diff --git a/demo/audio_v1_mic_multichan_template.c b/demo/audio_v1_mic_multichan_template.c
index 9e4e85dd..94ca950c 100644
--- a/demo/audio_v1_mic_multichan_template.c
+++ b/demo/audio_v1_mic_multichan_template.c
@@ -220,6 +220,7 @@ const uint8_t audio_v1_descriptor[] = {
 
 volatile bool tx_flag = 0;
 volatile bool ep_tx_busy_flag = false;
+volatile uint32_t s_mic_sample_rate;
 
 static void usbd_event_handler(uint8_t busid, uint8_t event)
 {
@@ -260,6 +261,26 @@ void usbd_audio_close(uint8_t busid, uint8_t intf)
     tx_flag = 0;
 }
 
+void usbd_audio_set_sampling_freq(uint8_t busid, uint8_t ep, uint32_t sampling_freq)
+{
+    if (ep == AUDIO_IN_EP) {
+        s_mic_sample_rate = sampling_freq;
+    }
+}
+
+uint32_t usbd_audio_get_sampling_freq(uint8_t busid, uint8_t ep)
+{
+    (void)busid;
+
+    uint32_t freq = 0;
+
+    if (ep == AUDIO_IN_EP) {
+        freq = s_mic_sample_rate;
+    }
+
+    return freq;
+}
+
 void usbd_audio_iso_callback(uint8_t busid, uint8_t ep, uint32_t nbytes)
 {
     USB_LOG_RAW("actual in len:%d\r\n", (unsigned int)nbytes);
diff --git a/demo/audio_v1_mic_speaker_multichan_template.c b/demo/audio_v1_mic_speaker_multichan_template.c
index 547641ab..c764ee93 100644
--- a/demo/audio_v1_mic_speaker_multichan_template.c
+++ b/demo/audio_v1_mic_speaker_multichan_template.c
@@ -258,6 +258,8 @@ USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t s_speaker_feedback_buffer[4];
 volatile bool tx_flag = 0;
 volatile bool rx_flag = 0;
 volatile bool ep_tx_busy_flag = false;
+volatile uint32_t s_mic_sample_rate;
+volatile uint32_t s_speaker_sample_rate;
 
 static void usbd_event_handler(uint8_t busid, uint8_t event)
 {
@@ -291,7 +293,7 @@ void usbd_audio_open(uint8_t busid, uint8_t intf)
         /* setup first out ep read transfer */
         usbd_ep_start_read(busid, AUDIO_OUT_EP, read_buffer, AUDIO_OUT_PACKET);
 #if USING_FEEDBACK == 1
-        uint32_t feedback_value = AUDIO_FREQ_TO_FEEDBACK_FS(AUDIO_SPEAKER_FREQ);
+        uint32_t feedback_value = AUDIO_FREQ_TO_FEEDBACK_FS(s_speaker_sample_rate);
         AUDIO_FEEDBACK_TO_BUF_FS(s_speaker_feedback_buffer, feedback_value); /* uac1 can only use 10.14 */
         usbd_ep_start_write(busid, AUDIO_OUT_FEEDBACK_EP, s_speaker_feedback_buffer, FEEDBACK_ENDP_PACKET_SIZE);
 #endif
@@ -315,6 +317,30 @@ void usbd_audio_close(uint8_t busid, uint8_t intf)
     }
 }
 
