Abstract: This paper describes Tacotron 2, a neural network architecture for speech synthesis directly from text. The system is composed of a recurrent sequence-to-sequence feature prediction network that maps character embeddings to mel-scale spectrograms, followed by a modified WaveNet model acting as a vocoder to synthesize timedomain ...The Tacotron 2 and WaveGlow model form a text-to-speech system that enables user to synthesise a natural sounding speech from raw transcripts without any additional prosody information. The...Tacotron-2 + Multi-band MelGAN Unless you work on a ship, it's unlikely that you use the word boatswain in everyday conversation, so it's understandably a tricky one. The word - which refers to a petty officer in charge of hull maintenance is not pronounced boats-wain Rather, it's bo-sun to reflect the salty pronunciation of sailors, as The ...Tacotron 2 is one of the most successful sequence-to-sequence models for text-to-speech, at the time of publication. The experiments delivered by TechLab Since we got a audio file of around 30 mins, the datasets we could derived from it was small.tacotron_pytorch. PyTorch implementation of Tacotron speech synthesis model. Inspired from keithito/tacotron. Currently not as much good speech quality as keithito/tacotron can generate, but it seems to be basically working. You can find some generated speech examples trained on LJ Speech Dataset at here.tts2 recipe. tts2 recipe is based on Tacotron2’s spectrogram prediction network [1] and Tacotron’s CBHG module [2]. Instead of using inverse mel-basis, CBHG module is used to convert log mel-filter bank to linear spectrogram. The recovery of the phase components is the same as tts1. v.0.4.0: tacotron2.v2.keonlee9420 / Comprehensive-Tacotron2. Star 37. Code. Issues. Pull requests. PyTorch Implementation of Google's Natural TTS Synthesis by Conditioning WaveNet on Mel Spectrogram Predictions. This implementation supports both single-, multi-speaker TTS and several techniques to enforce the robustness and efficiency of the model. text-to-speech ...In this tutorial i am going to explain the paper "Natural TTS synthesis by conditioning wavenet on Mel-Spectrogram predictions"Paper: https://arxiv.org/pdf/1...Text2Spec models (Tacotron, Tacotron2, Glow-TTS, SpeedySpeech). Speaker Encoder to compute speaker embeddings efficiently. Vocoder models (MelGAN, Multiband-MelGAN, GAN-TTS, ParallelWaveGAN, WaveGrad, WaveRNN) Fast and efficient model training. Detailed training logs on console and Tensorboard. Support for multi-speaker TTS.Tacotron2 is an encoder-attention-decoder. The encoder is made of three parts in sequence: 1) a word embedding, 2) a convolutional network, and 3) a bi-directional LSTM. The encoded represented is connected to the decoder via a Location Sensitive Attention module. The decoder is comprised of a 2 layer LSTM network, a convolutional postnet, and ...Abstract: This paper describes Tacotron 2, a neural network architecture for speech synthesis directly from text. The system is composed of a recurrent sequence-to-sequence feature prediction network that maps character embeddings to mel-scale spectrograms, followed by a modified WaveNet model acting as a vocoder to synthesize timedomain ...In this video I will show you How to Clone ANYONE'S Voice Using AI with Tacotron running on a Google Colab notebook. We'll be training artificial intelligenc...Tacotron 2: Human-like Speech Synthesis From Text By AI. Our team was assigned the task of repeating the results of the work of the artificial neural network for speech synthesis Tacotron 2 by Google. This is a story of the thorny path we have gone through during the project. In the very end of the article we will share a few examples of text ...If you get a P4 or K80, factory reset the runtime and try again. Step 2: Mount Google Drive. Step 3: Configure training data paths. Upload the following to your Drive and change the paths below: Step 4: Download Tacotron and HiFi-GAN. Step 5: Generate ground truth-aligned spectrograms.Tacotron2 CPU Synthesizer. The "tacotron_id" is where you can put a link to your trained tacotron2 model from Google Drive. If the audio sounds too artificial, you can lower the superres_strength. Config: Restart the runtime to apply any changes. tacotron_id :In this video I will show you How to Clone ANYONE'S Voice Using AI with Tacotron running on a Google Colab notebook. We'll be training artificial intelligenc...GitHub - keithito/tacotron: A TensorFlow implementation of ...