Panda sound event detection method and system under mixed audio

Abstract

The invention discloses a panda sound event detection method and system under mixed audio. The panda sound event detection method comprises the following steps: acquiring audio data of a detected environment; extracting a logarithmic Mel spectrum from the audio data, and standardizing the logarithmic Mel spectrum; dividing the processed audio data into development set data and test set data; building a multi-scale attention convolutional recurrent neural network; training the multi-scale attention convolutional recurrent neural network through the development set data; and predicting the test set data through the trained multi-scale attention convolutional recurrent neural network, and generating a prediction result; According to the method, the multi-scale attention convolution module is utilized to extract the multi-scale feature information, and the recurrent neural network is utilized to fully utilize the context information, so that the method has relatively high detection precision for the giant panda sound, and has a very good detection effect for the giant panda sound with different cry types and cry durations.

Description

technical field [0001] The invention relates to the technical fields of audio detection technology, sound collection, recognition and detection, and in particular to a method and system for detecting giant panda sound events under mixed audio. Background technique [0002] Giant panda, English name Giant Panda, scientific name Ailuropoda melanoleuca, commonly known as "panda" or "cat bear", is a mammal belonging to the family Ursidae of the order Carnivora, with black and white body colors. Pandas are endemic to China, and their main existing habitats are the mountainous areas around the Sichuan Basin in central and western China and the Qinling Mountains in southern Shaanxi. There are about 2,060 wild giant pandas in the world (2016 data). Due to the low fertility rate, the giant panda is rated as an endangered species in the China Red Data Book of Endangered Animals and is a national treasure of China. The ancestors of giant pandas first appeared 2-3 million years ago an...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects in the prior art, the present invention provides a giant panda sound event detection method and system under mixed audio, which solves the problem that due to the changeable types of giant panda calls, the large difference in acoustic characteristics, and the different lengths of calls The problems caused, and improve the recognition and detection efficiency of giant panda calls

Images