Sound segmentation equipment, sound segmentation method and sound detecting system

Abstract

The invention provides sound segmentation equipment, a sound segmentation method and a sound detecting system. The sound segmentation method includes a non-silence detecting step, a feature extraction step, a first detecting step, a second detecting step and a first processing window adjusting step. In the non-silence detecting step, a non-silence sound segment is detected in a sound sequence. In the feature extraction step, a feature sequence is extracted from the non-silence sound segment. In the first detecting step, if a point set in a processing window of the feature sequence meets specified conditions, the processing window is confirmed to a candidate region. In the second detecting step, division points are detected in the candidate region. In the first processing window adjusting step, if the point set in the processing window in the first detecting step does not meet the specific conditions or the division points are not detected in the second detecting step, the processing window is adjusted, and the first detecting step and the second detecting step are executed on the processing window adjusted in the first processing window adjusting step. Due to the sound segmentation equipment, the sound segmentation method and the sound detecting system, better performance can be obtained while a large calculated quantity is needless.

Description

technical field [0001] The invention relates to a sound segmentation device, a sound segmentation method, and a sound detection system. Background technique [0002] Sound detection methods generally involve a sound segmentation process as a first step and a sound classification process as a second step. [0003] In sound segmentation processing, an input sound sequence (audio sequence) is segmented into a plurality of sound segments, each of which is considered to have the same attribute. Then, in the sound classification process, these sound segments are input to the sound classifier, and the sound categories of the sound segments are output. [0004] Sound segmentation processing often plays an important role in sound detection methods, because the performance of sound segmentation processing directly affects the results of sound classification processing, and thus directly affects the performance of sound detection methods. [0005] Sound segmentation methods called "m...

AI Technical Summary

Problems solved by technology

In methods based on distance metrics as described above, it is often difficult to determine segmentation points from candidate segmentation points, because these methods require appropriate thresholds, which often need to be adjusted for different training data and cannot be adjusted for different training data. Stability and robustness guaranteed for all kinds of sound data

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