Robust audio retrieval method based on anti-noise fingerprinting and segmental matching

摘要

For classical Philips audio retrieval, the short duration and the long silent period in inserted template audio make a major challenge to the robustness in actual environments. In this study, a novel audio retrieval method is proposed to handle the challenge by modifying both the fingerprinting stage and the matching stage. While extracting audio fingerprints, the silent segments are firstly detected. Then, a specific fingerprint is arranged to the silent segments for distinguishment. In the matching stage, a window-by-window search is performed to figure out the inserted audio templates. Moreover, the searching window is divided into several segments for precise comparison between the template audio and the test audio. A testing dataset is made by randomly arranging the duration of the inserted template audio to be from 3 to 5 s. Experiment results show that mean average precision and recall are significantly improved by the proposed method.