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README.md

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 ---
-license: apache-2.0
+language: "en"
+tags:
+- text-to-speech
+- TTS
+- speech-synthesis
+- fastspeech2
+- speechbrain
+license: "apache-2.0"
+datasets:
+- LJSpeech
+metrics:
+- mos
 ---
+
+<iframe src="https://ghbtns.com/github-btn.html?user=speechbrain&repo=speechbrain&type=star&count=true&size=large&v=2" frameborder="0" scrolling="0" width="170" height="30" title="GitHub"></iframe>
+<br/><br/>
+
+# Text-to-Speech (TTS) with FastSpeech2-Internal-Alignment trained on LJSpeech
+
+This repository provides all the necessary tools for Text-to-Speech (TTS)  with SpeechBrain using a [FastSpeech2](https://arxiv.org/abs/2006.04558) with internal alignment pretrained on [LJSpeech](https://keithito.com/LJ-Speech-Dataset/).
+
+The pre-trained model takes texts or phonemes as input and produces a spectrogram in output. One can get the final waveform by applying a vocoder (e.g., HiFIGAN) on top of the generated spectrogram. It should be noted that if the input is text, we use a state-of-the-art grapheme-to-phoneme module to convert it to phonemes and then pass the phonemes to fastspeech2-internal-alignment model.
+
+
+## Install SpeechBrain
+
+```bash
+git clone https://github.com/speechbrain/speechbrain.git
+cd speechbrain
+pip install -r requirements.txt
+pip install --editable .           
+```
+
+Please notice that we encourage you to read our tutorials and learn more about
+[SpeechBrain](https://speechbrain.github.io).
+
+### Perform Text-to-Speech (TTS) with FastSpeech2-Internal-Alignment
+
+```python
+import torchaudio
+from speechbrain.pretrained import FastSpeech2InternalAlignment
+from speechbrain.pretrained import HIFIGAN
+
+# Intialize TTS (tacotron2) and Vocoder (HiFIGAN)
+fastspeech2 = FastSpeech2InternalAlignment.from_hparams(source="speechbrain/tts-fastspeech2-internal-alignment-ljspeech", savedir="tmpdir_tts")
+hifi_gan = HIFIGAN.from_hparams(source="speechbrain/tts-hifigan-ljspeech", savedir="tmpdir_vocoder")
+
+# Run TTS with text input
+input_text = "Welcome to speechbrain, this is a test run with fastspeech internal alignment."
+
+mel_output, durations, pitch, energy = fastspeech2.encode_text(
+  [input_text],
+  pace=1.0,        # scale up/down the speed
+  pitch_rate=1.0,  # scale up/down the pitch
+  energy_rate=1.0, # scale up/down the energy
+)
+
+# Running Vocoder (spectrogram-to-waveform)
+waveforms = hifi_gan.decode_batch(mel_output)
+
+# Save the waverform
+torchaudio.save('example_TTS_input_text.wav', waveforms.squeeze(1), 22050)
+
+
+# Run TTS with phoneme input
+input_phonemes = ['W', 'ER', ' ', 'DH', 'AH', ' ', 'L', 'IY', 'D', 'ER', 'Z', ' ', 'IH', 'N', ' ', 'DH', 'IH', 'S', ' ', 'L', 'AH', 'K', 'L', 'AH', 'S', ' ', 'CH', 'EY', 'N', 'JH', ';', " ", 'DH', 'OW', ' ', 'AW', 'ER', ' ', 'OW', 'N', ' ', 'B', 'AE', 'S', 'K', 'ER', 'V', 'IH', 'L', ';', " ", 'HH', 'UW', ' ', 'W', 'AA', 'Z', ' ', 'AE', 'T', ' ', 'W', 'ER', 'K', ' ', 'S', 'AH', 'M', ' ', 'Y', 'IH', 'R', 'Z', ' ', 'B', 'IH', 'F', 'AO', 'R', ' ', 'DH', 'EH', 'M', ';', " ", 'W', 'EH', 'N', 'T', ' ', 'M', 'AH', 'CH', ' ', 'AA', 'N', ' ', 'DH', 'AH', ' ', 'S', 'EY', 'M', ' ', 'L', 'AY', 'N', 'Z', ';']
+
