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ESPnet2-TTS realtime demonstration

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ESPnet2-TTS realtime demonstration

This notebook provides a demonstration of the realtime E2E-TTS using ESPnet2-TTS and ParallelWaveGAN repo.

  • ESPnet2-TTS: https://github.com/espnet/espnet/tree/master/egs2/TEMPLATE/tts1
  • ParallelWaveGAN: https://github.com/kan-bayashi/ParallelWaveGAN

Author: Tomoki Hayashi (@kan-bayashi)

Installation

# NOTE: pip shows imcompatible errors due to preinstalled libraries but you do not need to care
!pip install -q espnet==202308 pypinyin==0.44.0 parallel_wavegan==0.5.4 gdown==4.4.0 espnet_model_zoo

Single speaker model demo

Model Selection

Please select model: English, Japanese, and Mandarin are supported.

You can try end-to-end text2wav model & combination of text2mel and vocoder.
If you use text2wav model, you do not need to use vocoder (automatically disabled).

Text2wav models:

  • VITS

Text2mel models:

  • Tacotron2
  • Transformer-TTS
  • (Conformer) FastSpeech
  • (Conformer) FastSpeech2

Vocoders:

  • Parallel WaveGAN
  • Multi-band MelGAN
  • HiFiGAN
  • Style MelGAN.

The terms of use follow that of each corpus. We use the following corpora:

  • ljspeech_*: LJSpeech dataset
    • https://keithito.com/LJ-Speech-Dataset/
  • jsut_*: JSUT corpus
    • https://sites.google.com/site/shinnosuketakamichi/publication/jsut
  • jvs_*: JVS corpus + JSUT corpus
    • https://sites.google.com/site/shinnosuketakamichi/research-topics/jvs_corpus
    • https://sites.google.com/site/shinnosuketakamichi/publication/jsut
  • tsukuyomi_*: つくよみちゃんコーパス + JSUT corpus
    • https://tyc.rei-yumesaki.net/material/corpus/
    • https://sites.google.com/site/shinnosuketakamichi/publication/jsut
  • csmsc_*: Chinese Standard Mandarin Speech Corpus
    • https://www.data-baker.com/open_source.html
#@title Choose English model { run: "auto" }
lang = 'English'
tag = 'kan-bayashi/ljspeech_vits' #@param ["kan-bayashi/ljspeech_tacotron2", "kan-bayashi/ljspeech_fastspeech", "kan-bayashi/ljspeech_fastspeech2", "kan-bayashi/ljspeech_conformer_fastspeech2", "kan-bayashi/ljspeech_joint_finetune_conformer_fastspeech2_hifigan", "kan-bayashi/ljspeech_joint_train_conformer_fastspeech2_hifigan", "kan-bayashi/ljspeech_vits"] {type:"string"}
vocoder_tag = "none" #@param ["none", "parallel_wavegan/ljspeech_parallel_wavegan.v1", "parallel_wavegan/ljspeech_full_band_melgan.v2", "parallel_wavegan/ljspeech_multi_band_melgan.v2", "parallel_wavegan/ljspeech_hifigan.v1", "parallel_wavegan/ljspeech_style_melgan.v1"] {type:"string"}
#@title Choose Japanese model { run: "auto" }
lang = 'Japanese'
tag = 'kan-bayashi/jsut_full_band_vits_prosody' #@param ["kan-bayashi/jsut_tacotron2", "kan-bayashi/jsut_transformer", "kan-bayashi/jsut_fastspeech", "kan-bayashi/jsut_fastspeech2", "kan-bayashi/jsut_conformer_fastspeech2", "kan-bayashi/jsut_conformer_fastspeech2_accent", "kan-bayashi/jsut_conformer_fastspeech2_accent_with_pause", "kan-bayashi/jsut_vits_accent_with_pause", "kan-bayashi/jsut_full_band_vits_accent_with_pause", "kan-bayashi/jsut_tacotron2_prosody", "kan-bayashi/jsut_transformer_prosody", "kan-bayashi/jsut_conformer_fastspeech2_tacotron2_prosody", "kan-bayashi/jsut_vits_prosody", "kan-bayashi/jsut_full_band_vits_prosody", "kan-bayashi/jvs_jvs010_vits_prosody", "kan-bayashi/tsukuyomi_full_band_vits_prosody"] {type:"string"}
vocoder_tag = 'none' #@param ["none", "parallel_wavegan/jsut_parallel_wavegan.v1", "parallel_wavegan/jsut_multi_band_melgan.v2", "parallel_wavegan/jsut_style_melgan.v1", "parallel_wavegan/jsut_hifigan.v1"] {type:"string"}
#@title Choose Mandarin model { run: "auto" }
lang = 'Mandarin'
tag = 'kan-bayashi/csmsc_full_band_vits' #@param ["kan-bayashi/csmsc_tacotron2", "kan-bayashi/csmsc_transformer", "kan-bayashi/csmsc_fastspeech", "kan-bayashi/csmsc_fastspeech2", "kan-bayashi/csmsc_conformer_fastspeech2", "kan-bayashi/csmsc_vits", "kan-bayashi/csmsc_full_band_vits"] {type: "string"}
vocoder_tag = "none" #@param ["none", "parallel_wavegan/csmsc_parallel_wavegan.v1", "parallel_wavegan/csmsc_multi_band_melgan.v2", "parallel_wavegan/csmsc_hifigan.v1", "parallel_wavegan/csmsc_style_melgan.v1"] {type:"string"}

