Update README.md

README.md

@@ -8,10 +8,10 @@ tags:
 - Noise Collection
 - background noise
 ---
-## Speech-Free Background Noise Dataset — Real-World, Non-Synthetic (360 Hours)
+## Speech-Free Background Noise Dataset — Real-World, Non-Synthetic (50+ Hours)
 
 # Dataset summary
-360 hours of real-world urban environmental/ambient background noise (field recordings) without intelligible speech (speech-free), from three scenes: airport, street, subway. The dataset is non-synthetic and intended for speech enhancement via noise augmentation and sound event detection (SED) as “clean background”/negative class
+50+ hours of real-world urban environmental/ambient background noise (field recordings) without intelligible speech (speech-free), from three scenes: airport, street, subway. The dataset is non-synthetic and intended for speech enhancement via noise augmentation and sound event detection (SED) as “clean background”/negative class
 
 # Purpose and usage scenarios
 - Speech enhancement: adding ambient/background noise to clean speech