VoiceCraft/inference_tts.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "VoiceCraft Inference Text To Speech Demo\n",
    "==="
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Select 'voicecraft' as the kernel"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "# import libs\n",
    "# if this throws an error, something went wrong installing dependencies or changing the kernel above!\n",
    "import os\n",
    "os.environ[\"CUDA_DEVICE_ORDER\"]=\"PCI_BUS_ID\"   \n",
    "os.environ[\"CUDA_VISIBLE_DEVICES\"]=\"0\"\n",
    "os.environ[\"USER\"] = \"YOUR_USERNAME\" # TODO change this to your username\n",
    "\n",
    "import torch\n",
    "import torchaudio\n",
    "import numpy as np\n",
    "import random\n",
    "\n",
    "from data.tokenizer import (\n",
    "    AudioTokenizer,\n",
    "    TextTokenizer,\n",
    ")\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "# install MFA models and dictionaries if you haven't done so already\n",
    "!source ~/.bashrc && \\\n",
    "    conda activate voicecraft && \\\n",
    "    mfa model download dictionary english_us_arpa && \\\n",
    "    mfa model download acoustic english_us_arpa"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "# load model, encodec, and phn2num\n",
    "# # load model, tokenizer, and other necessary files\n",
    "device = \"cuda\" if torch.cuda.is_available() else \"cpu\"\n",
    "from models import voicecraft\n",
    "#import models.voicecraft as voicecraft\n",
    "voicecraft_name=\"gigaHalfLibri330M_TTSEnhanced_max16s.pth\" # or giga330M.pth, giga830M.pth\n",
    "ckpt_fn =f\"./pretrained_models/{voicecraft_name}\"\n",
    "encodec_fn = \"./pretrained_models/encodec_4cb2048_giga.th\"\n",
    "if not os.path.exists(ckpt_fn):\n",
    "    os.system(f\"wget https://huggingface.co/pyp1/VoiceCraft/resolve/main/{voicecraft_name}\\?download\\=true\")\n",
    "    os.system(f\"mv {voicecraft_name}\\?download\\=true ./pretrained_models/{voicecraft_name}\")\n",
    "if not os.path.exists(encodec_fn):\n",
    "    os.system(f\"wget https://huggingface.co/pyp1/VoiceCraft/resolve/main/encodec_4cb2048_giga.th\")\n",
    "    os.system(f\"mv encodec_4cb2048_giga.th ./pretrained_models/encodec_4cb2048_giga.th\")\n",
    "\n",
    "ckpt = torch.load(ckpt_fn, map_location=\"cpu\")\n",
    "model = voicecraft.VoiceCraft(ckpt[\"config\"])\n",
    "model.load_state_dict(ckpt[\"model\"])\n",
    "model.to(device)\n",
    "model.eval()\n",
    "\n",
    "phn2num = ckpt['phn2num']\n",
    "\n",
    "text_tokenizer = TextTokenizer(backend=\"espeak\")\n",
    "audio_tokenizer = AudioTokenizer(signature=encodec_fn, device=device) # will also put the neural codec model on gpu\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "# Prepare your audio\n",
    "# point to the original audio whose speech you want to clone\n",
    "# write down the transcript for the file, or run whisper to get the transcript (and you can modify it if it's not accurate), save it as a .txt file\n",
    "orig_audio = \"./demo/84_121550_000074_000000.wav\"\n",
    "orig_transcript = \"But when I had approached so near to them The common object, which the sense deceives, Lost not by distance any of its marks,\"\n",
    "\n",
    "# move the audio and transcript to temp folder\n",
    "temp_folder = \"./demo/temp\"\n",
    "os.makedirs(temp_folder, exist_ok=True)\n",
    "os.system(f\"cp {orig_audio} {temp_folder}\")\n",
    "filename = os.path.splitext(orig_audio.split(\"/\")[-1])[0]\n",
    "with open(f\"{temp_folder}/{filename}.txt\", \"w\") as f:\n",
    "    f.write(orig_transcript)\n",
    "# run MFA to get the alignment\n",
    "align_temp = f\"{temp_folder}/mfa_alignments\"\n",
    "!source ~/.bashrc && \\\n",
    "    conda activate voicecraft && \\\n",
    "    mfa align -v --clean -j 1 --output_format csv {temp_folder} \\\n",
    "        english_us_arpa english_us_arpa {align_temp}\n",
    "\n",
    "# # if the above fails, it could be because the audio is too hard for the alignment model, increasing the beam size usually solves the issue\n",
    "# !source ~/.bashrc && \\\n",
    "#     conda activate voicecraft && \\\n",
    "#     mfa align -v --clean -j 1 --output_format csv {temp_folder} \\\n",
    "#         english_us_arpa english_us_arpa {align_temp} --beam 1000 --retry_beam 2000\n",
