第二批反馈：引擎改造(限幅/SoundTouch不变调变速/长按快进/跳句/iOS闪光降级) + 6游戏状态BGM与试玩测试全绿
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SoundGame Dev
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#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""爆音修复（R6）：处理 scan_clicks.py 标记的 sfx/bgm 资产。
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修复策略（只修 sfx/bgm，voice 不动）：
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- one-shot sfx：去直流（逐声道减均值）→ 首尾 8ms cos² 淡入淡出 → 峰值归一 -3dBFS
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- loop（bgm/ 与 sfx/amb_*）：只去直流（首尾交叉淡化工艺保证边界连续，加淡入淡出会破坏循环）
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- rpg one-shot 优先从 staging（tools/gen_rpg_sfx_wav/ 原始 SA3 wav / gen_rpg_syn.py 重出的
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/tmp/rpg_syn）重做，避免二次有损编码；其余从现有 ogg 解码修复。
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处理前原件备份到 tools/asset_fix_backup/。处理前后指标记录到 /tmp/fix_report.jsonl。
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"""
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import json
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import os
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import shutil
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import subprocess
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import sys
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import numpy as np
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import soundfile as sf
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ROOT = "/home/ubuntu/SoundGame"
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WEB = os.path.join(ROOT, "web")
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BACKUP = os.path.join(ROOT, "tools", "asset_fix_backup")
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FADE_MS = 8
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PEAK_TARGET = 10 ** (-3.0 / 20) # -3dBFS
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RPG_SA3 = os.path.join(ROOT, "tools", "gen_rpg_sfx_wav")
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RPG_SYN = "/tmp/rpg_syn"
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# rpg one-shot 的定长裁剪参数（同 R4 工艺）
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RPG_TRIM = {
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"tel_wolf": 1.0, "tel_bandit": 1.0, "tel_spider": 1.0, "tel_elite": 1.0,
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"tel_boss1": 1.0, "tel_croc": 1.0, "tel_shaman": 1.0, "tel_puppet": 1.0,
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"tel_boss2": 1.0, "atk_swing": 0.5, "atk_hit": 0.4, "parry": 0.5,
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"skill_slash": 0.8, "enemy_die": 1.0, "potion": 1.2, "chest": 1.5,
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"drink_water": 1.5, "rest": 2.0, "door_heavy": 3.0,
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}
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def is_loop(rel):
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return "/bgm/" in "/" + rel or os.path.basename(rel).startswith("amb_")
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def metrics(y, sr):
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mono = y.mean(axis=1) if y.ndim > 1 else y
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n5 = max(1, int(sr * 5 / 1000))
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peak = float(np.max(np.abs(mono)))
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return {
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"peak_db": round(20 * np.log10(max(peak, 1e-9)), 2),
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"dc": round(float(np.mean(mono)), 5),
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"head5ms_db": round(20 * np.log10(max(float(np.max(np.abs(mono[:n5]))), 1e-9)), 2),
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"tail5ms_db": round(20 * np.log10(max(float(np.max(np.abs(mono[-n5:]))), 1e-9)), 2),
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}
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def fix_array(y, sr, loop):
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y = y.astype(np.float64)
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if not loop:
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n = int(sr * FADE_MS / 1000)
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ramp = np.sin(np.linspace(0, np.pi / 2, n)) ** 2
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y[:n] *= ramp[:, None] if y.ndim > 1 else ramp
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y[-n:] *= ramp[::-1][:, None] if y.ndim > 1 else ramp[::-1]
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# 峰值归一 -3dBFS
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peak = np.max(np.abs(y))
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if peak > 0:
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y = y / peak * PEAK_TARGET
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# 去直流放最后（淡入淡出/归一会重新引入微小偏置；常数平移不影响循环连续性）
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y = y - y.mean(axis=0)
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return y.astype(np.float32)
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def encode(wav_path, base):
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"""编码 ogg+m4a；对 ogg 做解码回读真峰值校验——MDCT 重建对高密度/近 Nyquist
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内容会过冲数 dB（R6 爆音根因），过冲则按实测降增益重编（最多 3 次迭代，
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首轮附带 18kHz 低通消振铃）。返回解码后实测峰值 dB。"""
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subprocess.run(["ffmpeg", "-y", "-v", "error", "-i", wav_path, "-ar", "44100",
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"-c:a", "aac", "-b:a", "128k", base + ".m4a"], check=True)
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cur = wav_path
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peak_db = None
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for attempt in range(3):
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subprocess.run(["ffmpeg", "-y", "-v", "error", "-i", cur, "-ar", "44100",
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"-c:a", "libvorbis", "-q:a", "3", base + ".ogg"], check=True)
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dec, _sr = sf.read(base + ".ogg", always_2d=True)