以下の記事を参考に書いてます。 ・Tacotron 2 | PyTorch 1. Tacotron2 「Tacotron2」は、Googleで開発されたテキストをメルスペクトログラムに変換するためのアルゴリズムです。「Tacotron2」でテキストをメルスペクトログラムに変換後、「WaveNet」または「WaveGlow」(WaveNetの改良版)でメルスペクトログラムを ...We would like to show you a description here but the site won’t allow us.TacoTron 2. TACOTRON 2. CookiePPP Tacotron 2 Colabs. This is the main Synthesis Colab. This is the simplified Synthesis Colab. This is supposedly a newer version of the simplified Synthesis Colab. For the sake of completeness, this is the training colabTacotronV2生成Mel文件，利用griffin lim算法恢复语音，修改脚本 tacotron_synthesize.py 中text python tacotron_synthesize . py 或命令行输入Given <text, audio> pairs, Tacotron can be trained completely from scratch with random initialization. It does not require phoneme-level alignment, so it can easily scale to using large amounts of acoustic data with transcripts. With a simple waveform synthesis technique, Tacotron produces a 3.82 mean opinion score (MOS) on anHello, just to share my results.I’m stopping at 47 k steps for tacotron 2: The gaps seems normal for my data and not affecting the performance. As reference for others: Final audios: (feature-23 is a mouth twister) 47k.zip (1,0 MB) Experiment with new LPCNet model: real speech.wav = audio from the training set old lpcnet model.wav = generated using the real features of real speech.wav with ...Model Description. The Tacotron 2 and WaveGlow model form a text-to-speech system that enables user to synthesise a natural sounding speech from raw transcripts without any additional prosody information. The Tacotron 2 model produces mel spectrograms from input text using encoder-decoder architecture. 以下の記事を参考に書いてます。 ・keithito/tacotron 前回 1. オーディオサンプル このリポジトリを使用して学習したモデルで生成したオーディオサンプルはここで確認できます。 ・1番目は、「LJ Speechデータセット」で441Kステップの学習を行いました。音声は約20Kステップで理解できるようになり ...Tacotron 2 is a neural network architecture for speech synthesis directly from text. It consists of two components: a recurrent sequence-to-sequence feature prediction network with attention which predicts a sequence of mel spectrogram frames from an input character sequence a modified version of WaveNet which generates time-domain waveform samples conditioned on the predicted mel spectrogram ...Tacotron-2 + Multi-band MelGAN Unless you work on a ship, it's unlikely that you use the word boatswain in everyday conversation, so it's understandably a tricky one. The word - which refers to a petty officer in charge of hull maintenance is not pronounced boats-wain Rather, it's bo-sun to reflect the salty pronunciation of sailors, as The ...Pull requests. Mimic Recording Studio is a Docker-based application you can install to record voice samples, which can then be trained into a TTS voice with Mimic2. docker voice microphone tts mycroft hacktoberfest recording-studio tacotron mimic mycroftai tts-engine. Updated on Apr 28.View Details. Request a review. Learn moretacotron_pytorch. PyTorch implementation of Tacotron speech synthesis model. Inspired from keithito/tacotron. Currently not as much good speech quality as keithito/tacotron can generate, but it seems to be basically working. You can find some generated speech examples trained on LJ Speech Dataset at here.Tacotron 2 Speech Synthesis Tutorial by Jonx0r. Publication date 2021-05-05 Usage Attribution-NoDerivatives 4.0 International Topics tacotron, skyrim, machine ...Tacotron 2 is a neural network architecture for speech synthesis directly from text. It consists of two components: a recurrent sequence-to-sequence feature prediction network with attention which predicts a sequence of mel spectrogram frames from an input character sequence. Tacotron 2 is one of the most successful sequence-to-sequence models for text-to-speech, at the time of publication. The experiments delivered by TechLab Since we got a audio file of around 30 mins, the datasets we could derived from it was small.We have the TorToiSe repo, the SV2TTS repo, and from here you have the other models like Tacotron 2, FastSpeech 2, and such. A there is a lot that goes into training a baseline for these models on the LJSpeech and LibriTTS datasets. Fine tuning is left up to the user.By Xu Tan , Senior Researcher Neural network based text to speech (TTS) has made rapid