修块间台阶残留: 归一化增益改块内逐样本线性插值(zipper 噪声); 谐波(相对基频) +0/+6dB 由 -12.1/-15.9 降到 -90.1/-70.6 dB; 调试用的测试脚本收进测试/, 清理全部调试残留

2026-09-19 19:22:48 +08:00
parent a81adb616b
commit 38ae1fa22e
12 changed files with 942 additions and 1 deletions
@@ -0,0 +1,68 @@
+"""三点电平测量: 虚拟声卡入口 / HRTF 输入(=归一化输出) / 数字输出。用来定位哪一级没处理。"""
+import array
+import json
+import math
+import subprocess
+import time
+import wave
+
+RATE = 48000
+DEVNULL = subprocess.DEVNULL
+SRC = "/tmp/h_white.wav"
+
+
+def ids() -> dict[str, int]:
+    d = json.loads(subprocess.run(["pw-dump"], capture_output=True, text=True).stdout)
+    out = {}
+    for n in d:
+        if n.get("type") != "PipeWire:Interface:Node":
+            continue
+        p = n.get("info", {}).get("props", {}) or {}
+        nm = p.get("node.name") or ""
+        if p.get("media.class") == "Audio/Sink":
+            if nm == "collaplex_vsink":
+                out["vsink"] = n["id"]
+            elif nm == "collaplex_hrtf_in":
+                out["hrtf_in"] = n["id"]
+            elif nm.endswith("iec958-stereo"):
+                out["out"] = n["id"]
+        elif nm == "alsa_input.usb-EDIFIER_Technology_EDIFIER_Fit900NB_4250315939393214-00.mono-fallback":
+            out["mic"] = n["id"]
+    return out
+
+
+def rec(target: int, secs: float, path: str) -> float:
+    r = subprocess.Popen(["pw-record", "--target", str(target), "-P", "{ stream.capture.sink = true }",
+                          "--rate", str(RATE), "--channels", "2", path], stderr=DEVNULL)
+    time.sleep(secs)
+    r.terminate()
+    r.wait()
+    w = wave.open(path)
+    n = w.getnframes()
+    d = array.array("h")
+    d.frombytes(w.readframes(n))
+    if not d:
+        return -99
+    rms = (sum(x * x for x in d) / len(d)) ** 0.5 / 32768
+    return 20 * math.log10(rms) if rms > 0 else -99
+
+
+ID = ids()
+print("节点 id: %s" % ID)
+
+print("\n--- 静音时(应 -99 = 抓的是 sink monitor; 若 -50 左右 = 抓到麦克风) ---")
+for k in ("vsink", "hrtf_in", "out", "mic"):
+    if k in ID:
+        print("  %-8s %.2f dBFS" % (k, rec(ID[k], 1.0, "/tmp/t_%s.wav" % k)))
+
+print("\n--- 播素材时(素材 -12 dBFS) ---")
+p = subprocess.Popen(["pw-play", "--target", "collaplex_vsink", SRC], stderr=DEVNULL)
+time.sleep(0.5)
+res = {}
+for k in ("vsink", "hrtf_in", "out", "mic"):
+    if k in ID:
+        res[k] = rec(ID[k], 1.2, "/tmp/p_%s.wav" % k)
+p.terminate()
+p.wait()
+for k, v in res.items():
+    print("  %-8s %.2f dBFS" % (k, v))