Model Setup

from espnet2.bin.tts_inference import Text2Speech
from espnet2.utils.types import str_or_none

text2speech = Text2Speech.from_pretrained(
    model_tag=str_or_none(tag),
    vocoder_tag=str_or_none(vocoder_tag),
    device="cuda",
    # Only for Tacotron 2 & Transformer
    threshold=0.5,
    # Only for Tacotron 2
    minlenratio=0.0,
    maxlenratio=10.0,
    use_att_constraint=False,
    backward_window=1,
    forward_window=3,
    # Only for FastSpeech & FastSpeech2 & VITS
    speed_control_alpha=1.0,
    # Only for VITS
    noise_scale=0.333,
    noise_scale_dur=0.333,
)

Synthesis

import time
import torch

# decide the input sentence by yourself
print(f"Input your favorite sentence in {lang}.")
x = input()

# synthesis
with torch.no_grad():
    start = time.time()
    wav = text2speech(x)["wav"]
rtf = (time.time() - start) / (len(wav) / text2speech.fs)
print(f"RTF = {rtf:5f}")

# let us listen to generated samples
from IPython.display import display, Audio
display(Audio(wav.view(-1).cpu().numpy(), rate=text2speech.fs))

Multi-speaker Model Demo

Model Selection

Now we provide only English multi-speaker pretrained model.

The terms of use follow that of each corpus. We use the following corpora:

  • libritts_*: LibriTTS corpus
    • http://www.openslr.org/60
  • vctk_*: English Multi-speaker Corpus for CSTR Voice Cloning Toolkit
    • http://www.udialogue.org/download/cstr-vctk-corpus.html
#@title English multi-speaker pretrained model { run: "auto" }
lang = 'English'
tag = 'kan-bayashi/vctk_full_band_multi_spk_vits' #@param ["kan-bayashi/vctk_gst_tacotron2", "kan-bayashi/vctk_gst_transformer", "kan-bayashi/vctk_xvector_tacotron2", "kan-bayashi/vctk_xvector_transformer", "kan-bayashi/vctk_xvector_conformer_fastspeech2", "kan-bayashi/vctk_gst+xvector_tacotron2", "kan-bayashi/vctk_gst+xvector_transformer", "kan-bayashi/vctk_gst+xvector_conformer_fastspeech2", "kan-bayashi/vctk_multi_spk_vits", "kan-bayashi/vctk_full_band_multi_spk_vits", "kan-bayashi/libritts_xvector_transformer", "kan-bayashi/libritts_xvector_conformer_fastspeech2", "kan-bayashi/libritts_gst+xvector_transformer", "kan-bayashi/libritts_gst+xvector_conformer_fastspeech2", "kan-bayashi/libritts_xvector_vits"] {type:"string"}
vocoder_tag = "none" #@param ["none", "parallel_wavegan/vctk_parallel_wavegan.v1.long", "parallel_wavegan/vctk_multi_band_melgan.v2", "parallel_wavegan/vctk_style_melgan.v1", "parallel_wavegan/vctk_hifigan.v1", "parallel_wavegan/libritts_parallel_wavegan.v1.long", "parallel_wavegan/libritts_multi_band_melgan.v2", "parallel_wavegan/libritts_hifigan.v1", "parallel_wavegan/libritts_style_melgan.v1"] {type:"string"}

