增加TVOC检测库，修复ASR声音采集

boards/default_src/micropython_esp32s3/origin/build/lib/ai_camera.py

@@ -104,3 +104,7 @@ class AI:
             self._ai.delete(_id)  
         else:
             raise AttributeError('This model can only run face recognition')
+
+    def stop(self):
+        if self._ai is not None:
+            self._ai.stop()

boards/default_src/micropython_esp32s3/origin/build/lib/mixgo_sant.py

@@ -156,9 +156,11 @@ class LED:
 onboard_led = LED(onboard_bot.led_pwm)
 
 class Voice_Energy:
-	def read(self):
-		_dat = onboard_asr._rreg(0x08, 3) #在语音识别里获取
-		return (_dat[0] | _dat[1] << 8) // 10
+	def read(self, samples=10):
+		values = []
+		for _ in range(samples):
+			values.append(int.from_bytes(onboard_asr._rreg(0x08, 3)[:2], 'little')) #在语音识别里获取
+		return sorted(values)[samples // 2]
 
 onboard_sound = Voice_Energy()