|
|
| |
| import json |
| import wave |
| from pathlib import Path |
|
|
| import numpy as np |
| import pandas as pd |
|
|
|
|
| ROOT = Path(__file__).resolve().parent.parent |
| CONVERT_TASKS = {"GWOSC", "LEAVES", "Iquique", "Llaima", "RadSeg", "RadioML"} |
|
|
|
|
| def main(): |
| total = converted = 0 |
|
|
| with (ROOT / "meta_data.jsonl").open("r", encoding="utf-8") as fin, \ |
| (ROOT / "wav_data.jsonl").open("w", encoding="utf-8") as fout: |
| for line in fin: |
| if not line.strip(): |
| continue |
| data = json.loads(line) |
|
|
| if data["task_name"] in CONVERT_TASKS: |
| data_type = data["data_type"] |
| assert data_type in ("csv", "npy") |
|
|
| src_rel = Path(data["input_ts"]["path"]) |
| src_path = ROOT / src_rel |
| assert src_rel.parent.name == "raw_input" and src_path.is_file() |
|
|
| if data_type == "csv": |
| signal = pd.read_csv(src_path, header=None).values |
| else: |
| signal = np.load(src_path) |
|
|
| signal = signal.flatten().astype(np.float64) |
| assert signal.size > 0 |
| abs_max = np.max(np.abs(signal)) |
| if abs_max > 0: |
| signal = signal / abs_max |
| signal = (signal * 32767).astype(np.int16) |
|
|
| wav_rel = src_rel.parent.parent / "wav_input" / (src_rel.stem + ".wav") |
| wav_path = ROOT / wav_rel |
| wav_path.parent.mkdir(parents=True, exist_ok=True) |
|
|
| with wave.open(str(wav_path), "wb") as wf: |
| wf.setnchannels(1) |
| wf.setsampwidth(2) |
| wf.setframerate(16000) |
| wf.writeframes(signal.tobytes()) |
|
|
| data["data_type"] = "wav" |
| data["input_ts"]["path"] = wav_rel.as_posix() |
| data["input_ts"]["length"] = int(signal.size) |
| data["input_ts"]["num_channel"] = 1 |
| data["input_ts"]["fs"] = 16000 |
|
|
| if data["task_name"] in ("Iquique", "RadSeg", "RadioML"): |
| data["input_ts"]["channel_detail"] = [] |
|
|
| converted += 1 |
|
|
| fout.write(json.dumps(data, ensure_ascii=False) + "\n") |
| total += 1 |
|
|
| assert total == 6128 and converted == 3428 |
| print(f"Done: {converted} WAV files, {total} JSONL records") |
|
|
|
|
| if __name__ == "__main__": |
| main() |
|
|
