快速通道修正(踩了v8.1短窗雷:2s窗+base模型同人相似度0.05~0.7狂震,90秒7次误切S2-S7):判定窗改回4s(与主通道同源)、周期1s保留(唯一提速来源)、阈值回0.35;占号前先查注册表——认出当前人销案/认出别人复用编号/陌生才发新号

app/src/main/java/com/k2fsa/sherpa/onnx/MainActivity.kt

@@ -221,13 +221,14 @@ class MainActivity : AppCompatActivity() {
     private val onsetMinSamples = 19200     // 1.2s 开口窗
     // 喂料恒定滞后(2026-09-16):识别流滞后 1.2s 喂入,切点前的音频可改道;
     // 全局字幕延迟 ~1.2s 的代价换取换人零串行
-    // 快速滚动通道(2026-09-16 用户拍板乐观快切):2s 尾窗/1s 周期/偏离
-    // 0.32 即切;准确复核只善后,切错由判定链并回自愈
+    // 快速滚动通道(2026-09-16 用户拍板乐观快切):4s 窗(与主通道同源
+    // 同尺寸——base 模型短窗(≤2s)同人相似度 0.05~0.7 狂震是 v8.1
+    // 换人风暴的根因,勿再踩)/1s 周期(唯一提速来源)/0.35 与主通道同款;
+    // 占号前先查注册表复用编号;准确复核只善后,切错由判定链并回自愈
     private val fastRollEnabled = true
-    private val fastRollDrop = 0.32f
     private val fastStepSamples = 16000     // 1s
-    private val fastWinSamples = 32000      // 2s 尾窗
-    private val fastMinSamples = 24000      // ≥1.5s 才判
+    private val fastWinSamples = 64000      // 4s 窗(全窗)
+    private val fastMinSamples = 48000      // ≥3s 才判(同 judgeMinSamples)
     private val feedLagSamples = 24000   // 1.5s:覆盖判定链(1.2s采集+计算)的
     // 余量,开口渗漏≈0;全局字幕延迟即此值,调参范围 1.2~1.5s
     @Volatile private var onsetSeq = 0L     // 行切换/会话开始作废在途开口判定
@@ -744,20 +745,27 @@ class MainActivity : AppCompatActivity() {
                                     tailF, sampleRateInHz) ?: return@post
                                 if (rseq != onsetSeq) return@post
                                 val sim = SpeakerRecognition.similarity(emb, anchor)
-                                if (sim >= fastRollDrop) return@post
+                                if (sim >= speakerSwitchDrop) return@post
+                                val active = activeLabelForWindow
+                                // 先查注册表:认出当前人 → 销案(白捡的防护);
+                                // 认出别人 → 复用其编号;彻底陌生才发新号
+                                val known = rollingSpeakerSearch(emb)
+                                if (known != null && known == active) return@post
                                 val nowMs = SystemClock.elapsedRealtime()
                                 if (nowMs - lastForceSwitchAtMs < 3_000L) {
                                     Log.i(TAG, "FASTROLL suppressed (cooldown)")
                                     return@post
                                 }
                                 lastForceSwitchAtMs = nowMs
-                                val active = activeLabelForWindow
-                                val label = SpeakerRecognition.nextAutoLabel().also {
+                                val label = known
+                                    ?: SpeakerRecognition.nextAutoLabel().also {
                                         SpeakerRecognition.fastRegistry.addAuto(it, emb)
                                     }
                                 Log.i(TAG, "FASTROLL-SWITCH sim=" +
                                         "%.2f".format(sim) +
-                                        " label=$label active=${active ?: "-"}")
+                                        " label=$label kind=" +
+                                        (if (known != null) "known" else "new") +
+                                        " active=${active ?: "-"}")
                                 cutRequested = true
                                 uiHandler.post { onOnsetSwitch(label) }
                                 accurateRecheckAfterSwitch(tailF, label, active, "FASTROLL")