[technology]
Active Noise Cancellation (ANC)
Noise reduction in the vehicle interior by destructive interference method
Immersive silence
Engine noise, road rumble and even ventilation sounds are neutralized before they ever reach the listener.
Vehicle cabins contain several distinct noise sources. Road and structure-borne noise changes with speed and surface conditions. Engine and powertrain harmonics shift with RPM. HVAC systems generate tonal and turbulent noise.
SPB Audio Lab develops real-time noise-control technologies for addressing these sources through the vehicle audio system.
SPB Audio Lab develops real-time noise-control technologies for addressing these sources through the vehicle audio system.
ANC
ON
Configured to the client’s preferences
The technology stack can be configured around the target noise source, available reference signals, speaker layout and processing resources.
The system is fully adaptive and operates autonomously throughout the vehicle’s entire service life, instantly responding to any change in acoustic conditions—be it engine RPM, road irregularities or fan speed. It comprises three independent modules:
Moreover, active noise cancellation can be seamlessly integrated with an active sound-design system, allowing you to enjoy both pure silence and a rich, custom audio experience on demand.
Moreover, active noise cancellation can be seamlessly integrated with an active sound-design system, allowing you to enjoy both pure silence and a rich, custom audio experience on demand.
The system works invisibly, transforming every journey into a private audio theater on wheels.
Ultimately, the driver controls the acoustic atmosphere: from a subtle sports-car growl to total silence or an immersive musical environment, free from low-frequency rumble.
This technology also effectively masks unwanted noises that arise from production-driven design choices—such as lightweight body construction, stiffer or cost-optimized suspension setups, and high-performance ventilation systems—delivering a tranquil, comfortable cabin without compromising on design or budget.
AENC — Active Engine Noise Cancellation
Dynamic multi-order cancellation of engine and powertrain harmonics under transient RPM conditions
ARNC — Active Road Noise Cancellation
Broadband control of road and structure-borne noise with virtual microphones and listener-aware quiet-zone positioning
HVAC ANC — HVAC Noise Cancellation
Tonal and turbulent HVAC noise reduction using microphone references and the available cabin audio path
Our technologies
services
Integration feasibility
We review the target noise source, available reference signals, speaker layout, audio path and processing constraints to define an appropriate system configuration.
Platform porting
Runtime algorithms are adapted to the target automotive DSP, processor and audio architecture. The integration scope is defined around available compute resources, channel configuration and platform requirements.
Proven in mass production vehicles
Our technology has been operating in mass-production vehicles for several years. Vehicle-specific calibration, tuning and validation support repeatable acoustic performance across production configurations and real-world operating conditions.