DEVELOPMENT OF REMOVAL SYSTEM OF INTERFERENCE SIGNALS USING ADAPTIVE MICROPHONE ARRAY

摘要

Development of a system for removing an interference signal using an adaptive microphone array is provided to improve a signal to interference ratio and a sound quality of an objective sound by restricting an incident sound of different direction except the objective signal among sounds inputted to a microphone array. Development of a system for removing an interference signal using an adaptive microphone array includes the steps of: converting a signal inputted through a microphone array having a small aperture into a digital signal; converting the digital signal into a frequency domain; estimating an incident angle of an objective signal through a blocking matrix; and arraying the incident angle of the objective signal to a vertical direction of the array by converting a phase of the microphone array as much as the incident angle of the objective signal.