edgevoid
68db84a10c
- 两个虚拟声卡: 5.1 直通版 / 立体声矩阵上混版 - 全链路 96kHz/24bit, SADIE-II 真人 HRTF 96K/512tap - 命令: 空间音频(开关) / mpv-影院(单程序) - deb 打包 + 验收测试脚本 - README 记录 9 个实测踩坑(增益校准/采样率/相位等)
64 lines
2.0 KiB
Bash
64 lines
2.0 KiB
Bash
#!/bin/bash
|
|
# 逐方向精确测试: 每个方向单独生成一个 5.1(只有该声道有声), 渲染后看左右能量比
|
|
set -eu
|
|
cd "/home/lou/桌面/工作区/实验/空间音频"
|
|
SOFA=/usr/share/libmysofa/MIT_KEMAR_normal_pinna.sofa
|
|
mkdir -p 方向测试
|
|
cd 方向测试
|
|
|
|
i=0
|
|
for name in FL FR FC LFE BL BR; do
|
|
expr=""
|
|
j=0
|
|
while [ "$j" -lt 6 ]; do
|
|
[ "$j" -gt 0 ] && expr="$expr|"
|
|
if [ "$j" -eq "$i" ]; then
|
|
expr="${expr}0.6*sin(2*PI*440*t)"
|
|
else
|
|
expr="${expr}0"
|
|
fi
|
|
j=$((j + 1))
|
|
done
|
|
ffmpeg -y -hide_banner -loglevel warning -f lavfi \
|
|
-i "aevalsrc='$expr':d=0.4:s=48000:c=5.1" -c:a pcm_s16le "$name.wav"
|
|
ffmpeg -y -hide_banner -loglevel warning -i "$name.wav" \
|
|
-af "sofalizer=sofa=$SOFA:type=freq:radius=1.2" -c:a pcm_s16le "${name}_hrtf.wav"
|
|
i=$((i + 1))
|
|
done
|
|
|
|
python3 - <<'PY'
|
|
import os
|
|
import struct
|
|
import wave
|
|
|
|
NAMES = ["FL", "FR", "FC", "LFE", "BL", "BR"]
|
|
EXPECT = {"FL": ">1 偏左", "FR": "<1 偏右", "FC": "~1 居中",
|
|
"LFE": "~1 居中", "BL": ">1 偏左", "BR": "<1 偏右"}
|
|
|
|
|
|
def ratio(path: str) -> float:
|
|
with wave.open(path) as w:
|
|
ch, n = w.getnchannels(), w.getnframes()
|
|
raw = w.readframes(n)
|
|
s = struct.unpack("<%dh" % (len(raw) // 2), raw)
|
|
left = [float(s[i * 2]) for i in range(len(s) // 2)]
|
|
right = [float(s[i * 2 + 1]) for i in range(len(s) // 2)]
|
|
el = (sum(x * x for x in left) / len(left)) ** 0.5
|
|
er = (sum(x * x for x in right) / len(right)) ** 0.5
|
|
return el / er if er else 999.0
|
|
|
|
|
|
print("%-5s %14s %14s %s" % ("方向", "原始 L/R", "HRTF L/R", "期望"))
|
|
print("-" * 56)
|
|
for nm in NAMES:
|
|
a, b = nm + ".wav", nm + "_hrtf.wav"
|
|
if os.path.isfile(a) and os.path.isfile(b):
|
|
ra = ratio(a)
|
|
rb = ratio(b)
|
|
flag = ""
|
|
ok = (rb > 1.05) if EXPECT[nm].startswith(">1") else \
|
|
((rb < 0.95) if EXPECT[nm].startswith("<1") else (0.8 < rb < 1.25))
|
|
flag = "OK" if ok else "偏了"
|
|
print("%-5s %14.2f %14.2f %-9s %s" % (nm, ra, rb, EXPECT[nm], flag))
|
|
PY
|