+void usbd_audio_set_sampling_freq(uint8_t busid, uint8_t ep, uint32_t sampling_freq)
+{
+    if (ep == AUDIO_OUT_EP) {
+        s_speaker_sample_rate = sampling_freq;
+    } else if (ep == AUDIO_IN_EP) {
+        s_mic_sample_rate = sampling_freq;
+    }
+}
+
+uint32_t usbd_audio_get_sampling_freq(uint8_t busid, uint8_t ep)
+{
+    (void)busid;
+
+    uint32_t freq = 0;
+
+    if (ep == AUDIO_OUT_EP) {
+        freq = s_speaker_sample_rate;
+    } else if (ep == AUDIO_IN_EP) {
+        freq = s_mic_sample_rate;
+    }
+
+    return freq;
+}
+
 void usbd_audio_out_callback(uint8_t busid, uint8_t ep, uint32_t nbytes)
 {
     USB_LOG_RAW("actual out len:%d\r\n", (unsigned int)nbytes);
@@ -331,7 +357,7 @@ void usbd_audio_in_callback(uint8_t busid, uint8_t ep, uint32_t nbytes)
 void usbd_audio_iso_out_feedback_callback(uint8_t busid, uint8_t ep, uint32_t nbytes)
 {
     USB_LOG_RAW("actual feedback len:%d\r\n", (unsigned int)nbytes);
-    uint32_t feedback_value = AUDIO_FREQ_TO_FEEDBACK_FS(AUDIO_SPEAKER_FREQ);
+    uint32_t feedback_value = AUDIO_FREQ_TO_FEEDBACK_FS(s_speaker_sample_rate);
     AUDIO_FEEDBACK_TO_BUF_FS(s_speaker_feedback_buffer, feedback_value);
     usbd_ep_start_write(busid, AUDIO_OUT_FEEDBACK_EP, s_speaker_feedback_buffer, FEEDBACK_ENDP_PACKET_SIZE);
 }
diff --git a/demo/audio_v2_mic_multichan_template.c b/demo/audio_v2_mic_multichan_template.c
index 8c25f25b..cd6e9b15 100644
--- a/demo/audio_v2_mic_multichan_template.c
+++ b/demo/audio_v2_mic_multichan_template.c
@@ -235,6 +235,7 @@ USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t write_buffer[AUDIO_IN_PACKET];
 
 volatile bool tx_flag = 0;
 volatile bool ep_tx_busy_flag = false;
+volatile uint32_t s_mic_sample_rate;
 
 static void usbd_event_handler(uint8_t busid, uint8_t event)
 {
@@ -273,6 +274,26 @@ void usbd_audio_close(uint8_t busid, uint8_t intf)
     tx_flag = 0;
 }
 
+void usbd_audio_set_sampling_freq(uint8_t busid, uint8_t ep, uint32_t sampling_freq)
+{
+    if (ep == AUDIO_IN_EP) {
+        s_mic_sample_rate = sampling_freq;
+    }
+}
+
+uint32_t usbd_audio_get_sampling_freq(uint8_t busid, uint8_t ep)
+{
+    (void)busid;
+
+    uint32_t freq = 0;
+
+    if (ep == AUDIO_IN_EP) {
+        freq = s_mic_sample_rate;
+    }
+
+    return freq;
+}
+
 void usbd_audio_get_sampling_freq_table(uint8_t busid, uint8_t ep, uint8_t **sampling_freq_table)
 {
     if (ep == AUDIO_IN_EP) {
diff --git a/demo/audio_v2_mic_speaker_multichan_template.c b/demo/audio_v2_mic_speaker_multichan_template.c
index d96916c5..ce77c302 100644
--- a/demo/audio_v2_mic_speaker_multichan_template.c
+++ b/demo/audio_v2_mic_speaker_multichan_template.c
@@ -342,6 +342,8 @@ USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t write_buffer[AUDIO_IN_PACKET];
 volatile bool tx_flag = 0;
 volatile bool rx_flag = 0;
 volatile bool ep_tx_busy_flag = false;
+volatile uint32_t s_mic_sample_rate;
+volatile uint32_t s_speaker_sample_rate;
 
 static void usbd_event_handler(uint8_t busid, uint8_t event)
 {
@@ -402,6 +404,30 @@ void usbd_audio_close(uint8_t busid, uint8_t intf)
     }
 }
 
