Analysis and Identification of Cetacean Sounds Based on Time-Frequency Analysis

A set of sonar system depending on acoustic signal for communication, orientation estimate, and environment identification has been formed by cetacean in the long-term evolving process. Compared with human development of such system, bio-sonar system is characterized by stronger anti-jamming ability, higher precision, better capability of identification, etc. It has great significance to study, analyze and classify cetacean sounds, not only for the protection of halobios but also for the mystery of cetacean and the development of the bio-sonar. This paper expounds some general methods for monitoring cetacean, analyzing and summarizing the characteristics of cetacean acoustic signals based on time-frequency analysis, which lays the foundation for the recognition of cetacean acoustic signals. Finally, this paper introduces two category methods which often used during the process of cetacean acoustic signal recognition. (C) 2011 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of Harbin University of Science and Technology