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audio audioduration (s) 900 900 | onset listlengths 63 233 | offset listlengths 63 233 | cluster listlengths 63 233 | species stringclasses 1
value | sr int64 16k 16k | min_frequency int64 0 0 | spec_time_step float64 0.01 0.01 | min_segment_length float64 0.1 0.1 | tolerance float64 0.2 0.2 | time_per_frame_for_scoring float64 0.01 0.01 | eps float64 0.2 0.2 | seconds dict | recording_id stringlengths 33 33 | duration_seconds float64 900 900 | speech_seconds float64 130 783 | pcm_sha256 stringlengths 64 64 |
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AVA Speech 人工标注训练数据
来源为 MigoXV/vad-human-ava-speech,固定提交 ee5e35d06a268fe051d3cf8c6672c42c05e60887。保留全部 160 条录音、原 11 个标注字段及原始 FLAC 字节;不裁剪、不重采样、不重标注。每条原 train 录音 900 秒,原 test 录音 300 秒。16kHz、单声道、PCM16,无损 FLAC,音频与标签内嵌 Parquet。
划分与时长
| 划分 | 原录音数 | 总时长(小时) | 有效语音(小时) | 非语音(小时) |
|---|---|---|---|---|
| train | 142 | 35.500000 | 18.670808 | 16.829192 |
| validation | 16 | 4.000000 | 2.027214 | 1.972786 |
| test | 2 | 0.166667 | 0.089531 | 0.077136 |
全量共 39 小时 40 分钟。有效语音 20.787553 小时(52.405595%),非语音 18.879114 小时(47.594405%)。按区间并集统计,完整数字及逐录音 PCM 哈希见 provenance.json。原 test 两条录音保持原划分;原 train 中按 sha256(ava-validation-v1:audio.path) 排序,前 16 条作 validation,其余 142 条作 train。录音间无泄漏,选择验证集不依赖标签。
训练契约
audio 是 Hugging Face Audio;seconds.starts 是原 onset 秒数,seconds.durations 是 offset-onset 秒数。原 onset/offset/cluster 等 11 个字段仍保留,新增 recording_id、duration_seconds、speech_seconds 和 pcm_sha256。训练读取只用 datasets.load_dataset;不得将原标注格式误认为训练字段。
from datasets import load_dataset, Audio
data = load_dataset('MigoXV/vad-human-ava-speech-training')
raw = data.cast_column('audio', Audio(sampling_rate=16000, decode=False))
# raw['train'][0]['audio']['bytes'] 为完整 FLAC;使用 soundfile 解码。
可复现与使用边界
固定转换实现见仓库 tools/prepare_ava.py。转换校验采样率、通道、编码、时间边界和完整长度,计算每条 PCM SHA256。数据适配 preludio2 AttetionVadDataModule 的三个 split,全部采用人工原标签。验证集用于选权重与阈值,测试集只能作独立最终评估;执行成功不代表达到生产精度。来源镜像声明 Apache-2.0,电影音视频的第三方权利不因重新封装改变。
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