encoder.go      | 28 ++++++++++++++++++++++------
 encoder_test.go | 16 +++++++++++++++-

diff --git a/encoder.go b/encoder.go
index 3690bc1b64e43ce01d0c003e833158be391d1404..21696da6a53ea57c8344f1fa90382d0efbf0f35a 100644
--- a/encoder.go
+++ b/encoder.go
@@ -13,14 +13,26 @@ /*
 #cgo pkg-config: opus
 #include <opus/opus.h>
 
-int bridge_set_dtx(OpusEncoder *st, int use_dtx) {
-	return opus_encoder_ctl(st, OPUS_SET_DTX(use_dtx));
+void
+bridge_encoder_set_dtx(OpusEncoder *st, opus_int32 use_dtx)
+{
+	opus_encoder_ctl(st, OPUS_SET_DTX(use_dtx));
 }
 
-int bridge_get_dtx(OpusEncoder *st) {
-	int dtx = 0;
+opus_int32
+bridge_encoder_get_dtx(OpusEncoder *st)
+{
+	opus_int32 dtx = 0;
 	opus_encoder_ctl(st, OPUS_GET_DTX(&dtx));
 	return dtx;
+}
+
+opus_int32
+bridge_encoder_get_sample_rate(OpusEncoder *st)
+{
+	opus_int32 sample_rate = 0;
+	opus_encoder_ctl(st, OPUS_GET_SAMPLE_RATE(&sample_rate));
+	return sample_rate;
 }
 */
 import "C"
@@ -124,10 +136,14 @@ 	dtx := 0
 	if use {
 		dtx = 1
 	}
-	C.bridge_set_dtx(enc.p, C.int(dtx))
+	C.bridge_encoder_set_dtx(enc.p, C.opus_int32(dtx))
 }
 
 func (enc *Encoder) DTX() bool {
-	dtx := C.bridge_get_dtx(enc.p)
+	dtx := C.bridge_encoder_get_dtx(enc.p)
 	return dtx != 0
 }
+
+func (enc *Encoder) SampleRate() int {
+	return int(C.bridge_encoder_get_sample_rate(enc.p))
+}
diff --git a/encoder_test.go b/encoder_test.go
index 69aa5e1e3c5fd3b35e013b817edb71394d87f396..b37489f8c6e15d34a6cf21276cbfd9e527910e38 100644
--- a/encoder_test.go
+++ b/encoder_test.go
@@ -6,7 +6,7 @@ package opus
 
 import "testing"
 
-func TestUseDTX(t *testing.T) {
+func TestEncoderDTX(t *testing.T) {
 	enc, err := NewEncoder(8000, 1, APPLICATION_VOIP)
 	if err != nil || enc == nil {
 		t.Errorf("Error creating new encoder: %v", err)
@@ -20,3 +20,17 @@ 			t.Errorf("Error set dtx: expect dtx=%v, got dtx=%v", dtx, gotv)
 		}
 	}
 }
+
+func TestEncoderSampleRate(t *testing.T) {
+	sample_rates := []int{8000, 12000, 16000, 24000, 48000}
+	for _, f := range sample_rates {
+		enc, err := NewEncoder(f, 1, APPLICATION_VOIP)
+		if err != nil || enc == nil {
+			t.Fatalf("Error creating new encoder with sample_rate %d Hz: %v", f, err)
+		}
+		f2 := enc.SampleRate()
+		if f != f2 {
+			t.Errorf("Unexpected sample rate reported by %d Hz encoder: %d", f, f2)
+		}
+	}
+}