diff --git a/codec2talkie/build.gradle b/codec2talkie/build.gradle
index 3289356..7e440cc 100644
--- a/codec2talkie/build.gradle
+++ b/codec2talkie/build.gradle
@@ -10,8 +10,8 @@ android {
         applicationId "com.radio.codec2talkie"
         minSdkVersion 23
         targetSdkVersion 30
-        versionCode 167
-        versionName "1.67"
+        versionCode 168
+        versionName "1.68"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
diff --git a/libopus-android/src/main/cpp/OpusJNI.cpp b/libopus-android/src/main/cpp/OpusJNI.cpp
index 8c5bb25..abaa9fc 100644
--- a/libopus-android/src/main/cpp/OpusJNI.cpp
+++ b/libopus-android/src/main/cpp/OpusJNI.cpp
@@ -27,6 +27,7 @@ namespace Java_com_radio_opus_Opus {
 
             opus_encoder_ctl(encoder, OPUS_SET_BITRATE(bitrate));
             opus_encoder_ctl(encoder, OPUS_SET_COMPLEXITY(complexity));
+            opus_encoder_ctl(encoder, OPUS_SET_SIGNAL(OPUS_SIGNAL_VOICE));
         }
 
         int decoderError;