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peak_db = 20 * np.log10(max(float(np.max(np.abs(dec))), 1e-9))
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if peak_db <= -2.7:
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break
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gain_db = -3.2 - peak_db
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nxt = wav_path + f".tp{attempt}.wav"
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af = ("lowpass=f=18000," if attempt == 0 else "") + f"volume={gain_db:.2f}dB"
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subprocess.run(["ffmpeg", "-y", "-v", "error", "-i", cur,
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"-af", af, "-c:a", "pcm_f32le", nxt], check=True)
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cur = nxt
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return peak_db
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def main():
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flagged = []
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for line in open("/tmp/scan_all.jsonl"):
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r = json.loads(line)
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if "/voice/" in r["path"]:
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continue # 语音响度策略不动
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if r["hot_peak"] or r["dc_bad"] or ((r["click_head"] or r["click_tail"]) and not r["loop"]):
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flagged.append(r["path"])
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print(f"flagged sfx/bgm: {len(flagged)}")
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report = []
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for rel in flagged:
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game = rel.split("/")[0]
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name = os.path.basename(rel)[:-4]
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ogg = os.path.join(WEB, rel)
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base = ogg[:-4]
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loop = is_loop(rel)
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# 选源：rpg one-shot 用 staging 重做；其余用现有 ogg
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src = None
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trim = None
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if game == "rpg" and not loop:
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if name in RPG_TRIM and os.path.exists(os.path.join(RPG_SA3, name + ".wav")):
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src, trim = os.path.join(RPG_SA3, name + ".wav"), RPG_TRIM[name]
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elif os.path.exists(os.path.join(RPG_SYN, name + ".wav")):
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src = os.path.join(RPG_SYN, name + ".wav")
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if src:
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y, sr = sf.read(src, always_2d=True)
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y = y.astype(np.float64)
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if trim: # 去头静音 + 定长（ffmpeg silenceremove 的 python 等价：阈值 -45dB）
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mono = np.abs(y.mean(axis=1))
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win = int(sr * 0.005)
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env = np.convolve(mono, np.ones(win) / win, mode="same")
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start = int(np.argmax(env > 10 ** (-45 / 20)))
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y = y[start:start + int(sr * trim)]
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else:
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# 有备份读备份（初代无损源），避免多次有损转码
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bak = os.path.join(BACKUP, rel)
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y, sr = sf.read(bak if os.path.exists(bak) else ogg, always_2d=True)
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before = metrics(y, sr)
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# 备份原件（ogg+m4a）
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for ext in (".ogg", ".m4a"):
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dst = os.path.join(BACKUP, rel[:-4] + ext)
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os.makedirs(os.path.dirname(dst), exist_ok=True)
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if os.path.exists(base + ext):
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shutil.copy2(base + ext, dst)
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y2 = fix_array(y, sr, loop)
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after = metrics(y2, sr)
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tmp = f"/tmp/fix_{game}_{name}.wav"
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sf.write(tmp, y2, sr)
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dec_peak = encode(tmp, base) # ogg 解码回读真峰值（含过冲迭代修正）
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after["decoded_peak_db"] = round(dec_peak, 2)
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report.append({"path": rel, "loop": loop, "src": "staging" if src else "ogg",
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"before": before, "after": after})
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print(f"[fix] {rel} ({'loop' if loop else 'shot'}, src={'staging' if src else 'ogg'}) "
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f"peak {before['peak_db']}→{after['peak_db']} (decoded {round(dec_peak, 2)}) "
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f"dc {before['dc']}→{after['dc']} head {before['head5ms_db']}→{after['head5ms_db']}")
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with open("/tmp/fix_report.jsonl", "w") as f:
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for r in report:
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f.write(json.dumps(r, ensure_ascii=False) + "\n")
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print(f"fixed {len(report)} files, backup in {BACKUP}")
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if __name__ == "__main__":
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main()
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