ACTIVE NOISE CANCELLATION METHOD FOR ENCLOSED CABINS

摘要

A Noise Cancellation Process for enclosed cabins is disclosed. According to one embodiment, an input audio source corresponding to sound received from multiple microphones situated equidistantly in both directions in a two dimensional plane, is converted to a digital signal via an analog to digital (A/D) convertor. The A/D converted audio is analyzed for content to identify ambient noise. The frequency, amplitude and phase of the identified ambient noise is subsequently determined. A Noise correction sound wave is generated with negative phase of that corresponding to the identified ambient noise. The noise correction sound wave is added to the identified noise to create a noise corrected sound.

主权项

1. A Noise Cancellation Process for an enclosed cabin environment comprising:
Providing an input audio source from an enclosed cabin; Converting the input audio source to a digital signal via an analog to digital (A/D) convertor; Analyzing the A/D converted audio for content and identifying ambient noise; Determining frequency, amplitude and phase of the identified ambient noise; Generating a noise correction sound wave with negative phase of that corresponding to the identified ambient noise; Summing the noise correction sound wave and the identified noise sound wave to create a noise corrected audio sound wave; Outputting the noise corrected audio sound with diminished noise.