Especially, focused on the recognition of heart sound recorded after high intensity exercise workload.

尤其是讨论了对剧烈运动负荷后记录的心音进行的识别。

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This paper discusses the recognition of heart sound for evaluating the cardiac contractility change trend, which includes heart sound samples recorded at different exercise condition.

讨论了用于评估心力变化趋势的心音识别算法，包含了对不同运动条件下记录的心音样本的识别。

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The results show that this method can characterize various heart sounds in time-frequency domain, and establishes the basis for the classification and recognition of heart sound.

结果表明，该分析方法能够很好地表征心音的时频变化特性，为后续实现心音的分类与识别提供了参考。

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