diff --git a/examples/wchess/libwchess/WChess.h b/examples/wchess/libwchess/WChess.h
index 994d7a3b..2c89518e 100644
--- a/examples/wchess/libwchess/WChess.h
+++ b/examples/wchess/libwchess/WChess.h
@@ -26,8 +26,8 @@ public:
         int32_t vad_ms     = 2000;
         int32_t prompt_ms  = 5000;
         int32_t command_ms = 4000;
-        float vad_thold    = 0.1f;
-        float freq_thold   = -1.0f;
+        float vad_thold    = 0.2f;
+        float freq_thold   = 100.0f;
         bool print_energy  = false;
     };
 
diff --git a/examples/wchess/wchess.wasm/wchess.wasm.cpp b/examples/wchess/wchess.wasm/wchess.wasm.cpp
index 6a815958..6ce27464 100644
--- a/examples/wchess/wchess.wasm/wchess.wasm.cpp
+++ b/examples/wchess/wchess.wasm/wchess.wasm.cpp
@@ -44,10 +44,15 @@ void get_audio(int ms, std::vector<float> & audio) {
 }
 
 bool check_running() {
-    g_pcmf32.clear();
+    //g_pcmf32.clear();
     return g_running;
 }
 
+bool clear_audio() {
+    g_pcmf32.clear();
+    return true;
+}
+
 void wchess_main(size_t i) {
     struct whisper_full_params wparams = whisper_full_default_params(whisper_sampling_strategy::WHISPER_SAMPLING_GREEDY);
 
@@ -81,6 +86,7 @@ void wchess_main(size_t i) {
     cb.check_running = check_running;
     cb.get_audio = get_audio;
     cb.set_moves = set_moves;
+    cb.clear_audio = clear_audio;
 
     WChess(g_contexts[i], wparams, cb, {}).run();
     if (i < g_contexts.size()) {