Pop-Click Noise Detection Using Inter-Frame Correlation for Improved Portable Auditory Sensing

In this paper, a pop-click noise detection method is proposed to improve the quality of audio signals recorded using portable microphones. In order to reduce false alarm and missing detection errors, the proposed method utilizes the second-order difference of an uncorrelated residual signal, followed by adaptive median thresholding. It is shown from performance evaluation that the proposed method achieves higher detection accuracy, under various signal-tonoise ratio conditions, than with a conventional method using the first-order difference of the residual signal.