+mel_output, durations, pitch, energy = fastspeech2.encode_phoneme(
+  [input_phonemes],
+  pace=1.0,        # scale up/down the speed
+  pitch_rate=1.0,  # scale up/down the pitch
+  energy_rate=1.0, # scale up/down the energy
+)
+
+# Running Vocoder (spectrogram-to-waveform)
+waveforms = hifi_gan.decode_batch(mel_output)
+
+# Save the waverform
+torchaudio.save('example_TTS_input_phoneme.wav', waveforms.squeeze(1), 22050)
+```
+
+If you want to generate multiple sentences in one-shot, you can do in this way:
+
+```python
+from speechbrain.pretrained import FastSpeech2InternalAlignment
+fastspeech2 = FastSpeech2InternalAlignment.from_hparams(source="speechbrain/tts-fastspeech2-internal-alignment-ljspeech", savedir="tmpdir_tts")
+items = [
+       "A quick brown fox jumped over the lazy dog",
+       "How much wood would a woodchuck chuck?",
+       "Never odd or even"
+]
+mel_outputs, durations, pitch, energy = fastspeech2.encode_text(
+  items,
+  pace=1.0,        # scale up/down the speed
+  pitch_rate=1.0,  # scale up/down the pitch
+  energy_rate=1.0, # scale up/down the energy
+)
+```
+
+### Inference on GPU
+To perform inference on the GPU, add  `run_opts={"device":"cuda"}`  when calling the `from_hparams` method.
+
+### Training
+The model was trained with SpeechBrain.
+To train it from scratch follow these steps:
+1. Clone SpeechBrain:
+```bash
+git clone https://github.com/speechbrain/speechbrain/
+```
+2. Install it:
+```bash
+cd speechbrain
+pip install -r requirements.txt
+pip install -e .
+```
+3. Run Training:
+```bash
+cd recipes/LJSpeech/TTS/fastspeech2/
+python train_internal_alignment.py hparams/train_internal_alignment.yaml --data_folder=/your_folder/LJSpeech-1.1
+```
+You can find our training results (models, logs, etc) [here](https://www.dropbox.com/sh/ca2rjc5x1ypm7aj/AADTJXxTina5Lt8BcdWs7LP5a?dl=0).
+
+### Limitations
+The SpeechBrain team does not provide any warranty on the performance achieved by this model when used on other datasets.
+
+# **About SpeechBrain**
+- Website: https://speechbrain.github.io/
+- Code: https://github.com/speechbrain/speechbrain/
+- HuggingFace: https://huggingface.co/speechbrain/
+
+
+# **Citing SpeechBrain**
+Please, cite SpeechBrain if you use it for your research or business.
+
+```bibtex
+@misc{speechbrain,
+  title={{SpeechBrain}: A General-Purpose Speech Toolkit},
+  author={Mirco Ravanelli and Titouan Parcollet and Peter Plantinga and Aku Rouhe and Samuele Cornell and Loren Lugosch and Cem Subakan and Nauman Dawalatabad and Abdelwahab Heba and Jianyuan Zhong and Ju-Chieh Chou and Sung-Lin Yeh and Szu-Wei Fu and Chien-Feng Liao and Elena Rastorgueva and François Grondin and William Aris and Hwidong Na and Yan Gao and Renato De Mori and Yoshua Bengio},
+  year={2021},
+  eprint={2106.04624},
+  archivePrefix={arXiv},
+  primaryClass={eess.AS},
+  note={arXiv:2106.04624}
+}
+```

config.json

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+{
+    "speechbrain_interface": "FastSpeech2",
+    "vocoder_interface": "HiFIGAN",
+    "vocoder_model_id": "speechbrain/tts-hifigan-ljspeech",
+    "sample_rate": 22050
+  }

hyperparams.yaml

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model.ckpt

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