problems of noisy loud audios?

[attitudechunfeng]

Hi, @r9y9, I followed the document tutorial of synthesis audios. I have tried both your DNN based and RNN based models, step by step following the python tutorial. However, when the model trained, in the test stage, i got a noisy loud audio. Can you give me some advices about this problem. In fact, i make some little changes, i split the train and test phase into different files, and both model file and parameters are saved in local. In the test stage, I just load those files from disk and go through the following test steps. Also, I don't use the test files in your tutorial, but randomly select a lab file from 'data/slt_arctic_full_data/label_state_align/' instead. Is there anything wrong with me?

[r9y9]

No, everything you did seems ok to me. Could you upload code to https://gist.github.com/ or whatever so that I can reproduce?

[attitudechunfeng]

This is the gist link, https://gist.github.com/attitudechunfeng/58a052f18f6aa24235000cc50618e887. There're 2 files, nn.py is the training phase of the DNN based model and nn_synth.py is the test phase.

[r9y9]

Thank you. I can reproduce and here is the fix:

https://gist.github.com/attitudechunfeng/58a052f18f6aa24235000cc50618e887#file-nn_synth-py-L181

replace

wavfile.write('1.wav', rate=fs, data=waveform)

with

wavfile.write('1.wav', rate=fs, data=waveform.astype(np.int16))

By the way, I noticed you save models as torch.save(model, "model.pkl"), but I think the recommended way to save model in pytorch is to use torch.save(model.state_dict(), "model.pth"). See https://discuss.pytorch.org/t/how-to-save-load-torch-models/718 for details.

[attitudechunfeng]

It works! I will adopt your advice about saving model, finally, many thanks!

[r9y9]

You are welcome. Feel free to open new issues if you have any other problems.

[attitudechunfeng]

Another question, if i want to synthesis arbitrary text, how do i generate the lab file. I compared the hts full-context lab file and the one in the example. They're almost the same except each line in the example has an '[2-6]' at the end position. How could i unify them?

[r9y9]

Generating full-context labels (which requires language-dependent text processor) is out of scope of the library. For this purpose, you can follow Merlin's guide to generate labels. https://github.com/CSTR-Edinburgh/merlin/tree/master/egs/build_your_own_voice/s1#prepare-labels.

See also CSTR-Edinburgh/merlin#28.

[attitudechunfeng]

I have met another question when i tried to adapt the rnn and dnn model to my own dataset. First, i generate full-text labs using the hts-engine front end tools, then normalize them to phone and state alignment files, and finally using the prepare_feature script to extract features. But during the phase of training acoustic model, errors occured. With dnn part, it warns as follows:
Traceback (most recent call last): File "nn.py", line 247, in <module> X_min[ty], X_max[ty], Y_mean[ty], Y_scale[ty], utt_lengths[ty]) File "nn.py", line 214, in train for x, y in dataset_loaders[phase]: File "/disk2/wangcf/TTS/siri/virsiri/lib/python3.6/site-packages/torch/utils/data/dataloader.py", line 201, in __next__ return self._process_next_batch(batch) File "/disk2/wangcf/TTS/siri/virsiri/lib/python3.6/site-packages/torch/utils/data/dataloader.py", line 221, in _process_next_batch raise batch.exc_type(batch.exc_msg) IndexError: Traceback (most recent call last): File "/disk2/wangcf/TTS/siri/virsiri/lib/python3.6/site-packages/torch/utils/data/dataloader.py", line 40, in _worker_loop samples = collate_fn([dataset[i] for i in batch_indices]) File "/disk2/wangcf/TTS/siri/virsiri/lib/python3.6/site-packages/torch/utils/data/dataloader.py", line 40, in <listcomp> samples = collate_fn([dataset[i] for i in batch_indices]) File "nn.py", line 127, in __getitem__ x, y = self.X[idx], self.Y[idx] File "/disk2/wangcf/TTS/nnmnkwii/nnmnkwii/datasets/__init__.py", line 371, in __getitem__ return self._getitem_one_sample(frame_idx) File "/disk2/wangcf/TTS/nnmnkwii/nnmnkwii/datasets/__init__.py", line 362, in _getitem_one_sample return frames[frame_idx_in_focused_utterance] IndexError: index 944 is out of bounds for axis 0 with size 880

and for the rnn part, it warns a padding size problem, but the code have implied to pad to the max utt length.
Traceback (most recent call last): File "rnn.py", line 118, in <module> Y_mean[typ], Y_var[typ] = meanvar(Y[typ]["train"], utt_lengths[typ]["train"]) File "/disk2/wangcf/TTS/nnmnkwii/nnmnkwii/preprocessing/generic.py", line 328, in meanvar for idx, x in enumerate(dataset): File "/disk2/wangcf/TTS/nnmnkwii/nnmnkwii/datasets/__init__.py", line 245, in __getitem__ return self._getitem_one_sample(idx) File "/disk2/wangcf/TTS/nnmnkwii/nnmnkwii/datasets/__init__.py", line 234, in _getitem_one_sample len(x), self.padded_length)) RuntimeError: Num frames 1576 exceeded: 1546. Try larger value for padded_length.

any ideas about that?

[r9y9]

IndexError: index 944 is out of bounds for axis 0 with size 880

Did you make sure that you did valid indexing?

RuntimeError: Num frames 1576 exceeded: 1546. Try larger value for padded_length.

Did you try to set large padded_length, e.g. 2000?

[attitudechunfeng]

i've figured this problem by increasing the padded_length. However, the audio trained on my own data performs poor quality. I didn't change the training parameters. Any advices to improve the quality? ps: my dataset is 16khz

[r9y9]

Hard to say much without seeing code and data, but I guess:

• You have small amount data
• Alignments are failing
• Linguistic features you use are not suited for your data. If you are using https://github.com/CSTR-Edinburgh/merlin/blob/master/misc/questions/questions-radio_dnn_416.hed for linguistic feature extraction, it may not work well for non-radio sentences.

Also, training parameters should be turned for you data.