Update README.md

README.md

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 - [GitHub](https://github.com/Jinbo-Hu/PSELDNets)
 
 1. This repo contains 67,000 1-minute clips amounting to approximately 1,117 hours for training, and 3,060 1-minute clips amounting to roughly 51 hours for testing. 
-2. These datasets features an ontology of 170 sound classes and are generated by convolving sound event clips from FSD50K with simulated SRIRs (for training) or collected SRIRs from TAU-SRIR DB (for testing).
+2. These datasets features an ontology of 170 sound classes and are generated by convolving sound event clips from [FSD50K](https://zenodo.org/records/4060432) with simulated SRIRs (for training) or collected SRIRs from [TAU-SRIR DB](https://zenodo.org/records/6408611) (for testing).
 3. The datasets are generated by this [tools](https://github.com/Jinbo-Hu/SELD-Data-Generator).