Model Setup

from espnet2.bin.tts_inference import Text2Speech
from espnet2.utils.types import str_or_none

text2speech = Text2Speech.from_pretrained(
    model_tag=str_or_none(tag),
    vocoder_tag=str_or_none(vocoder_tag),
    device="cuda",
    # Only for Tacotron 2 & Transformer
    threshold=0.5,
    # Only for Tacotron 2
    minlenratio=0.0,
    maxlenratio=10.0,
    use_att_constraint=False,
    backward_window=1,
    forward_window=3,
    # Only for FastSpeech & FastSpeech2 & VITS
    speed_control_alpha=1.0,
    # Only for VITS
    noise_scale=0.333,
    noise_scale_dur=0.333,
)

Speaker selection

For multi-speaker model, we need to provide X-vector and/or the reference speech to decide the speaker characteristics.
For X-vector, you can select the speaker from the dumped x-vectors.
For the reference speech, you can use any speech but please make sure the sampling rate is matched.

import glob
import os
import numpy as np
import kaldiio

# Get model directory path
from espnet_model_zoo.downloader import ModelDownloader
d = ModelDownloader()
model_dir = os.path.dirname(d.download_and_unpack(tag)["train_config"])

# X-vector selection
spembs = None
if text2speech.use_spembs:
    xvector_ark = [p for p in glob.glob(f"{model_dir}/../../dump/**/spk_xvector.ark", recursive=True) if "tr" in p][0]
    xvectors = {k: v for k, v in kaldiio.load_ark(xvector_ark)}
    spks = list(xvectors.keys())

    # randomly select speaker
    random_spk_idx = np.random.randint(0, len(spks))
    spk = spks[random_spk_idx]
    spembs = xvectors[spk]
    print(f"selected spk: {spk}")

# Speaker ID selection
sids = None
if text2speech.use_sids:
    spk2sid = glob.glob(f"{model_dir}/../../dump/**/spk2sid", recursive=True)[0]
    with open(spk2sid) as f:
        lines = [line.strip() for line in f.readlines()]
    sid2spk = {int(line.split()[1]): line.split()[0] for line in lines}
    
    # randomly select speaker
    sids = np.array(np.random.randint(1, len(sid2spk)))
    spk = sid2spk[int(sids)]
    print(f"selected spk: {spk}")

# Reference speech selection for GST
speech = None
if text2speech.use_speech:
    # you can change here to load your own reference speech
    # e.g.
    # import soundfile as sf
    # speech, fs = sf.read("/path/to/reference.wav")
    # speech = torch.from_numpy(speech).float()
    speech = torch.randn(50000,) * 0.01

Synthesis

import time
import torch

# decide the input sentence by yourself
print(f"Input your favorite sentence in {lang}.")
x = input()

# synthesis
with torch.no_grad():
    start = time.time()
    wav = text2speech(x, speech=speech, spembs=spembs, sids=sids)["wav"]
rtf = (time.time() - start) / (len(wav) / text2speech.fs)
print(f"RTF = {rtf:5f}")

# let us listen to generated samples
from IPython.display import display, Audio
display(Audio(wav.view(-1).cpu().numpy(), rate=text2speech.fs))
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