progress in recent years. Previous neural TTS models (e.g., Tacotron 2) first generate mel-spectrograms autoregressively from text and then synthesize speech from the generated mel-spectrograms using a separately trained vocoder. They usually suffer from slow inference speed, robustness (word skipping and ...Hello, just to share my results.I’m stopping at 47 k steps for tacotron 2: The gaps seems normal for my data and not affecting the performance. As reference for others: Final audios: (feature-23 is a mouth twister) 47k.zip (1,0 MB) Experiment with new LPCNet model: real speech.wav = audio from the training set old lpcnet model.wav = generated using the real features of real speech.wav with ...Model Description. The Tacotron 2 and WaveGlow model form a text-to-speech system that enables user to synthesise a natural sounding speech from raw transcripts without any additional prosody information. The Tacotron 2 model produces mel spectrograms from input text using encoder-decoder architecture. tts2 recipe. tts2 recipe is based on Tacotron2’s spectrogram prediction network [1] and Tacotron’s CBHG module [2]. Instead of using inverse mel-basis, CBHG module is used to convert log mel-filter bank to linear spectrogram. The recovery of the phase components is the same as tts1. v.0.4.0: tacotron2.v2.そこで、「 NVIDIA/tacotron2 」で日本語の音声合成に挑戦してみました。. とはいえ、「 つくよみちゃんコーパス 」の学習をいきなりやると失敗しそうなので、今回はシロワニさんの解説にそって、「 Japanese Single Speaker Speech Dataset 」を使った音声合成に挑戦し ...Tacotron2 is the model we use to generate spectrogram from the encoded text. For the detail of the model, please refer to the paper. It is easy to instantiate a Tacotron2 model with pretrained weight, however, note that the input to Tacotron2 models need to be processed by the matching text processor. We are thankful to the Tacotron 2 paper authors, specially Jonathan Shen, Yuxuan Wang and Zongheng Yang. About Tacotron 2 - PyTorch implementation with faster-than-realtime inference modified to enable cross lingual voice cloning.1. Despite recent progress in the training of large language models like GPT-2 for the Persian language, there is little progress in the training or even open-sourcing Persian TTS models. Recently ...2 branches 1 tag. Code. justinjohn0306 Add files via upload. ea031e1 on Jul 8. 163 commits. assets. Add files via upload. last year.Pull requests. Mimic Recording Studio is a Docker-based application you can install to record voice samples, which can then be trained into a TTS voice with Mimic2. docker voice microphone tts mycroft hacktoberfest recording-studio tacotron mimic mycroftai tts-engine. Updated on Apr 28.Once readied for production, Tacotron 2 could be an even more powerful addition to the service. However, the system is only trained to mimic the one female voice; to speak like a male or different ...Tacotron 2 (without wavenet) PyTorch implementation of Natural TTS Synthesis By Conditioning Wavenet On Mel Spectrogram Predictions. This implementation includes distributed and automatic mixed precision support and uses the LJSpeech dataset. Distributed and Automatic Mixed Precision support relies on NVIDIA's Apex and AMP.GitHub - keithito/tacotron: A TensorFlow implementation of ...そこで、「 NVIDIA/tacotron2 」で日本語の音声合成に挑戦してみました。. とはいえ、「 つくよみちゃんコーパス 」の学習をいきなりやると失敗しそうなので、今回はシロワニさんの解説にそって、「 Japanese Single Speaker Speech Dataset 」を使った音声合成に挑戦し ...Tacotron 2 - Persian. Visit this demo page to listen to some audio samples. This repository contains implementation of a Persian Tacotron model in PyTorch with a dataset preprocessor for the Common Voice dataset. For generating better quality audios, the acoustic features (mel-spectrogram) are fed to a WaveRNN model.Once readied for production, Tacotron 2 could be an even more powerful addition to the service. However, the system is only trained to mimic the one female voice; to speak like a male or different ...In this video I will show you How to Clone ANYONE'S Voice Using AI with Tacotron running on a Google Colab notebook. We'll be training artificial intelligenc...Part 2 will help you put your audio files and transcriber into tacotron to make your deep fake. If you need additional help, leave a comment. URL to notebook...