Update README.md

README.md

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 license: apache-2.0
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-A SoundStream decoder to reconstruct audio from a mel-spectrogram.
+A [SoundStream](https://arxiv.org/abs/2107.03312) decoder to reconstruct audio from a mel-spectrogram.
 
 ## Overview
 
-This model is a SoundStream decoder which inverts mel-spectrograms computed with the specific hyperparameters defined in the example below. This model was trained on music data and used in Multi-instrument Music Synthesis with Spectrogram Diffusion (ISMIR 2022).
+This model is a SoundStream decoder which inverts mel-spectrograms computed with the specific hyperparameters defined in the example below. This model was trained on music data and used in [Multi-instrument Music Synthesis with Spectrogram Diffusion](https://arxiv.org/abs/2206.05408) (ISMIR 2022).
 
 A typical use-case is to simplify music generation by predicting mel-spectrograms (instead of a raw waveform), and then use this model to reconstruct audio.