Abstract:This paper proposes a two-step fixed audio retrieval algorithm based on zero crossing rate and audio fingerprinting. The iterative calculation of the histogram and the sliding step of the observation time window are used in preliminary retrieval based on the zero crossing rate histogram to reduce the amount of calculation and speed up the search, fast filtering out candidate audio segments with high similarity; Then based on the dimension reduction Philips audio fingerprint, accurate retrieval of the candidate audio is carried out, further improving the retrieval accuracy. The experimental results show that the audio retrieval algorithm can improve the retrieval speed greatly and has good robustness, ensuring good retrieval accuracy.