diff --git a/enhancer/cli/train_config/dataset/DNS-2020.yaml b/enhancer/cli/train_config/dataset/DNS-2020.yaml
index 6216103..ee5dfb1 100644
--- a/enhancer/cli/train_config/dataset/DNS-2020.yaml
+++ b/enhancer/cli/train_config/dataset/DNS-2020.yaml
@@ -1,8 +1,8 @@
 _target_: enhancer.data.dataset.EnhancerDataset
 root_dir : /scratch/c.sistc3/MS-SNSD/DNS20
 name : dns-2020
-duration : 3
-stride : 2
+duration : 1.5
+stride : 1
 sampling_rate: 16000
 batch_size: 32
 min_valid_minutes: 25.0