    "\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "# take a look at demo/temp/mfa_alignment, decide which part of the audio to use as prompt\n",
    "cut_off_sec = 3.01 # NOTE: according to forced-alignment file demo/temp/mfa_alignments/84_121550_000074_000000.csv, the word \"common\" stop as 3.01 sec, this should be different for different audio\n",
    "target_transcript = \"But when I had approached so near to them The common I cannot believe that the same model can also do text to speech synthesis as well!\"\n",
    "# NOTE: 3 sec of reference is generally enough for high quality voice cloning, but longer is generally better, try e.g. 3~6 sec.\n",
    "audio_fn = f\"{temp_folder}/{filename}.wav\"\n",
    "info = torchaudio.info(audio_fn)\n",
    "audio_dur = info.num_frames / info.sample_rate\n",
    "\n",
    "assert cut_off_sec < audio_dur, f\"cut_off_sec {cut_off_sec} is larger than the audio duration {audio_dur}\"\n",
    "prompt_end_frame = int(cut_off_sec * info.sample_rate)\n",
    "\n",
    "# run the model to get the output\n",
    "# hyperparameters for inference\n",
    "codec_audio_sr = 16000\n",
    "codec_sr = 50\n",
    "top_k = 0\n",
    "top_p = 0.9 # can also try 0.8, but 0.9 seems to work better\n",
    "temperature = 1\n",
    "silence_tokens=[1388,1898,131]\n",
    "kvcache = 1 # NOTE if OOM, change this to 0, or try the 330M model\n",
    "\n",
    "# NOTE adjust the below three arguments if the generation is not as good\n",
    "stop_repetition = 3 # NOTE if the model generate long silence, reduce the stop_repetition to 3, 2 or even 1\n",
    "sample_batch_size = 2 # for gigaHalfLibri330M_TTSEnhanced_max16s.pth, 1 or 2 should be fine since the model is trained to do TTS, for the other two models, might need a higher number. NOTE: if the if there are long silence or unnaturally strecthed words, increase sample_batch_size to 5 or higher. What this will do to the model is that the model will run sample_batch_size examples of the same audio, and pick the one that's the shortest. So if the speech rate of the generated is too fast change it to a smaller number.\n",
    "seed = 1 # change seed if you are still unhappy with the result\n",
    "\n",
    "def seed_everything(seed):\n",
    "    os.environ['PYTHONHASHSEED'] = str(seed)\n",
    "    random.seed(seed)\n",
    "    np.random.seed(seed)\n",
    "    torch.manual_seed(seed)\n",
    "    torch.cuda.manual_seed(seed)\n",
    "    torch.backends.cudnn.benchmark = False\n",
    "    torch.backends.cudnn.deterministic = True\n",
    "seed_everything(seed)\n",
    "\n",
    "decode_config = {'top_k': top_k, 'top_p': top_p, 'temperature': temperature, 'stop_repetition': stop_repetition, 'kvcache': kvcache, \"codec_audio_sr\": codec_audio_sr, \"codec_sr\": codec_sr, \"silence_tokens\": silence_tokens, \"sample_batch_size\": sample_batch_size}\n",
    "from inference_tts_scale import inference_one_sample\n",
    "concated_audio, gen_audio = inference_one_sample(model, ckpt[\"config\"], phn2num, text_tokenizer, audio_tokenizer, audio_fn, target_transcript, device, decode_config, prompt_end_frame)\n",
    "        \n",
    "# save segments for comparison\n",
    "concated_audio, gen_audio = concated_audio[0].cpu(), gen_audio[0].cpu()\n",
    "# logging.info(f\"length of the resynthesize orig audio: {orig_audio.shape}\")\n",
    "\n",
    "\n",
    "# display the audio\n",
    "from IPython.display import Audio\n",
    "print(\"concatenate prompt and generated:\")\n",
    "display(Audio(concated_audio, rate=codec_audio_sr))\n",
    "\n",
    "print(\"generated:\")\n",
    "display(Audio(gen_audio, rate=codec_audio_sr))\n",
    "\n",
    "# # save the audio\n",
    "# # output_dir\n",
    "# output_dir = \"/home/pyp/VoiceCraft/demo/generated_tts\"\n",
    "# os.makedirs(output_dir, exist_ok=True)\n",
    "# seg_save_fn_gen = f\"{output_dir}/{os.path.basename(audio_fn)[:-4]}_gen_seed{seed}.wav\"\n",
    "# seg_save_fn_concat = f\"{output_dir}/{os.path.basename(audio_fn)[:-4]}_concat_seed{seed}.wav\"        \n",
    "\n",
    "# torchaudio.save(seg_save_fn_gen, gen_audio, codec_audio_sr)\n",
    "# torchaudio.save(seg_save_fn_concat, concated_audio, codec_audio_sr)\n",
    "\n",
    "# you are might get warnings like WARNING:phonemizer:words count mismatch on 300.0% of the lines (3/1), this can be safely ignored"
   ]
  }
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