feat(rhythm): 鼓手模式重构——屏幕六区鼓组 + 无鼓伴奏合拍（用户裁定重构）
- 屏幕3列×2行六区鼓组（列=声像左中右/行=音高上亮下沉），六件程序合成打击乐，三重冗余蒙眼可辨
- 无鼓伴奏BGM上跟随领奏 call&response + 加花句；3曲90/105/120 BPM解锁制，BPM实测89.99/105.00/120.01
- 引擎后向兼容扩展：onGesture补{x,y}坐标（单参回调零感知，15游戏+3引擎测试全量回归零失败）
- 判定简化：全部音符=分区点按零延迟，旧双击补偿/下滑折中退役；键盘Digit1-6+空格=家区
- 教学摸鼓认区（摸哪报哪，8s无触摸自动进阶）+重教≤2+降速DDA+归因真话律
- 保留旧作好评：跟随领奏核心/S~C评级/解锁制/判定口径/guide工程遗产
- 语音49id双性别+8key；R1+R2连续2轮4/4愿意玩P0=0裁定可交付；live直证33 Perfect dt≈0.00s
- 03号文档仅文末加取代指针；新设计24号；档案research/rhythm-drummer/；Mureka累计$1.35
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#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""《节拍行者》鼓手模式程序合成打击乐（24-rhythm-drummer.md §9.1，7 件 SYN）。
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六区鼓组 + Perfect accent：kick/snare/hat/tomhi/crash/tomlo/accent。
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落盘：staging wav → tools/gen_rhythm_syn_wav/<id>.wav（44.1kHz 立体声）；
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成品 → web/rhythm/audio/sfx/<id>.{ogg,m4a}（tools/bin/ffmpeg 双格式）。
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QC（gen_cipher_syn.py 同款）：去直流 + 首尾 8ms cos² 淡化 + 编码后解码回读
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真峰值 ≤ -3dBFS（MDCT 过冲坑：ebur128 peak=true 实测，超限自动降档重编）。
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打击乐起音必须硬（盲玩靠起音对拍）；包络用 (1-exp(-t*k)) 快起沿。
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用法：.venv-tts/bin/python tools/gen_rhythm_syn.py
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"""
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import os
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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 = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
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FFMPEG = os.path.join(ROOT, "tools", "bin", "ffmpeg")
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OUT = os.path.join(ROOT, "tools", "gen_rhythm_syn_wav")
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DST = os.path.join(ROOT, "web", "rhythm", "audio", "sfx")
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os.makedirs(OUT, exist_ok=True)
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os.makedirs(DST, exist_ok=True)
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sr = 44100
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ONE_SHOT_TP_CEIL = -3.0 # dBFS
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SAMPLE_PEAK = 0.66 # ≈ -3.6dBFS，给 MDCT 过冲留余量
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FADE_N = int(sr * 0.008)
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_rng = np.random.default_rng(20260914)
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def dc(y):
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return y - np.mean(y)
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def fade(y):
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w = np.sin(np.linspace(0, np.pi / 2, FADE_N)) ** 2
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y = y.copy()
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y[:FADE_N] *= w
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y[-FADE_N:] *= w[::-1]
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return y
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def norm(y, peak=SAMPLE_PEAK):
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m = np.max(np.abs(y))
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return (y / m * peak) if m > 0 else y
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def stereo(y):
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return np.stack([y, y], axis=1).astype(np.float32)
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def bp_noise(n, lo, hi):
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x = _rng.standard_normal(n)
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X = np.fft.rfft(x)
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freqs = np.fft.rfftfreq(n, 1 / sr)
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mask = ((freqs >= lo) & (freqs <= hi)).astype(float)
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y = np.fft.irfft(X * mask, n)
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return y / (np.max(np.abs(y)) + 1e-9)
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def sweep(n, f0, f1, dec):
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"""指数扫频正弦（鼓皮），dec = 幅度衰减系数（1/s）。"""
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t = np.arange(n) / sr
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k = np.log(f1 / f0) / (n / sr)
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ph = 2 * np.pi * f0 * (np.exp(k * t) - 1) / k
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return np.sin(ph) * np.exp(-t * dec)
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# ---------------------------------------------------------------- 鼓件渲染
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def r_kick(): # 底鼓 BC：130→45Hz 扫频 + 触击瞬态（起沿 <3ms）；id 沿用 inst_kick
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n = int(sr * 0.28)
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t = np.arange(n) / sr
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y = sweep(n, 130, 45, 16) * 1.0
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click = bp_noise(n, 1500, 6000) * np.exp(-t * 220) * 0.5 # 槌击瞬态
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th = np.sin(2 * np.pi * 60 * t) * np.exp(-t * 22) * 0.35 # 低频胸口感
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return dc((y + click + th) * (1 - np.exp(-t * 900)))
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def r_snare(): # 军鼓 BL：200Hz 皮 + 1-4kHz 带通沙噪 + 钢丝噪
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n = int(sr * 0.22)
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t = np.arange(n) / sr
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head = np.sin(2 * np.pi * 196 * t) * np.exp(-t * 38) * 0.8
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wires = bp_noise(n, 3000, 7000) * np.exp(-t * 55) * 0.55
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body = bp_noise(n, 800, 3000) * np.exp(-t * 30) * 0.7
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return dc((head + wires + body) * (1 - np.exp(-t * 1200)))
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def r_hat(): # 闭合踩镲 TL：6-10kHz 高通金属噪，60ms 急收
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n = int(sr * 0.07)
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t = np.arange(n) / sr
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y = bp_noise(n, 6000, 12000) * np.exp(-t * 90)
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y += bp_noise(n, 9000, 14000) * np.exp(-t * 140) * 0.6
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metallic = (np.sin(2 * np.pi * 11200 * t) * 0.25
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+ np.sin(2 * np.pi * 8350 * t) * 0.18) * np.exp(-t * 110)
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return dc((y + metallic) * (1 - np.exp(-t * 2500)))
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def r_tomhi(): # 高音嗵 TC：200→140Hz 皮，短促圆头
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n = int(sr * 0.30)
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t = np.arange(n) / sr
