Update README.md

README.md

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 ### Dataset Summary
 
-531 hours of noise data in in-car scene. It contains various vehicle models, road types, vehicle speed and car windoe close/open condition. Six recording points are placed to record the noise situation at different positions in the vehicle and accurately match the vehicle noise modeling requirements.
+This dataset is just a sample of 531 hours of noise dataset(paid dataset) in in-car scene. It contains various vehicle models, road types, vehicle speed and car windoe close/open condition. Six recording points are placed to record the noise situation at different positions in the vehicle and accurately match the vehicle noise modeling requirements.
                            
-For more details, please refer to the link: https://www.nexdata.ai/datasets/speechrecog/233?source=Huggingface
+For more details & to download the rest of the dataset(paid),please refer to the link: https://www.nexdata.ai/datasets/speechrecog/233?source=Huggingface
 
 ### Supported Tasks and Leaderboards