revert(xiaozhi): remove kws rms gate and debounce

examples/xiaozhi/xiaozhi/services/audio/kws/__init__.py

@@ -3,8 +3,6 @@ import os
 import threading
 import time
 
-import numpy as np
-
 from config import APP_CONFIG
 from xiaozhi.event import EventManager
 from xiaozhi.ref import get_speaker, get_xiaoai, get_xiaozhi, set_kws
@@ -13,13 +11,9 @@ from xiaozhi.services.audio.stream import MyAudio
 from xiaozhi.services.protocols.typing import AudioConfig, DeviceState
 from xiaozhi.utils.base import get_env
 
-KWS_MIN_RMS = 300.0
-KWS_MIN_TRIGGER_INTERVAL_MS = 1500
-
 
 class _KWS:
     def __init__(self):
-        self.last_trigger_ms = 0.0
         set_kws(self)
 
     def start(self):
@@ -51,12 +45,6 @@ class _KWS:
     def resume(self):
         self.paused = False
 
-    def _rms(self, frames: bytes) -> float:
-        samples = np.frombuffer(frames, dtype=np.int16).astype(np.float32)
-        if samples.size == 0:
-            return 0.0
-        return float(np.sqrt(np.mean(samples * samples) + 1e-6))
-
     def _detection_loop(self):
         SherpaOnnx.start()
         self.stream.start_stream()
@@ -77,18 +65,8 @@ class _KWS:
                 time.sleep(0.01)
                 continue
 
-            # 静音门控：低能量帧跳过 KWS 推理
-            if self._rms(frames) < KWS_MIN_RMS:
-                time.sleep(0.005)
-                continue
-
             result = SherpaOnnx.kws(frames)
             if result:
-                # 防抖：限制连续触发频率，降低重复误触发
-                now_ms = time.monotonic() * 1000.0
-                if now_ms - self.last_trigger_ms < KWS_MIN_TRIGGER_INTERVAL_MS:
-                    continue
-                self.last_trigger_ms = now_ms
                 print(f"🔥 触发唤醒: {result}")
                 self.on_message(result)