Merge japanese-to-english multilingual branch

.github/workflows/style_check.yml

@@ -69,7 +69,7 @@ jobs:
         working-directory: ${{github.workspace}}
         run: |
           black --check --diff .
-      
+
       - name: Run isort
         shell: bash
         working-directory: ${{github.workspace}}

egs/multi_ja_en/ASR/README.md

@@ -0,0 +1,17 @@
+# Introduction
+
+A bilingual Japanese-English ASR model that utilizes ReazonSpeech, developed by the developers of ReazonSpeech.
+
+**ReazonSpeech** is an open-source dataset that contains a diverse set of natural Japanese speech, collected from terrestrial television streams. It contains more than 35,000 hours of audio.
+
+
+# Included Training Sets
+
+1. LibriSpeech (English)
+2. ReazonSpeech (Japanese)
+
+|Datset| Number of hours| URL|
+|---|---:|---|
+|**TOTAL**|35,960|---|
+|LibriSpeech|960|https://www.openslr.org/12/|
+|ReazonSpeech (all) |35,000|https://huggingface.co/datasets/reazon-research/reazonspeech|

egs/multi_ja_en/ASR/RESULTS.md

@@ -0,0 +1,53 @@
+## Results
+
+### Zipformer
+
+#### Non-streaming
+
+The training command is:
+
+```shell
+./zipformer/train.py \
+  --bilingual 1 \
+  --world-size 4 \
+  --num-epochs 30 \
+  --start-epoch 1 \
+  --use-fp16 1 \
+  --exp-dir zipformer/exp \
+  --max-duration 600
+```
+
+The decoding command is:
+
+```shell
+./zipformer/decode.py \
+    --epoch 28 \
+    --avg 15 \
+    --exp-dir ./zipformer/exp \
+    --max-duration 600 \
+    --decoding-method greedy_search
+```
+
+To export the model with onnx:
+
+```shell
+./zipformer/export-onnx.py   --tokens data/lang_bbpe_2000/tokens.txt   --use-averaged-model 0   --epoch 35   --avg 1   --exp-dir zipformer/exp   --num-encoder-layers "2,2,3,4,3,2"   --downsampling-factor "1,2,4,8,4,2"   --feedforward-dim "512,768,1024,1536,1024,768"   --num-heads "4,4,4,8,4,4"   --encoder-dim "192,256,384,512,384,256"   --query-head-dim 32   --value-head-dim 12   --pos-head-dim 4   --pos-dim 48   --encoder-unmasked-dim "192,192,256,256,256,192"   --cnn-module-kernel "31,31,15,15,15,31"   --decoder-dim 512   --joiner-dim 512   --causal False   --chunk-size "16,32,64,-1"   --left-context-frames "64,128,256,-1"   --fp16 True
+```
+Word Error Rates (WERs) listed below:
+
+|       Datasets       | ReazonSpeech |  ReazonSpeech |     LibriSpeech    |    LibriSpeech    |
+|----------------------|--------------|---------------|--------------------|-------------------|
+|   Zipformer WER (%)  |     dev      |     test      |     test-clean     |    test-other     |
+|     greedy_search    |     5.9      |     4.07      |        3.46        |       8.35        |
+| modified_beam_search |    4.87      |     3.61      |        3.28        |       8.07        |
+|   fast_beam_search   |    41.04     |    36.59      |        16.14       |       22.0        |
+
+
+Character Error Rates (CERs) for Japanese listed below:
+|   Decoding Method    | In-Distribution CER | JSUT | CommonVoice | TEDx  |
+| :------------------: | :-----------------: | :--: | :---------: | :---: | 
+|    greedy search     |        12.56        | 6.93 |    9.75     | 9.67  | 
+| modified beam search |        11.59        | 6.97 |    9.55     | 9.51  | 
+
+Pre-trained model can be found here: https://huggingface.co/reazon-research/reazonspeech-k2-v2-ja-en/tree/main
+

egs/multi_ja_en/ASR/local/compute_fbank_reazonspeech.py

@@ -0,0 +1,146 @@
+#!/usr/bin/env python3
+# Copyright    2023  The University of Electro-Communications  (Author: Teo Wen Shen)  # noqa
+#
+# See ../../../../LICENSE for clarification regarding multiple authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+import argparse
+import logging
+import os
+from pathlib import Path
+from typing import List, Tuple
+
+import torch
+
+# fmt: off
+from lhotse import (  # See the following for why LilcomChunkyWriter is preferred; https://github.com/k2-fsa/icefall/pull/404; https://github.com/lhotse-speech/lhotse/pull/527
+    CutSet,
+    Fbank,
+    FbankConfig,
+    LilcomChunkyWriter,
+    RecordingSet,
+    SupervisionSet,
+)
+
+# fmt: on
+
+# Torch's multithreaded behavior needs to be disabled or
+# it wastes a lot of CPU and slow things down.
+# Do this outside of main() in case it needs to take effect
+# even when we are not invoking the main (e.g. when spawning subprocesses).
+torch.set_num_threads(1)
+torch.set_num_interop_threads(1)
+
+RNG_SEED = 42
+concat_params = {"gap": 1.0, "maxlen": 10.0}
+
+
+def make_cutset_blueprints(
+    manifest_dir: Path,
+) -> List[Tuple[str, CutSet]]:
+    cut_sets = []
+
+    # Create test dataset
+    logging.info("Creating test cuts.")
+    cut_sets.append(
+        (
+            "test",
+            CutSet.from_manifests(
+                recordings=RecordingSet.from_file(
+                    manifest_dir / "reazonspeech_recordings_test.jsonl.gz"
+                ),
+                supervisions=SupervisionSet.from_file(
+                    manifest_dir / "reazonspeech_supervisions_test.jsonl.gz"
+                ),
+            ),
+        )
+    )
+
+    # Create dev dataset
+    logging.info("Creating dev cuts.")
+    cut_sets.append(
+        (
+            "dev",
+            CutSet.from_manifests(
+                recordings=RecordingSet.from_file(
+                    manifest_dir / "reazonspeech_recordings_dev.jsonl.gz"
+                ),
+                supervisions=SupervisionSet.from_file(
+                    manifest_dir / "reazonspeech_supervisions_dev.jsonl.gz"
+                ),
+            ),
+        )
+    )
+
+    # Create train dataset
+    logging.info("Creating train cuts.")
+    cut_sets.append(
+        (
+            "train",
+            CutSet.from_manifests(
+                recordings=RecordingSet.from_file(
+                    manifest_dir / "reazonspeech_recordings_train.jsonl.gz"
+                ),
+                supervisions=SupervisionSet.from_file(
+                    manifest_dir / "reazonspeech_supervisions_train.jsonl.gz"
+                ),
+            ),
+        )
+    )
+    return cut_sets
+
+
+def get_args():
+    parser = argparse.ArgumentParser(
+        formatter_class=argparse.ArgumentDefaultsHelpFormatter,
+    )
+    parser.add_argument("-m", "--manifest-dir", type=Path)
+    return parser.parse_args()
+
+
+def main():
+    args = get_args()
+
+    extractor = Fbank(FbankConfig(num_mel_bins=80))
+    num_jobs = min(16, os.cpu_count())
+
+    formatter = "%(asctime)s %(levelname)s [%(filename)s:%(lineno)d] %(message)s"
+
+    logging.basicConfig(format=formatter, level=logging.INFO)
+
+    if (args.manifest_dir / ".reazonspeech-fbank.done").exists():
+        logging.info(
+            "Previous fbank computed for ReazonSpeech found. "
+            f"Delete {args.manifest_dir / '.reazonspeech-fbank.done'} to allow recomputing fbank."
+        )
+        return
+    else:
+        cut_sets = make_cutset_blueprints(args.manifest_dir)
+        for part, cut_set in cut_sets:
+            logging.info(f"Processing {part}")
+            cut_set = cut_set.compute_and_store_features(
+                extractor=extractor,
+                num_jobs=num_jobs,
+                storage_path=(args.manifest_dir / f"feats_{part}").as_posix(),
+                storage_type=LilcomChunkyWriter,
+            )
+            cut_set.to_file(args.manifest_dir / f"reazonspeech_cuts_{part}.jsonl.gz")
+
+        logging.info("All fbank computed for ReazonSpeech.")
+        (args.manifest_dir / ".reazonspeech-fbank.done").touch()
+
+
+if __name__ == "__main__":
+    main()

