skip text.delta

Author: Xiting Zhang

sdk/voicelive/azure-ai-voicelive/src/main/java/com/azure/ai/voicelive/VoiceLiveTracer.java

@@ -21,8 +21,10 @@
 import com.azure.ai.voicelive.models.SessionUpdateError;
 import com.azure.ai.voicelive.models.SessionUpdateErrorDetails;
 import com.azure.ai.voicelive.models.SessionUpdateResponseAudioDelta;
+import com.azure.ai.voicelive.models.SessionUpdateResponseAudioTranscriptDelta;
 import com.azure.ai.voicelive.models.SessionUpdateResponseCreated;
 import com.azure.ai.voicelive.models.SessionUpdateResponseDone;
+import com.azure.ai.voicelive.models.SessionUpdateResponseTextDelta;
 import com.azure.ai.voicelive.models.SessionUpdateResponseFunctionCallArgumentsDelta;
 import com.azure.ai.voicelive.models.SessionUpdateResponseFunctionCallArgumentsDone;
 import com.azure.ai.voicelive.models.SessionUpdateResponseOutputItemAdded;
@@ -497,6 +499,14 @@ void traceRecv(SessionUpdate update, String rawPayload) {
             return;
         }
 
+        // Skip high-volume text/transcript delta events to reduce telemetry noise.
+        // These carry incremental fragments with no counters to track.
+        // Matches Python SDK's _DELTA_SKIP_EVENT_TYPES.
+        if (update instanceof SessionUpdateResponseTextDelta
+            || update instanceof SessionUpdateResponseAudioTranscriptDelta) {
+            return;
+        }
+
         String eventType = update.getType() != null ? update.getType().toString() : EVENT_TYPE_UNKNOWN;
         String spanName = OPERATION_RECV + " " + eventType;