Update README.md

README.md

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 The NeMo Mel Codec is a neural audio codec which compresses mel-spectrograms into a quantized representation and reconstructs audio. The model can be used as a vocoder for speech synthesis.
 
-The model works with full-bandwidth 44.1kHz speech. It might have lower performance with low-bandwidth speech (e.g. 16kHz speech upsampled to 44.1) or with non-speech audio.
+The model works with full-bandwidth 44.1kHz speech. It might have lower performance with low-bandwidth speech (e.g. 16kHz speech upsampled to 44.1kHz) or with non-speech audio.
 
 | Sample Rate | Frame Rate | Bit Rate   | # Codebooks | Codebook Size | Embed Dim   | FSQ Levels   |
 |:-----------:|:----------:|:----------:|:-----------:|:-------------:|:-----------:|:------------:|