Random start index in WeightDataset

[v-nhandt21]

At this line:

FastVocoder/data/dataset.py

Line 97 in a9af370

start_index = random.randint(0, len_data - hparams.fixed_length - 1)

If the input mel size smaller than fix-length, the random raise issue, I have try except to pass these short audios, but I just wonder it is handle in collate.

More than that, the segment size as I found in hifigan is 32, but in basic-melgan it (fix-length) is set to 140. Are there any difference between the 140 for biaobei and the one for LJspeech