diff --git a/Alc/ALu.c b/Alc/ALu.c
index f9a9ff2e..fbac9db2 100644
--- a/Alc/ALu.c
+++ b/Alc/ALu.c
@@ -870,6 +870,11 @@ static __inline ALfloat lerp(ALfloat val1, ALfloat val2, ALint frac)
 {
     return val1 + ((val2-val1)*(frac * (1.0f/(1<<FRACTIONBITS))));
 }
+static __inline ALfloat cos_lerp(ALfloat val1, ALfloat val2, ALint frac)
+{
+    ALfloat mult = (1.0f-cos(frac * (1.0f/(1<<FRACTIONBITS)) * M_PI)) * 0.5f;
+    return val1 + ((val2-val1)*mult);
+}
 
 static void MixSomeSources(ALCcontext *ALContext, float (*DryBuffer)[OUTPUTCHANNELS], ALuint SamplesToDo)
 {
@@ -1106,6 +1111,8 @@ another_source:
                 break;
                 case LINEAR: DO_MIX(lerp);
                 break;
+                case COSINE: DO_MIX(cos_lerp);
+                break;
                 case RESAMPLER_MAX:
                 break;
             }
@@ -1153,6 +1160,8 @@ another_source:
                 break;
                 case LINEAR: DO_MIX(lerp);
                 break;
+                case COSINE: DO_MIX(cos_lerp);
+                break;
                 case RESAMPLER_MAX:
                 break;
             }
@@ -1171,6 +1180,8 @@ another_source:
                 break;
                 case LINEAR: DO_MIX(lerp);
                 break;
+                case COSINE: DO_MIX(cos_lerp);
+                break;
                 case RESAMPLER_MAX:
                 break;
             }
@@ -1190,6 +1201,8 @@ another_source:
                 break;
                 case LINEAR: DO_MIX(lerp);
                 break;
+                case COSINE: DO_MIX(cos_lerp);
+                break;
                 case RESAMPLER_MAX:
                 break;
             }
@@ -1210,6 +1223,8 @@ another_source:
                 break;
                 case LINEAR: DO_MIX(lerp);
                 break;
+                case COSINE: DO_MIX(cos_lerp);
+                break;
                 case RESAMPLER_MAX:
                 break;
             }
@@ -1230,6 +1245,8 @@ another_source:
                 break;
                 case LINEAR: DO_MIX(lerp);
                 break;
+                case COSINE: DO_MIX(cos_lerp);
+                break;
                 case RESAMPLER_MAX:
                 break;
             }
diff --git a/OpenAL32/Include/alSource.h b/OpenAL32/Include/alSource.h
index de746c61..2e1cf3de 100644
--- a/OpenAL32/Include/alSource.h
+++ b/OpenAL32/Include/alSource.h
@@ -25,6 +25,7 @@ extern "C" {
 typedef enum {
     POINT = 0,
     LINEAR,
+    COSINE,
 
     RESAMPLER_MAX
 } resampler_t;
diff --git a/alsoftrc.sample b/alsoftrc.sample
index bda8dd45..aa95121e 100644
--- a/alsoftrc.sample
+++ b/alsoftrc.sample
@@ -64,6 +64,7 @@
 #  Selects the resampler used when mixing sources. Valid values are:
 #  0 - None (nearest sample, no interpolation)
 #  1 - Linear (extrapolates samples using a linear slope between samples)
+#  2 - Cosine (extrapolates using a (co)sine slope)
 #  Specifying other values will result in using the default (linear).
 #resampler = 1