@CookiePPP this seem to be quite detailed, thank you! And I have another question, I tried training with LJ Speech dataset and having 2 problems: I changed the epochs value in hparams.py file to 50 for a quick run, but it run more than 50 epochs.Pull requests. Mimic Recording Studio is a Docker-based application you can install to record voice samples, which can then be trained into a TTS voice with Mimic2. docker voice microphone tts mycroft hacktoberfest recording-studio tacotron mimic mycroftai tts-engine. Updated on Apr 28.Jun 11, 2020 · Tacotron 2 (without wavenet) PyTorch implementation of Natural TTS Synthesis By Conditioning Wavenet On Mel Spectrogram Predictions . This implementation includes distributed and automatic mixed precision support and uses the LJSpeech dataset . 1. Despite recent progress in the training of large language models like GPT-2 for the Persian language, there is little progress in the training or even open-sourcing Persian TTS models. Recently ...I'm trying to improve French Tacotron2 DDC, because there is some noises you don't have in English synthesizer made with Tacotron 2. There is also some pronunciation defaults on nasal fricatives, certainly because missing phonemes (ɑ̃, ɛ̃) like in œ̃n ɔ̃ɡl də ma tɑ̃t ɛt ɛ̃kaʁne (Un ongle de ma tante est incarné.)tacotron_pytorch. PyTorch implementation of Tacotron speech synthesis model. Inspired from keithito/tacotron. Currently not as much good speech quality as keithito/tacotron can generate, but it seems to be basically working. You can find some generated speech examples trained on LJ Speech Dataset at here.This is a proof of concept for Tacotron2 text-to-speech synthesis. Models used here were trained on LJSpeech dataset. Notice: The waveform generation is super slow since it implements naive autoregressive generation. It doesn't use parallel generation method described in Parallel WaveNet. Estimated time to complete: 2 ~ 3 hours.The recently developed TTS engines are shifting towards end-to-end approaches utilizing models such as Tacotron, Tacotron-2, WaveNet, and WaveGlow. The reason is that it enables a TTS service provider to focus on developing training and validating datasets comprising of labelled texts and recorded speeches instead of designing an entirely new ...Tacotron 2 (without wavenet) PyTorch implementation of Natural TTS Synthesis By Conditioning Wavenet On Mel Spectrogram Predictions. This implementation includes distributed and automatic mixed precision support and uses the LJSpeech dataset. Distributed and Automatic Mixed Precision support relies on NVIDIA's Apex and AMP.tacotron-2-mandarin. Tensorflow implementation of DeepMind's Tacotron-2. A deep neural network architecture described in this paper: Natural TTS synthesis by conditioning Wavenet on MEL spectogram predictions. Repo StructureSpongeBob on Jeopardy! is the first video that features uberduck-generated SpongeBob speech in it. It has been made with the first version of uberduck's SpongeBob SquarePants (regular) Tacotron 2 model by Gosmokeless28, and it was posted on May 1, 2021. Likewise, Uberduck.ai Test/preview is the first case of uberduck having been used to make ...🤪 TensorFlowTTS provides real-time state-of-the-art speech synthesis architectures such as Tacotron-2, Melgan, Multiband-Melgan, FastSpeech, FastSpeech2 based-on TensorFlow 2. With Tensorflow 2, we can speed-up training/inference progress, optimizer further by using fake-quantize aware and pruning , make TTS models can be run faster than ...Tacotron 2. หลังจากที่ได้รู้จักความเป็นมาของเทคโนโลยี TTS จากในอดีตจนถึงปัจจุบันแล้ว ผมจะแกะกล่องเทคโนโลยีของ Tacotron 2 ให้ดูกัน ซึ่งอย่างที่กล่าวไป ...Comprehensive Tacotron2 - PyTorch Implementation. PyTorch Implementation of Google's Natural TTS Synthesis by Conditioning WaveNet on Mel Spectrogram Predictions.Unlike many previous implementations, this is kind of a Comprehensive Tacotron2 where the model supports both single-, multi-speaker TTS and several techniques such as reduction factor to enforce the robustness of the decoder alignment.Once readied for production, Tacotron 2 could be an even more powerful addition to the service. However, the system is only trained to mimic the one female voice; to speak like a male or different ...tacotron_pytorch. PyTorch implementation of Tacotron speech synthesis model. Inspired from keithito/tacotron. Currently not as much good speech quality as keithito/tacotron can generate, but it seems to be basically working. You can find some generated speech examples trained on LJ Speech