diff --git a/rtc_base/logging.h b/rtc_base/logging.h
index 93c2882633..83bc33a60b 100644
--- a/rtc_base/logging.h
+++ b/rtc_base/logging.h
@@ -61,6 +61,12 @@
 #include "rtc_base/constructormagic.h"
 #include "rtc_base/thread_annotations.h"
 
+#if !defined(NDEBUG) || defined(DLOG_ALWAYS_ON)
+#define RTC_DLOG_IS_ON 1
+#else
+#define RTC_DLOG_IS_ON 0
+#endif
+
 namespace rtc {
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -360,7 +366,22 @@ inline bool LogCheckLevel(LoggingSeverity sev) {
 #define RTC_PLOG(sev, err) \
   RTC_LOG_ERR_EX(sev, err)
 
-// TODO(?): Add an "assert" wrapper that logs in the same manner.
+// The RTC_DLOG macros are equivalent to their RTC_LOG counterparts except that
+// they only generate code in debug builds.
+#if RTC_DLOG_IS_ON
+#define RTC_DLOG(sev) RTC_LOG(sev)
+#define RTC_DLOG_V(sev) RTC_LOG_V(sev)
+#define RTC_DLOG_F(sev) RTC_LOG_F(sev)
+#else
+#define RTC_DLOG_EAT_STREAM_PARAMS(sev) \
+  (true ? true : ((void)(rtc::sev), true)) \
+      ? static_cast<void>(0)          \
+      : rtc::LogMessageVoidify() &    \
+        rtc::LogMessage(__FILE__, __LINE__, rtc::sev).stream()
+#define RTC_DLOG(sev) RTC_DLOG_EAT_STREAM_PARAMS(sev)
+#define RTC_DLOG_V(sev) RTC_DLOG_EAT_STREAM_PARAMS(sev)
+#define RTC_DLOG_F(sev) RTC_DLOG_EAT_STREAM_PARAMS(sev)
+#endif
 
 }  // namespace rtc
 
diff --git a/voice_engine/transmit_mixer.cc b/voice_engine/transmit_mixer.cc
index bfee66e69b..049a64c2e8 100644
--- a/voice_engine/transmit_mixer.cc
+++ b/voice_engine/transmit_mixer.cc
@@ -32,8 +32,8 @@ TransmitMixer::Create(TransmitMixer*& mixer)
     mixer = new TransmitMixer();
     if (mixer == NULL)
     {
-      RTC_LOG(LS_ERROR) << "TransmitMixer::Create() unable to allocate memory "
-                           "for mixer";
+      RTC_DLOG(LS_ERROR) <<
+          "TransmitMixer::Create() unable to allocate memory for mixer";
       return -1;
     }
     return 0;
@@ -187,8 +187,8 @@ void TransmitMixer::ProcessAudio(int delay_ms, int clock_drift,
 
   GainControl* agc = audioproc_->gain_control();
   if (agc->set_stream_analog_level(current_mic_level) != 0) {
-    RTC_LOG(LS_ERROR) << "set_stream_analog_level failed: current_mic_level = "
-                      << current_mic_level;
+    RTC_DLOG(LS_ERROR) << "set_stream_analog_level failed: current_mic_level = "
+                       << current_mic_level;
     assert(false);
   }
 
@@ -201,7 +201,7 @@ void TransmitMixer::ProcessAudio(int delay_ms, int clock_drift,
 
   int err = audioproc_->ProcessStream(&_audioFrame);
   if (err != 0) {
-    RTC_LOG(LS_ERROR) << "ProcessStream() error: " << err;
+    RTC_DLOG(LS_ERROR) << "ProcessStream() error: " << err;
     assert(false);
   }