Update README.md

add details about mturk examples

README.md

@@ -2,12 +2,14 @@
 
 SC09 is a raw audio waveform dataset used in the paper "It's Raw! Audio Generation with State-Space Models". It was previously used as a challenging problem for unconditional audio generation by Donahue et al. (2019), and was originally introduced as a dataset for keyword spotting by Warden (2018). The SC09 dataset consists of 1s clips of utterances of the digits zero through nine across a variety of speakers, with diverse accents and noise conditions.
 
-We include a single `sc09.zip` file that contains:
+We include an `sc09.zip` file that contains:
 - folders `zero` through `nine`, each containing audio files sampled at 16kHz corresponding to utterances for the digit
 - `validation_list.txt` containing the list of validation utterances
 - `testing_list.txt` containing the list of testing utterances
 - the original `LICENSE` file
 
+We also include a `sc09_quantized.zip` file, which contains examples that were used in our MTurk study (details of which can be found in the SaShiMi paper). In particular, we take 50 random examples from each digit class and run each through a round of mu-law quantization followed by dequantization. This mimics the quantization noise that is experienced by samples generated by autoregressive models that are trained with mu-law quantization.
+
 We split the data into train-val-test for training SaShiMi models and baselines by following the splits provided in `validation_list.txt` and `testing_list.txt`.
 
 You can use the following BibTeX entries to appropriately cite prior work related to this dataset if you decide to use this in your research: