chore: import upstream snapshot with attribution

tools/speech_data_simulator/multispeaker_simulator.py

@@ -0,0 +1,53 @@
+# Copyright (c) 2022, NVIDIA CORPORATION.  All rights reserved.
+#
+# 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.
+
+from multiprocessing import set_start_method
+
+from nemo.collections.asr.data.data_simulation import MultiSpeakerSimulator, RIRMultiSpeakerSimulator
+from nemo.core.config import hydra_runner
+
+
+"""
+This script creates a synthetic diarization session using the provided audio dataset with ctm files.
+Usage:
+  python <NEMO_ROOT>/tools/speech_data_simulator/multispeaker_simulator.py  \
+    num_workers=10 \
+    data_simulator.random_seed=42 \
+    data_simulator.manifest_filepath=manifest_with_alignment_file.json \
+    data_simulator.outputs.output_dir=./simulated_data \
+    data_simulator.outputs.output_filename=sim_spk2_sess20 \
+    data_simulator.session_config.num_sessions=1000 \
+    data_simulator.session_config.num_speakers=2 \
+    data_simulator.session_config.session_length=20 \
+    data_simulator.background_noise.add_bg=False \
+    data_simulator.background_noise.background_manifest=background_noise.json \
+    data_simulator.background_noise.snr=40 \
+
+Check out parameters in ./conf/data_simulator.yaml.
+"""
+
+
+@hydra_runner(config_path="conf", config_name="data_simulator.yaml")
+def main(cfg):
+    if cfg.data_simulator.rir_generation.use_rir:
+        simulator = RIRMultiSpeakerSimulator(cfg=cfg)
+    else:
+        simulator = MultiSpeakerSimulator(cfg=cfg)
+
+    set_start_method('spawn', force=True)
+    simulator.generate_sessions()
+
+
+if __name__ == "__main__":
+    main()