Dataset at here.Earlier this year, Google published a paper, Tacotron: A Fully End-to-End Text-To-Speech Synthesis Model , where they present a neural text-to-speech model that learns to synthesize speech directly from (text, audio) pairs. However, they didn't release their source code or training data. This is an attempt to provide an open-source ...Tacotron 2 Speech Synthesis Tutorial by Jonx0r. Publication date 2021-05-05 Usage Attribution-NoDerivatives 4.0 International Topics tacotron, skyrim, machine ...I'm trying to improve French Tacotron2 DDC, because there is some noises you don't have in English synthesizer made with Tacotron 2. There is also some pronunciation defaults on nasal fricatives, certainly because missing phonemes (ɑ̃, ɛ̃) like in œ̃n ɔ̃ɡl də ma tɑ̃t ɛt ɛ̃kaʁne (Un ongle de ma tante est incarné.)Apr 4, 2023 · The Tacotron 2 and WaveGlow model enables you to efficiently synthesize high quality speech from text. Both models are trained with mixed precision using Tensor Cores on Volta, Turing, and the NVIDIA Ampere GPU architectures. Instructions for setting up Colab are as follows: 1. Open a new Python 3 notebook. 2. Import this notebook from GitHub (File -> Upload Notebook -> "GITHUB" tab -> copy/paste GitHub URL) 3. Connect to an instance with a GPU (Runtime -> Change runtime type -> select "GPU" for hardware accelerator) 4. Run this cell to set up dependencies# .Instructions for setting up Colab are as follows: 1. Open a new Python 3 notebook. 2. Import this notebook from GitHub (File -> Upload Notebook -> "GITHUB" tab -> copy/paste GitHub URL) 3. Connect to an instance with a GPU (Runtime -> Change runtime type -> select "GPU" for hardware accelerator) 4. Run this cell to set up dependencies# .Tacotron2 CPU Synthesizer. The "tacotron_id" is where you can put a link to your trained tacotron2 model from Google Drive. If the audio sounds too artificial, you can lower the superres_strength. Config: Restart the runtime to apply any changes. tacotron_id :Download our published Tacotron 2 model; Download our published WaveGlow model; jupyter notebook --ip=127.0.0.1 --port=31337; Load inference.ipynb; N.b. When performing Mel-Spectrogram to Audio synthesis, make sure Tacotron 2 and the Mel decoder were trained on the same mel-spectrogram representation. Related repos(opens in new tab) Text to speech (TTS) has attracted a lot of attention recently due to advancements in deep learning. Neural network-based TTS models (such as Tacotron 2, DeepVoice 3 and Transformer TTS) have outperformed conventional concatenative and statistical parametric approaches in terms of speech quality. Neural network-based TTS models usually first generate a […]以下の記事を参考に書いてます。 ・Tacotron 2 | PyTorch 1. Tacotron2 「Tacotron2」は、Googleで開発されたテキストをメルスペクトログラムに変換するためのアルゴリズムです。「Tacotron2」でテキストをメルスペクトログラムに変換後、「WaveNet」または「WaveGlow」(WaveNetの改良版)でメルスペクトログラムを ...It contains also a few samples synthesized by a monolingual vanilla Tacotron trained on LJ Speech with the Griffin-Lim vocoder (a sanity check of our implementation). Our best model supporting code-switching or voice-cloning can be downloaded here and the best model trained on the whole CSS10 dataset without the ambition to do voice-cloning is ...This is a proof of concept for Tacotron2 text-to-speech synthesis. Models used here were trained on LJSpeech dataset. Notice: The waveform generation is super slow since it implements naive autoregressive generation. It doesn't use parallel generation method described in Parallel WaveNet. Estimated time to complete: 2 ~ 3 hours.By Xu Tan , Senior Researcher Neural network based text to speech (TTS) has made rapid progress in recent years. Previous neural TTS models (e.g., Tacotron 2) first generate mel-spectrograms autoregressively from text and then synthesize speech from the generated mel-spectrograms using a separately trained vocoder. They usually suffer from slow inference speed, robustness (word skipping and ...Tacotron2 is a mel-spectrogram generator, designed to be used as the first part of a neural text-to-speech system in conjunction with a neural vocoder. Model Architecture ------------------ Tacotron 2 is a LSTM-based Encoder-Attention-Decoder model that converts text to mel spectrograms.I worked on Tacotron-2’s implementation and experimentation as a part of my Grad school course for three months with a Munich based AI startup called Luminovo.AI . I wanted to develop such a ...
