diff --git a/rtc_plugins.cpp b/rtc_plugins.cpp
index abddff5..a891209 100644
--- a/rtc_plugins.cpp
+++ b/rtc_plugins.cpp
@@ -4,6 +4,7 @@
 
 
 #include "./util/RTCContext.h"
+namespace py = boost::python;
 
 int init(const char* selfUserId, const char* selfDisplayName, const char* selfRoomId, boost::python::object callback) {
     RTCContext::instance().setPyCallback(callback);
@@ -30,13 +31,14 @@ int initSend(const char* destRoomId, const int16_t destChannelIndex) {
         return -1;
     }
 }
-int sendCustomAudioData(const int16_t destChannelIndex, void* customData, int32_t sampleRate, uint64_t channelNum,
+int sendCustomAudioData(const int16_t destChannelIndex, py::object pyData, int32_t sampleRate, uint64_t channelNum,
                         uint64_t dataLen) {
+    PyObject* pyObj = pyData.ptr();
+    void* dataPtr = PyArray_DATA((PyArrayObject*)pyObj);
     return RTCContext::instance().sendCustomAudioData(destChannelIndex, customData, sampleRate, channelNum, dataLen);
 }
 
 BOOST_PYTHON_MODULE(rtc_plugins) {
-    namespace py = boost::python;
     py::def("init", &init);
     py::def("initRecv", &initRecv);
     py::def("initSend", &initSend);