# An Emotion Recognition Approach based on Wavelet Transform and Second-Order Difference Plot of ECG

> Research article (DOAJ (DOAJ: Directory of Open Access Journals), 2017) · cited 12× · AI/ML

**Wikidata**: [openalex:W2593892313](https://www.wikidata.org/wiki/openalex:W2593892313)  
**Source**: https://4ort.xyz/entity/an-emotion-recognition-approach-based-on-wavelet-transform-and-second-order-difference-plot-of-ecg