Tacotron 2 is one of the most successful sequence-to-sequence models for text-to-speech, at the time of publication. The experiments delivered by TechLab Since we got a audio file of around 30 mins, the datasets we could derived from it was small.. Miles
Tacotron 2 is a neural network architecture for speech synthesis directly from text. It consists of two components: a recurrent sequence-to-sequence feature prediction network with attention which predicts a sequence of mel spectrogram frames from an input character sequence. Once readied for production, Tacotron 2 could be an even more powerful addition to the service. However, the system is only trained to mimic the one female voice; to speak like a male or different ...We adopt Tacotron 2 [2] as our backbone TTS model and denote it as Tacotron for simplicity. Tacotron has the input format of text embedding; thus, the spectrogram inputs are not directly applicable. To feed the warped spectrograms to the model’s encoder as input, we replace the text embedding look-up table of Tacotron with a simpleTacotron và tacotron2 đều do Google public cho cộng đồng, là SOTA trong lĩnh vực tổng hợp tiếng nói. 2. Kiến trúc tacotron 2 2.1 Mel spectrogram. Trước khi đi vào chi tiết kiến trúc tacotron/tacotron2, bạn cần đọc một chút về mel spectrogram.Comprehensive Tacotron2 - PyTorch Implementation. PyTorch Implementation of Google's Natural TTS Synthesis by Conditioning WaveNet on Mel Spectrogram Predictions.Unlike many previous implementations, this is kind of a Comprehensive Tacotron2 where the model supports both single-, multi-speaker TTS and several techniques such as reduction factor to enforce the robustness of the decoder alignment.Tacotron2 is an encoder-attention-decoder. The encoder is made of three parts in sequence: 1) a word embedding, 2) a convolutional network, and 3) a bi-directional LSTM. The encoded represented is connected to the decoder via a Location Sensitive Attention module. The decoder is comprised of a 2 layer LSTM network, a convolutional postnet, and ...This paper introduces Parallel Tacotron 2, a non-autoregressive neural text-to-speech model with a fully differentiable duration model which does not require supervised duration signals. The duration model is based on a novel attention mechanism and an iterative reconstruction loss based on Soft Dynamic Time Warping, this model can learn token-frame alignments as well as token durations ...Tacotron-2. Tacotron-2 architecture. Image Source. Tacotron is an AI-powered speech synthesis system that can convert text to speech. Tacotron 2’s neural network architecture synthesises speech directly from text. It functions based on the combination of convolutional neural network (CNN) and recurrent neural network (RNN).This paper describes Tacotron 2, a neural network architecture for speech synthesis directly from text. The system is composed of a recurrent sequence-to-sequence feature prediction network that maps character embeddings to mel-scale spectrograms, followed by a modified WaveNet model acting as a vocoder to synthesize timedomain waveforms from ...🤪 TensorFlowTTS provides real-time state-of-the-art speech synthesis architectures such as Tacotron-2, Melgan, Multiband-Melgan, FastSpeech, FastSpeech2 based-on TensorFlow 2. With Tensorflow 2, we can speed-up training/inference progress, optimizer further by using fake-quantize aware and pruning , make TTS models can be run faster than ...The Tacotron 2 and WaveGlow model form a text-to-speech system that enables user to synthesise a natural sounding…TacoTron 2. TACOTRON 2. CookiePPP Tacotron 2 Colabs. This is the main Synthesis Colab. This is the simplified Synthesis Colab. This is supposedly a newer version of the simplified Synthesis Colab. For the sake of completeness, this is the training colabTacotron 2. หลังจากที่ได้รู้จักความเป็นมาของเทคโนโลยี TTS จากในอดีตจนถึงปัจจุบันแล้ว ผมจะแกะกล่องเทคโนโลยีของ Tacotron 2 ให้ดูกัน ซึ่งอย่างที่กล่าวไป ...keonlee9420 / Comprehensive-Tacotron2. Star 37. Code. Issues. Pull requests. PyTorch Implementation of Google's Natural TTS Synthesis by Conditioning WaveNet on Mel Spectrogram Predictions. This implementation supports both single-, multi-speaker TTS and several techniques to enforce the robustness and efficiency of the model. text-to-speech ....