diff --git a/library/src/main/java/net/ossrs/yasea/SrsEncoder.java b/library/src/main/java/net/ossrs/yasea/SrsEncoder.java
index 8de0eb1..bc47510 100644
--- a/library/src/main/java/net/ossrs/yasea/SrsEncoder.java
+++ b/library/src/main/java/net/ossrs/yasea/SrsEncoder.java
@@ -547,10 +547,10 @@ public class SrsEncoder {
     }
 
     public AudioRecord chooseAudioRecord() {
-        AudioRecord mic = new AudioRecord(MediaRecorder.AudioSource.DEFAULT, SrsEncoder.ASAMPLERATE,
+        AudioRecord mic = new AudioRecord(MediaRecorder.AudioSource.VOICE_COMMUNICATION, SrsEncoder.ASAMPLERATE,
             AudioFormat.CHANNEL_IN_STEREO, AudioFormat.ENCODING_PCM_16BIT, getPcmBufferSize() * 4);
         if (mic.getState() != AudioRecord.STATE_INITIALIZED) {
-            mic = new AudioRecord(MediaRecorder.AudioSource.DEFAULT, SrsEncoder.ASAMPLERATE,
+            mic = new AudioRecord(MediaRecorder.AudioSource.VOICE_COMMUNICATION, SrsEncoder.ASAMPLERATE,
                 AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT, getPcmBufferSize() * 4);
             if (mic.getState() != AudioRecord.STATE_INITIALIZED) {
                 mic = null;