SoundGame Dev
cc0f8c008d
- 新增 web/ 纯音频 HTML5 平台：共享引擎（手势/WebAudio 三层/设置/震动）、 Node 零依赖服务器（静态 + 注册登录 + 进度存档 API） - 游戏：剑与声(RPG 新作)、声命线、暗室(重设计)、音序回响(重设计)、 节拍行者(跟随领奏重构)、盲航(同向闪避重构)；声东击西删除 - 全局功能：男声/女声双套 TTS 资产、三档语速、BGM 音量三档、 震动反馈语言(10 种震型)、服务器进度同步 - 资产：899 ogg + 899 m4a（Qwen3-TTS 双性别语音、Stable Audio 3 音效、 Mureka BGM 4+3 首），终检零缺失 - 文档：docs/design/ 13 篇设计审查文档、docs/audio/ 资产管线、 web/server/README.md API 文档
46 lines
1.4 KiB
Python
46 lines
1.4 KiB
Python
#!/usr/bin/env python3
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"""实测音频 BPM 并找出首个强拍起点（librosa）。
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用法: .venv-tts/bin/python tools/bpm_check.py <audio> <target_bpm>
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输出 JSON: {"measured_bpm": ..., "octave_ok": bool, "first_beat_sec": ..., "n_beats": ...}
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octave_ok: 实测值与目标偏差 <=2%（含半速/倍速的节拍八度等价）。
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"""
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import json
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import sys
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import librosa
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import numpy as np
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path, target = sys.argv[1], float(sys.argv[2])
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y, sr = librosa.load(path, sr=22050, mono=True)
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onset = librosa.onset.onset_strength(y=y, sr=sr)
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tempo, beats = librosa.beat.beat_track(y=y, sr=sr, onset_envelope=onset, start_bpm=target)
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tempo = float(np.atleast_1d(tempo)[0])
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def dev(a, b):
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return abs(a - b) / b
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ok = any(dev(tempo, target * k) <= 0.02 for k in (0.5, 1.0, 2.0))
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beat_times = librosa.frames_to_time(beats, sr=sr)
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first_beat = 0.0
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if len(beat_times):
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# 第一个 onset 强度足够高的拍（跳过 intro 弱起）
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thresh = 0.4 * float(np.max(onset))
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for bf, bt in zip(beats, beat_times):
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if bf < len(onset) and onset[bf] >= thresh:
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first_beat = float(bt)
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break
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else:
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first_beat = float(beat_times[0])
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print(json.dumps({
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"file": path,
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"measured_bpm": round(tempo, 2),
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"target": target,
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"deviation_pct": round(dev(tempo, target) * 100, 2),
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"octave_ok": ok,
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"first_beat_sec": round(first_beat, 3),
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"n_beats": int(len(beats)),
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}))
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