diff --git a/sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/audiohw.xc b/sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/audiohw.xc
index cdb5ec5..15143c8 100644
--- a/sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/audiohw.xc
+++ b/sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/audiohw.xc
@@ -362,6 +362,7 @@ unsigned g_windows_detect_done = 0;
 extern unsigned g_host_os;  // 1 -> Windows, 2 -> Others
 extern unsigned g_mute_on_off_t0;
 extern unsigned g_uac_vol;
+#define DNR_STRENGTH_off 10
 extern void dnr_set_mode(unsigned char mode);
 extern void dnr_set_strength_level(unsigned char strength);
 
@@ -918,7 +919,7 @@ void button_task(chanend c_hidSendData, chanend cc_mic_level, chanend c_uac_vol,
         led_off(&led_ctx, LED_ANC);
         led_update_all(&led_ctx);
         dnr_set_mode(1);
-        dnr_set_strength_level(0);
+        dnr_set_strength_level(DNR_STRENGTH_off);
     }
 #endif
 
@@ -1688,7 +1689,7 @@ void button_task(chanend c_hidSendData, chanend cc_mic_level, chanend c_uac_vol,
                     {
                         // 改动原因：关时只清开关与算法档位，保留g_dnr_strength供HID 0x86与再次开启
                         led_off(&led_ctx, LED_ANC);
-                        dnr_set_strength_level(0);
+                        dnr_set_strength_level(DNR_STRENGTH_off);
                         SET_SHARED_GLOBAL(g_dnr_on, 0);
                     }
                     save_value(dnr_on_path, (unsigned char)flag_aidenoise_onoff);
@@ -2134,7 +2135,7 @@ void button_task(chanend c_hidSendData, chanend cc_mic_level, chanend c_uac_vol,
                             dnr_strength_saved = new_strength;
                             led_on(&led_ctx, LED_ANC);
                         } else {
-                            dnr_set_strength_level(0);
+                            dnr_set_strength_level(DNR_STRENGTH_off);
                             flag_aidenoise_onoff = 0;
                             led_off(&led_ctx, LED_ANC);
                         }