Spear-TTS - Pytorch

Implementation of Spear-TTS - multi-speaker text-to-speech attention network, in Pytorch

The text-to-semantic module built here will be used for SoundStorm for conditioning.

Appreciation

• Stability for their generous sponsorships to work on and open source cutting edge artificial intelligence research

• Lucas Newman for completing the backtranslation portion, as well as beam search decoding!

• Lucas Newman for completing the final text to semantic transformer training code!

Install

$ pip install spear-tts-pytorch

Usage

import torch

from audiolm_pytorch import HubertWithKmeans

from spear_tts_pytorch import (
    TextToSemantic,
    SemanticToTextDatasetGenerator,
    GeneratedAudioTextDataset,
    MockDataset
)

wav2vec = HubertWithKmeans(
    checkpoint_path = './hubert_base_ls960.pt',
    kmeans_path = './hubert_base_ls960_L9_km500.bin'
)

model = TextToSemantic(
    wav2vec = wav2vec,
    dim = 512,
    num_text_token_ids = 256,
    heads = 8,
    target_kv_heads = 2, # grouped query attention, for memory efficient decoding
    source_depth = 1,
    target_depth = 1
)

ds = MockDataset(10)

dataset_generator = SemanticToTextDatasetGenerator(
    model = model,
    dataset = ds,
    folder = './output_folder'
)

dataset_generator(max_length = 2)

generated_dataset = GeneratedAudioTextDataset(
    folder = './output_folder'
)

assert len(generated_dataset) == 10

Todo

• [x] add eos logic + generate, and hook up end-to-end generation in soundstorm

• [x] add first pretraining speech-to-speech with the reconstruction of 60% deleted tokens

• [x] add dropouts for this project, as low-resource

• [x] add total flexiblity of which layers of encoder / decoder to freeze during training

• [x] add step for training on small speech -> text corpus and generating pseudo-labelled dataset + finetuning (thanks to @lucasnewman)

• [x] add final step of finetuning on text -> speech + pseudolabelled dataset

• [x] figure out the best way to store and manage the pseudo-labelled generated dataset

• [x] batched beam search decoding

• [x] allow for using rotary positions in decoder + flash attention, give Tri another citation

• [x] integrate speculative decoding with some improvisation - done in same model using early exit strategy

• [ ] add cached key / values for starter + single / grouped key values, make sure flash attention can support specialized causal mask before flash attention 2 is in pytorch core

• [ ] polish the audio-text generation workflow

• [ ] concatting the real audio-text dataset with the generated one -> or being able to convert real audio-text dataset to generated

Citations

@misc{kharitonov2023speak,
    title   = {Speak, Read and Prompt: High-Fidelity Text-to-Speech with Minimal Supervision}, 
    author  = {Eugene Kharitonov and Damien Vincent and Zalán Borsos and Raphaël Marinier and Sertan Girgin and Olivier Pietquin and Matt Sharifi and Marco Tagliasacchi and Neil Zeghidour},
    year    = {2023},
    eprint  = {2302.03540},
    archivePrefix = {arXiv},
    primaryClass = {cs.SD}
}

@inproceedings{dao2022flashattention,
    title   = {Flash{A}ttention: Fast and Memory-Efficient Exact Attention with {IO}-Awareness},
    author  = {Dao, Tri and Fu, Daniel Y. and Ermon, Stefano and Rudra, Atri and R{\'e}, Christopher},
    booktitle = {Advances in Neural Information Processing Systems},
    year    = {2022}
}

@misc{shi2023enhance,
    title   = {Enhance audio generation controllability through representation similarity regularization}, 
    author  = {Yangyang Shi and Gael Le Lan and Varun Nagaraja and Zhaoheng Ni and Xinhao Mei and Ernie Chang and Forrest Iandola and Yang Liu and Vikas Chandra},
    year    = {2023},
    eprint  = {2309.08773},
    archivePrefix = {arXiv},
    primaryClass = {cs.SD}
}

@article{Ainslie2023GQATG,
    title   = {GQA: Training Generalized Multi-Query Transformer Models from Multi-Head Checkpoints},
    author  = {Joshua Ainslie and James Lee-Thorp and Michiel de Jong and Yury Zemlyanskiy and Federico Lebr'on and Sumit K. Sanghai},
    journal = {ArXiv},
    year    = {2023},
    volume  = {abs/2305.13245},
    url     = {https://api.semanticscholar.org/CorpusID:258833177}
}

@inproceedings{Leviathan2022FastIF,
    title   = {Fast Inference from Transformers via Speculative Decoding},
    author  = {Yaniv Leviathan and Matan Kalman and Y. Matias},
    booktitle = {International Conference on Machine Learning},
    year    = {2022},
    url     = {https://api.semanticscholar.org/CorpusID:254096365}
}