diff --git a/xplan-ios/Main/RTC/RtcImpl/TRTCRtcImpl.m b/xplan-ios/Main/RTC/RtcImpl/TRTCRtcImpl.m
index f38d97b7..78551d2b 100644
--- a/xplan-ios/Main/RTC/RtcImpl/TRTCRtcImpl.m
+++ b/xplan-ios/Main/RTC/RtcImpl/TRTCRtcImpl.m
@@ -103,7 +103,11 @@
 - (void)broadcast:(BOOL)on {
     [self.engine switchRole:on ? TRTCRoleAnchor : TRTCRoleAudience];
     if (on) {
-        [self.engine startLocalAudio:TRTCAudioQualityDefault];
+        NSString *jsonString = @"{\"api\":\"setAudioQualityEx\",\"params\":{\"sampleRate\":48000,\"channel\":2,\"bitrate\":192,\"encodeMode\":1,\"systemVolumeType\":1}}";
+        [self.engine callExperimentalAPI:jsonString];
+        NSString *aecString = @"{\"api\":\"enableAudioAEC\",\"params\":{\"enable\":1,\"level\":100}}";
+        [self.engine callExperimentalAPI:aecString];
+        [self.engine startLocalAudio:TRTCAudioQualityMusic];
     } else {
         [self.engine stopLocalAudio];
     }