diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index a9eaa8a..994c7db 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -5223,6 +5223,7 @@
     mBufferSize = mInput->stream->common.get_buffer_size(&mInput->stream->common);
     mFrameCount = mBufferSize / mFrameSize;
     mRsmpInBuffer = new int16_t[mFrameCount * mChannelCount];
+    memset(mRsmpInBuffer, 0, mFrameCount * mChannelCount * sizeof(mRsmpInBuffer[0]));
 
     if (mSampleRate != mReqSampleRate && mChannelCount <= FCC_2 && mReqChannelCount <= FCC_2)
     {