diff --git a/tts/tts-pad/src/main/java/com/mogo/tts/pad/PadTTS.java b/tts/tts-pad/src/main/java/com/mogo/tts/pad/PadTTS.java
index 01c0aa531d..c875a538ad 100644
--- a/tts/tts-pad/src/main/java/com/mogo/tts/pad/PadTTS.java
+++ b/tts/tts-pad/src/main/java/com/mogo/tts/pad/PadTTS.java
@@ -74,6 +74,7 @@ public class PadTTS implements IMogoTTS, VoiceClient.VoiceCmdCallBack, OnTtsList
         mVoiceClient.release();
         if (mEngine != null) {
             mEngine.destroy();
+            mEngine = null;
         }
         mHasAuth = false;
         mSpeakVoiceMap.clear();
@@ -95,11 +96,11 @@ public class PadTTS implements IMogoTTS, VoiceClient.VoiceCmdCallBack, OnTtsList
     private static final String TTS_BACK_RES_ZHILING = "zhilingf_common_back_ce_local.v2.1.0.bin";
     private int audioRecorderType = DUILiteConfig.TYPE_COMMON_MIC;
     //echo module res
-    private static final String ECHO_RES = "echo/sspe_aec_ch2_mic1_ref1_asr_v2.0.0.95.bin";
+    private static final String ECHO_RES = "echo/AEC_ch4-2-ch2_2ref_chezai_v2_outgain1_20200407_dw_gain_0.1.bin";
     //local tts module res
     private static final String TTS_DICT_RES = "aitts_sent_dict_local.db";
     private static final String TTS_FRONT_RES = "local_front.bin";
-    public static final String TTS_BACK_RES_GUODGM = "tts/guodgm_common_back_ce_local.v2.1.0.bin";
+    public static final String TTS_BACK_RES_GUODGM = "guodgm_common_back_ce_local.v2.1.0.bin";
     private AILocalTTSEngine mEngine;
     private AILocalTTSIntent mAILocalTTSIntent;
     private String[] mBackResBinArray = new String[]{TTS_BACK_RES_ZHILING, TTS_BACK_RES_GUODGM};
@@ -123,9 +124,9 @@ public class PadTTS implements IMogoTTS, VoiceClient.VoiceCmdCallBack, OnTtsList
             //echo 配置
             EchoConfig echoConfig = new EchoConfig.Builder()
                     .setAecResource(ECHO_RES)// 2mic AEC资源
-                    .setChannels(2)//设置音频通道数
-                    .setMicNumber(1)//设置mic数
-                    .setSavedDirPath("/sdcard/aispeech/aecPcmFile/")//设置echo前后音频保存路径
+                    .setChannels(4)//设置音频通道数
+                    .setMicNumber(2)//设置mic数
+                    .setSavedDirPath("/sdcard/aispeech/echo")//设置echo前后音频保存路径
                     .create();
 
             if (BuildConfig.DEBUG) {