diff --git a/webrtc/common_audio/signal_processing/include/signal_processing_library.h b/webrtc/common_audio/signal_processing/include/signal_processing_library.h
index 3905fb41cf..2c42f994f1 100644
--- a/webrtc/common_audio/signal_processing/include/signal_processing_library.h
+++ b/webrtc/common_audio/signal_processing/include/signal_processing_library.h
@@ -879,13 +879,13 @@ void WebRtcSpl_ResetResample8khzTo22khz(WebRtcSpl_State8khzTo22khz* state);
  ******************************************************************/
 
 void WebRtcSpl_Resample48khzTo32khz(const int32_t* In, int32_t* Out,
-                                    const int32_t K);
+                                    int32_t K);
 
 void WebRtcSpl_Resample32khzTo24khz(const int32_t* In, int32_t* Out,
-                                    const int32_t K);
+                                    int32_t K);
 
 void WebRtcSpl_Resample44khzTo32khz(const int32_t* In, int32_t* Out,
-                                    const int32_t K);
+                                    int32_t K);
 
 /*******************************************************************
  * resample_48khz.c
@@ -955,7 +955,7 @@ void WebRtcSpl_ResetResample8khzTo48khz(WebRtcSpl_State8khzTo48khz* state);
  *
  ******************************************************************/
 
-void WebRtcSpl_DownsampleBy2(const int16_t* in, const int16_t len,
+void WebRtcSpl_DownsampleBy2(const int16_t* in, int16_t len,
                              int16_t* out, int32_t* filtState);
 
 void WebRtcSpl_UpsampleBy2(const int16_t* in, int16_t len,
diff --git a/webrtc/common_audio/signal_processing/resample.c b/webrtc/common_audio/signal_processing/resample.c
index fd3565dc0a..cb20be324e 100644
--- a/webrtc/common_audio/signal_processing/resample.c
+++ b/webrtc/common_audio/signal_processing/resample.c
@@ -20,10 +20,10 @@
 
 // Declaration of internally used functions
 static void WebRtcSpl_32khzTo22khzIntToShort(const int32_t *In, int16_t *Out,
-                                             const int32_t K);
+                                             int32_t K);
 
 void WebRtcSpl_32khzTo22khzIntToInt(const int32_t *In, int32_t *Out,
-                                    const int32_t K);
+                                    int32_t K);
 
 // interpolation coefficients
 static const int16_t kCoefficients32To22[5][9] = {
@@ -421,7 +421,7 @@ static void WebRtcSpl_DotProdIntToShort(const int32_t* in1, const int32_t* in2,
 
 void WebRtcSpl_32khzTo22khzIntToInt(const int32_t* In,
                                     int32_t* Out,
-                                    const int32_t K)
+                                    int32_t K)
 {
     /////////////////////////////////////////////////////////////
     // Filter operation:
@@ -463,7 +463,7 @@ void WebRtcSpl_32khzTo22khzIntToInt(const int32_t* In,
 
 void WebRtcSpl_32khzTo22khzIntToShort(const int32_t *In,
                                       int16_t *Out,
-                                      const int32_t K)
+                                      int32_t K)
 {
     /////////////////////////////////////////////////////////////
     // Filter operation:
diff --git a/webrtc/common_audio/signal_processing/resample_by_2.c b/webrtc/common_audio/signal_processing/resample_by_2.c
index 20c62e5c9e..521d09d5e8 100644
--- a/webrtc/common_audio/signal_processing/resample_by_2.c
+++ b/webrtc/common_audio/signal_processing/resample_by_2.c
@@ -67,7 +67,7 @@ static const uint16_t kResampleAllpass2[3] = {12199, 37471, 60255};
 
 // decimator
 #if !defined(MIPS32_LE)
-void WebRtcSpl_DownsampleBy2(const int16_t* in, const int16_t len,
+void WebRtcSpl_DownsampleBy2(const int16_t* in, int16_t len,
                              int16_t* out, int32_t* filtState) {
   int32_t tmp1, tmp2, diff, in32, out32;
   int16_t i;
diff --git a/webrtc/common_audio/signal_processing/resample_by_2_mips.c b/webrtc/common_audio/signal_processing/resample_by_2_mips.c
index c98739ca76..e2476ac0cd 100644
--- a/webrtc/common_audio/signal_processing/resample_by_2_mips.c
+++ b/webrtc/common_audio/signal_processing/resample_by_2_mips.c
@@ -29,7 +29,7 @@ static const uint16_t kResampleAllpass2[3] = {12199, 37471, 60255};
 
 // decimator
 void WebRtcSpl_DownsampleBy2(const int16_t* in,
-                             const int16_t len,
+                             int16_t len,
                              int16_t* out,
                              int32_t* filtState) {
   int32_t out32;
diff --git a/webrtc/common_audio/signal_processing/resample_fractional.c b/webrtc/common_audio/signal_processing/resample_fractional.c
index 85f58dada8..377d2a6fdf 100644
--- a/webrtc/common_audio/signal_processing/resample_fractional.c
+++ b/webrtc/common_audio/signal_processing/resample_fractional.c
@@ -42,7 +42,7 @@ static const int16_t kCoefficients44To32[4][9] = {
 //      K: number of blocks
 
 void WebRtcSpl_Resample48khzTo32khz(const int32_t *In, int32_t *Out,
-                                    const int32_t K)
+                                    int32_t K)
 {
     /////////////////////////////////////////////////////////////
     // Filter operation:
@@ -88,7 +88,7 @@ void WebRtcSpl_Resample48khzTo32khz(const int32_t *In, int32_t *Out,
 //      K: number of blocks
 
 void WebRtcSpl_Resample32khzTo24khz(const int32_t *In, int32_t *Out,
-                                    const int32_t K)
+                                    int32_t K)
 {
     /////////////////////////////////////////////////////////////
     // Filter operation:
@@ -197,7 +197,7 @@ static void WebRtcSpl_ResampDotProduct(const int32_t *in1, const int32_t *in2,
 //      K: number of blocks
 
 void WebRtcSpl_Resample44khzTo32khz(const int32_t *In, int32_t *Out,
-                                    const int32_t K)
+                                    int32_t K)
 {
     /////////////////////////////////////////////////////////////
     // Filter operation:
diff --git a/webrtc/common_audio/signal_processing/splitting_filter.c b/webrtc/common_audio/signal_processing/splitting_filter.c
index e1bd427b1c..6a563cbe0c 100644
--- a/webrtc/common_audio/signal_processing/splitting_filter.c
+++ b/webrtc/common_audio/signal_processing/splitting_filter.c
@@ -43,7 +43,7 @@ static const uint16_t WebRtcSpl_kAllPassFilter2[3] = {21333, 49062, 63010};
 //                            |data_length|
 //
 
-void WebRtcSpl_AllPassQMF(int32_t* in_data, const int16_t data_length,
+void WebRtcSpl_AllPassQMF(int32_t* in_data, int16_t data_length,
                           int32_t* out_data, const uint16_t* filter_coefficients,
                           int32_t* filter_state)
 {