feat:小节频分低于指定分贝的频率统一处理为-1；分贝信息持续变小不影响节奏

mec-biz/src/main/java/com/ym/mec/biz/handler/WebSocketHandler.java

@@ -296,7 +296,7 @@ public class WebSocketHandler extends AbstractWebSocketHandler {
             //节奏匹配数量
             float cadenceNum = 0;
             //节奏有效阈值
-            float cadenceValidDuty = 0.01f;
+            float cadenceValidDuty = 0.09f;
 
             //完整性误差范围
             float integrityRange = 30;