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y = sweep(n, 205, 140, 14) * 0.95
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skin = bp_noise(n, 300, 1400) * np.exp(-t * 40) * 0.3
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return dc((y + skin) * (1 - np.exp(-t * 700)))
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def r_crash(): # 吊镲 TR：4-12kHz 噪 + 非谐波泛音列，1.2s 长尾
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n = int(sr * 1.30)
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t = np.arange(n) / sr
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y = bp_noise(n, 4000, 13000) * np.exp(-t * 5.5) * 0.8
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for f, g in [(6120, 0.30), (8130, 0.22), (10460, 0.15), (4620, 0.20)]:
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y += np.sin(2 * np.pi * f * t) * np.exp(-t * 4.2) * g
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y += bp_noise(n, 2000, 5000) * np.exp(-t * 9) * 0.35
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return dc(y * (1 - np.exp(-t * 1800)))
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def r_tomlo(): # 低音嗵 BR：120→75Hz 皮，共鸣更久
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n = int(sr * 0.35)
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t = np.arange(n) / sr
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y = sweep(n, 122, 75, 10) * 0.95
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skin = bp_noise(n, 200, 900) * np.exp(-t * 30) * 0.3
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return dc((y + skin) * (1 - np.exp(-t * 550)))
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def r_accent(): # Perfect 叠加亮音：木鱼 1.5kHz + 2.2kHz 短双音
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a = np.sin(2 * np.pi * 1500 * np.arange(int(sr * 0.05)) / sr) \
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* np.exp(-np.arange(int(sr * 0.05)) / sr * 90)
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b = np.sin(2 * np.pi * 2200 * np.arange(int(sr * 0.08)) / sr) \
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* np.exp(-np.arange(int(sr * 0.08)) / sr * 60) * 0.7
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return dc(np.concatenate([a, np.zeros(int(sr * 0.015)), b, np.zeros(int(sr * 0.03))]))
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ONE_SHOTS = {
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"inst_kick": r_kick,
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"dm_snare": r_snare,
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"dm_hat": r_hat,
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"dm_tomhi": r_tomhi,
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"dm_crash": r_crash,
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"dm_tomlo": r_tomlo,
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"dm_accent": r_accent,
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}
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# ---------------------------------------------------------------- 编码 + 真峰值校验
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def encode(wav_path, base):
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for args, ext in [(["-c:a", "libvorbis", "-q:a", "3"], ".ogg"),
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(["-c:a", "aac", "-b:a", "128k"], ".m4a")]:
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subprocess.run([FFMPEG, "-y", "-v", "error", "-i", wav_path,
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"-ar", "44100", *args, base + ext], check=True)
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def true_peak_db(path):
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r = subprocess.run([FFMPEG, "-i", path, "-af", "ebur128=peak=true", "-f", "null", "-"],
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capture_output=True, text=True)
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peaks = [float(line.split("Peak:")[1].strip().split()[0])
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for line in r.stderr.splitlines() if "Peak:" in line and "dBFS" in line]
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return max(peaks) if peaks else float("nan")
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def check_tp(base):
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return max(true_peak_db(base + ".ogg"), true_peak_db(base + ".m4a"))
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def main():
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report = []
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problems = []
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for fid, fn in ONE_SHOTS.items():
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wav_path = os.path.join(OUT, fid + ".wav")
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base = os.path.join(DST, fid)
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y = fade(norm(dc(fn())))
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sf.write(wav_path, stereo(y), sr)
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encode(wav_path, base)
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tp = check_tp(base)
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if tp > ONE_SHOT_TP_CEIL: # MDCT 过冲超限：按超出量降档重编一次再验
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gain = 10 ** ((ONE_SHOT_TP_CEIL - tp) / 20) * 0.98
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sf.write(wav_path, stereo(y * gain), sr)
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encode(wav_path, base)
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tp2 = check_tp(base)
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report.append((fid, len(y) / sr, tp, f"降 {20 * np.log10(gain):.1f}dB 重编 -> {tp2:.2f}"))
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tp = tp2
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else:
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report.append((fid, len(y) / sr, tp, ""))
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if tp > ONE_SHOT_TP_CEIL:
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problems.append(f"{fid}: 真峰值 {tp:.2f} dBFS 仍超 {ONE_SHOT_TP_CEIL}")
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print(f"{'id':12s} {'dur(s)':>7s} {'TP(dBFS)':>9s} note")
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for fid, dur, tp, note in report:
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print(f"{fid:12s} {dur:7.2f} {tp:9.2f} {note}")
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if problems:
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print("PROBLEMS:")
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for p in problems:
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print(" ", p)
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return 1
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print(f"ALL OK: {len(ONE_SHOTS)} one-shot -> {DST}")
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return 0
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if __name__ == "__main__":
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sys.exit(main())
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