Update README.md

README.md

@@ -66,9 +66,13 @@ pip install speechbrain
 
 Please notice that we encourage you to read our tutorials and learn more about [SpeechBrain](https://speechbrain.github.io).
 
-### Perform source separation on your own audio file
+### Minimal example for SI-SNR estimation
 
 ```python
+from speechbrain.pretrained import SepformerSeparation as separator
+from speechbrain.pretrained.interfaces import SNREstimator as snrest
+import torchaudio
+
 model = separator.from_hparams(source="speechbrain/sepformer-whamr", savedir='pretrained_models/sepformer-whamr2')
 est_sources = model.separate_file(path='speechbrain/sepformer-wsj02mix/test_mixture.wav')