Two-Stage Method for Specific Audio Retrieval

Specific audio retrieval, also referred as similarity-based audio retrieval, means to detect and locate a given query audio segment in a long stored audio signal. In this paper, we proposed a two-stage method for specific audio retrieval. In the first stage, the histogram pruning algorithm is used for coarse detection. In the second stage, the partial distance technique is used for fine verification and localization. Experimental results show that the two-stage coarse-to-fine method offers fast search speed and improves the robustness to additive noise and compression encoding.