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Active Noise Control System
Active noise control system, also known as ANC (Active Noise Control). Its basic principle is that the noise reduction system produces a reverse sound wave equal to the external noise and neutralizes the noise.  The reference microphone obtains the reference signal of the noise, generates the control signal after being processed by the data acquisition and the computer (adaptive filtering), and outputs it to the secondary sound source to drive the loudspeaker to produce offset sound  to minimize the noise signal at the error microphone.
The Technology Principle
Active Noise Reduction Controller
Active Noise Control System Schematic Diagram
Application Scenarios
Application 1: Noise Reduction In High-speed Railway Area
Application 2: VIP Seat Active Noise Reduction
The active noise control technology can reduce the noise in the  environment of the high-speed railway carriage, and can enhance the comfort of the environment.
Active Noise Reduction Seat Composition
1. Base, backrest and headrest. 2. Reference Noise Microphone: Set on the backrest and headrest within the moving range of the passenger's head to collect the main noise. 3. Error Microphone: set on the backrest and headrest within the moving range of the passenger's head to collect the residual noise after noise control in the high-speed railway business class.
Software Test Interface
Software Testing Site
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