Implementation of Feedforward Active Noise Control Techniques for Headphones

This paper develops active noise control (ANC) system with headphones to reduce recording environmental noise, such as from bus, train and airplane. By applying an additional MEMS microphone to get reference signal at each side of headphones, the proposed ANC headphones apply TMS320C6713 as the computing core to generate the anti-noise signal to destructively interfere the undesired noise. The antinoise signal, which can be integrated with the audio signal, drives the speaker of the commercial headphones to reduce the environmental noise. Experimental results show the presented ANC headphones achieves larger bandwidth of noise reduction than the commercially available headphones.