speakers, two tweeters, two woofers and a subwoofer, and, in the back, two mid-range speakers, two tweeters and a woofer. Leading French high-end audio specialist FOCAL also created the linen-fibre membrane for the speakers to render sound faithfully.
In addition, the PEUGEOT FRACTAL features a world premiere by incorporating a two-channel tactile bass system into the back of each seat. This revolutionary set-up is reflected in the name: 9.1.2.
Developed by SUBPAC, an American start-up, the tactile bass system offers a new sensory experience, which allows the bass to travel through a solid medium rather than through the air, meaning the sound waves reach the inner ear through the listener’s body. This gives the seat occupant a more intense and exclusive bass experience, without causing unwanted interference in the surrounding environment.
PEUGEOT FRACTAL also infuses the electric drive train with its own acoustic identity, a world away from any associations with internal combustion engines. PEUGEOT brought in Brazilian sound designer Amon Tobin to rise to this specific challenge. The PEUGEOT FRACTAL’s external sound signature keeps it in sync with other road users, such as pedestrians and cyclists, who are alerted to the car’s presence by different sounds specific to the vehicle’s status: acceleration, deceleration and cruising speed.
The interior conveys the PEUGEOT identity through an original audio design that gives ‘voice’ to functions such as the ignition, indicators, hazards, lights and various navigation features.
PEUGEOT FRACTAL is the fruit of collaboration between artists exploring new horizons. We worked with the designers to pool our resources of inspiration. The style is inspired by the sound, and my design draws on the PEUGEOT FRACTAL’s looks and materials.
Amon Tobin, musician and sound designer
The way in which spatialisation and the quality of this installation enhance the driving experience is evident in Amon Tobin’s acoustic set-up. PEUGEOT FRACTAL is unique, the result of the successful collaboration between the artist and the PEUGEOT Design team.
Source: Peugeot
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