Update README.md

README.md

@@ -9,9 +9,10 @@ This is an audio classification dataset for **Environmental Sound Classification
 **Classes = 50    ,    Split = Train-Test**
 
 ## Structure
-
 - `audios` folder contains audio files.
-- `train.csv` for training split and `test.csv` for the testing split.
+- `csv_files` folder contains CSV files for **five-fold** cross-validation.
+- To perform cross-validation on fold 1, `train_1.csv` will be used for the training split and `test_1.csv` for the testing split, with the same pattern followed for the other folds.
+- To perform training and testing **witout cross-validation**, use `csv_files/train.csv` and `csv_files/test.csv` files respectively.
 
 ## Download
 ```python