diff --git a/crap/eq.h b/crap/eq.h
index 578ca90..244063d 100644
--- a/crap/eq.h
+++ b/crap/eq.h
@@ -1,9 +1,6 @@
 #include <stdio.h>
 #include <string.h>
 
-#include "util.h"
-#include "param.h"
-
 #define BANDS 4
 
 #define ID 0x000CAFED
@@ -13,44 +10,29 @@
 #define COPYRIGHT "MIT"
 #define PARAMETERS (BANDS*3)
 
+#define BLOCK_SIZE 256
+
+#include "util.h"
+#include "param.h"
+
 typedef struct {
 	biquad filters[2][BANDS];
 	float fs;
 } personal;
 
-INNER double
-process_one(biquad *filters, double samp)
-{
-	for (int i = 0; i < BANDS; i++)
-		samp = biquad_run(&filters[i], samp);
-	return samp;
-}
-
-INNER void
-process(personal *data,
-    float *in_L, float *in_R,
-    float *out_L, float *out_R,
-    unsigned long count)
-{
-	disable_denormals();
-	for (unsigned long pos = 0; pos < count; pos++) {
-		out_L[pos] = process_one(data->filters[0], in_L[pos]);
-		out_R[pos] = process_one(data->filters[1], in_R[pos]);
-	}
-}
-
-INNER void
+static void
 process_double(personal *data,
     double *in_L, double *in_R,
     double *out_L, double *out_R,
     unsigned long count)
-{
-	disable_denormals();
-	for (unsigned long pos = 0; pos < count; pos++) {
-		out_L[pos] = process_one(data->filters[0], in_L[pos]);
-		out_R[pos] = process_one(data->filters[1], in_R[pos]);
-	}
-}
+#include "process_biquads.h"
+
+static void
+process(personal *data,
+    float *in_L, float *in_R,
+    float *out_L, float *out_R,
+    ulong count)
+#include "process_biquads.h"
 
 INNER void
 resume(personal *data)
diff --git a/crap/eq_const.h b/crap/eq_const.h
index 8aa9644..101ea7c 100644
--- a/crap/eq_const.h
+++ b/crap/eq_const.h
@@ -20,45 +20,15 @@ static void
 process_double(personal *data,
     double *in_L, double *in_R,
     double *out_L, double *out_R,
+    unsigned long count)
+#include "process_biquads.h"
+
+static void
+process(personal *data,
+    float *in_L, float *in_R,
+    float *out_L, float *out_R,
     ulong count)
-{
-	disable_denormals();
-
-	v2df buf[BLOCK_SIZE];
-
-	biquad *f0, *f1;
-
-	for (ulong pos = 0; pos < count; pos += BLOCK_SIZE) {
-		ulong rem = BLOCK_SIZE;
-		if (pos + BLOCK_SIZE > count)
-			rem = count - pos;
-
-		for (ulong i = 0; i < rem; i++) {
-			buf[i][0] = in_L[i];
-			buf[i][1] = in_R[i];
-		}
-
-		f0 = data->filters[0];
-		f1 = data->filters[1];
-		for (ulong i = 0; i < BANDS; i++) {
-			biquad_run_block_stereo(f0, f1, buf, rem);
-			f0++;
-			f1++;
-		}
-
-		for (ulong i = 0; i < rem; i++) {
-			out_L[i] = buf[i][0];
-			out_R[i] = buf[i][1];
-		}
-
-		in_L += BLOCK_SIZE;
-		in_R += BLOCK_SIZE;
-		out_L += BLOCK_SIZE;
-		out_R += BLOCK_SIZE;
-	}
-}
-
-#include "process.h"
+#include "process_biquads.h"
 
 INNER void
 construct(personal *data)
diff --git a/include/process_biquads.h b/include/process_biquads.h
new file mode 100644
index 0000000..a277a4d
--- /dev/null
+++ b/include/process_biquads.h
@@ -0,0 +1,36 @@
+{
+	disable_denormals();
+
+	v2df buf[BLOCK_SIZE];
+
+	biquad *f0, *f1;
+
+	for (ulong pos = 0; pos < count; pos += BLOCK_SIZE) {
+		ulong rem = BLOCK_SIZE;
+		if (pos + BLOCK_SIZE > count)
+			rem = count - pos;
+
+		for (ulong i = 0; i < rem; i++) {
+			buf[i][0] = in_L[i];
+			buf[i][1] = in_R[i];
+		}
+
+		f0 = data->filters[0];
+		f1 = data->filters[1];
+		for (ulong i = 0; i < BANDS; i++) {
+			biquad_run_block_stereo(f0, f1, buf, rem);
+			f0++;
+			f1++;
+		}
+
+		for (ulong i = 0; i < rem; i++) {
+			out_L[i] = buf[i][0];
+			out_R[i] = buf[i][1];
+		}
+
+		in_L += BLOCK_SIZE;
+		in_R += BLOCK_SIZE;
+		out_L += BLOCK_SIZE;
+		out_R += BLOCK_SIZE;
+	}
+}