egs/multi_ja_en/ASR/local/display_manifest_statistics.py

@@ -0,0 +1,58 @@
+#!/usr/bin/env python3
+# Copyright    2021  Xiaomi Corp.        (authors: Fangjun Kuang)
+#              2022  The University of Electro-Communications (author: Teo Wen Shen)  # noqa
+#
+# See ../../../../LICENSE for clarification regarding multiple authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import argparse
+from pathlib import Path
+
+from lhotse import CutSet, load_manifest
+
+ARGPARSE_DESCRIPTION = """
+This file displays duration statistics of utterances in a manifest.
+You can use the displayed value to choose minimum/maximum duration
+to remove short and long utterances during the training.
+
+See the function `remove_short_and_long_utt()` in
+pruned_transducer_stateless5/train.py for usage.
+"""
+
+
+def get_parser():
+    parser = argparse.ArgumentParser(
+        description=ARGPARSE_DESCRIPTION,
+        formatter_class=argparse.ArgumentDefaultsHelpFormatter,
+    )
+
+    parser.add_argument("--manifest-dir", type=Path, help="Path to cutset manifests")
+
+    return parser.parse_args()
+
+
+def main():
+    args = get_parser()
+
+    for part in ["train", "dev"]:
+        path = args.manifest_dir / f"reazonspeech_cuts_{part}.jsonl.gz"
+        cuts: CutSet = load_manifest(path)
+
+        print("\n---------------------------------\n")
+        print(path.name + ":")
+        cuts.describe()
+
+
+if __name__ == "__main__":
+    main()

egs/multi_ja_en/ASR/local/prepare_char.py

@@ -0,0 +1 @@
+../../../aishell/ASR/local/prepare_char.py

egs/multi_ja_en/ASR/local/prepare_for_bpe_model.py

@@ -0,0 +1,66 @@
+#!/usr/bin/env python3
+# Copyright    2023  Xiaomi Corp.        (authors: Zengrui Jin)
+#
+# See ../../../../LICENSE for clarification regarding multiple authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This script tokenizes the training transcript by CJK characters
+# and saves the result to transcript_chars.txt, which is used
+# to train the BPE model later.
+
+import argparse
+import re
+from pathlib import Path
+
+from tqdm.auto import tqdm
+
+from icefall.utils import tokenize_by_ja_char
+
+
+def get_args():
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        "--lang-dir",
+        type=str,
+        help="""Output directory.
+        The generated transcript_chars.txt is saved to this directory.
+        """,
+    )
+
+    parser.add_argument(
+        "--text",
+        type=str,
+        help="Training transcript.",
+    )
+
+    return parser.parse_args()
+
+
+def main():
+    args = get_args()
+    lang_dir = Path(args.lang_dir)
+    text = Path(args.text)
+
+    assert lang_dir.exists() and text.exists(), f"{lang_dir} or {text} does not exist!"
+
+    transcript_path = lang_dir / "transcript_chars.txt"
+
+    with open(text, "r", encoding="utf-8") as fin:
+        with open(transcript_path, "w+", encoding="utf-8") as fout:
+            for line in tqdm(fin):
+                fout.write(tokenize_by_ja_char(line) + "\n")
+
+
+if __name__ == "__main__":
+    main()

egs/multi_ja_en/ASR/local/prepare_lang.py

@@ -0,0 +1 @@
+../../../librispeech/ASR/local/prepare_lang.py