SWITCH-FORCE 3s 冷却闸:实测强切落地链需1~2s完成,期间下一深低窗再开一枪(双发);冷却期内 suppressed(cooldown) 只记日志不再触发,去噪+防叠发;首次真机开火验证通过(deep-low 0.21 首窗即切+label=S1 防双号命中)

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

@@ -230,6 +230,8 @@ class MainActivity : AppCompatActivity() {
     @Volatile private var rollingLowStreak = 0
     @Volatile private var pendingForceEndpoint = false
     private val forceSwitchStreaks = 2
+    // 强切冷却(仅 speakerCheckHandler 线程访问,无需 volatile)
+    private var lastForceSwitchAtMs = 0L
     // C(最新者胜):每次投递滚动检测都刷新序号,队列里被超额的旧任务直接跳过
     @Volatile private var rollingSeq = 0L
     // 兜底残料:当前句子槽位最近一次滚动窗口声纹。整句判定因碎片算不出
@@ -787,6 +789,17 @@ class MainActivity : AppCompatActivity() {
                                                         rollingLowStreak >= forceSwitchStreaks
                                                     ) {
                                                         rollingLowStreak = 0
+                                                        // 3s 冷却闸(2026-09-16 实测:
+                                                        // 强切落地链要 1~2s 完成,期间
+                                                        // 下一个深低窗会再开一枪,日志
+                                                        // 双发;功能无害但去噪+防叠发)
+                                                        val nowMs = SystemClock.elapsedRealtime()
+                                                        if (nowMs - lastForceSwitchAtMs < 3_000L) {
+                                                            Log.i(TAG, "SWITCH-FORCE" +
+                                                                    " suppressed (cooldown)" +
+                                                                    " owner=sid$owner")
+                                                        } else {
+                                                            lastForceSwitchAtMs = nowMs
                                                             val label = newLabel
                                                                 ?: SpeakerRecognition.nextAutoLabel()
                                                                     .also {
@@ -814,6 +827,7 @@ class MainActivity : AppCompatActivity() {
                             }
                         }
                     }
+                }
 
                 stream.acceptWaveform(samples, sampleRate = sampleRateInHz)
                 while (onlineRecognizer.isReady(stream)) {