+void usbd_audio_set_sampling_freq(uint8_t busid, uint8_t ep, uint32_t sampling_freq)
+{
+    if (ep == AUDIO_OUT_EP) {
+        s_speaker_sample_rate = sampling_freq;
+    } else if (ep == AUDIO_IN_EP) {
+        s_mic_sample_rate = sampling_freq;
+    }
+}
+
+uint32_t usbd_audio_get_sampling_freq(uint8_t busid, uint8_t ep)
+{
+    (void)busid;
+
+    uint32_t freq = 0;
+
+    if (ep == AUDIO_OUT_EP) {
+        freq = s_speaker_sample_rate;
+    } else if (ep == AUDIO_IN_EP) {
+        freq = s_mic_sample_rate;
+    }
+
+    return freq;
+}
+
 void usbd_audio_get_sampling_freq_table(uint8_t busid, uint8_t ep, uint8_t **sampling_freq_table)
 {
     if (ep == AUDIO_OUT_EP) {
@@ -429,10 +455,10 @@ void usbd_audio_iso_out_feedback_callback(uint8_t busid, uint8_t ep, uint32_t nb
 {
     USB_LOG_RAW("actual feedback len:%d\r\n", nbytes);
 #ifdef CONFIG_USB_HS
-    uint32_t feedback_value = AUDIO_FREQ_TO_FEEDBACK_HS(AUDIO_FREQ);
+    uint32_t feedback_value = AUDIO_FREQ_TO_FEEDBACK_HS(s_speaker_sample_rate);
     AUDIO_FEEDBACK_TO_BUF_HS(s_speaker_feedback_buffer, feedback_value);
 #else
-    uint32_t feedback_value = AUDIO_FREQ_TO_FEEDBACK_FS(AUDIO_FREQ);
+    uint32_t feedback_value = AUDIO_FREQ_TO_FEEDBACK_FS(s_speaker_sample_rate);
     AUDIO_FEEDBACK_TO_BUF_FS(s_speaker_feedback_buffer, feedback_value);
 #endif
     usbd_ep_start_write(busid, AUDIO_OUT_FEEDBACK_EP, s_speaker_feedback_buffer, FEEDBACK_ENDP_PACKET_SIZE);
diff --git a/demo/audio_v2_speaker_multichan_template.c b/demo/audio_v2_speaker_multichan_template.c
index 9f0de4c7..e89c8808 100644
--- a/demo/audio_v2_speaker_multichan_template.c
+++ b/demo/audio_v2_speaker_multichan_template.c
@@ -274,6 +274,7 @@ USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t read_buffer[AUDIO_OUT_PACKET];
 USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t s_speaker_feedback_buffer[4];
 
 volatile bool rx_flag = 0;
+volatile uint32_t s_speaker_sample_rate;
 
 static void usbd_event_handler(uint8_t busid, uint8_t event)
 {
@@ -307,10 +308,10 @@ void usbd_audio_open(uint8_t busid, uint8_t intf)
     usbd_ep_start_read(busid, AUDIO_OUT_EP, read_buffer, AUDIO_OUT_PACKET);
 #if USING_FEEDBACK == 1
 #ifdef CONFIG_USB_HS
-    uint32_t feedback_value = AUDIO_FREQ_TO_FEEDBACK_HS(AUDIO_FREQ);
+    uint32_t feedback_value = AUDIO_FREQ_TO_FEEDBACK_HS(s_speaker_sample_rate);
     AUDIO_FEEDBACK_TO_BUF_HS(s_speaker_feedback_buffer, feedback_value);
 #else
-    uint32_t feedback_value = AUDIO_FREQ_TO_FEEDBACK_FS(AUDIO_FREQ);
+    uint32_t feedback_value = AUDIO_FREQ_TO_FEEDBACK_FS(s_speaker_sample_rate);
     AUDIO_FEEDBACK_TO_BUF_FS(s_speaker_feedback_buffer, feedback_value);
 #endif
     usbd_ep_start_write(busid, AUDIO_OUT_FEEDBACK_EP, s_speaker_feedback_buffer, FEEDBACK_ENDP_PACKET_SIZE);
@@ -324,6 +325,26 @@ void usbd_audio_close(uint8_t busid, uint8_t intf)
     rx_flag = 0;
 }
 
+void usbd_audio_set_sampling_freq(uint8_t busid, uint8_t ep, uint32_t sampling_freq)
+{
+    if (ep == AUDIO_OUT_EP) {
+        s_speaker_sample_rate = sampling_freq;
+    }
+}
+
+uint32_t usbd_audio_get_sampling_freq(uint8_t busid, uint8_t ep)
+{
+    (void)busid;
+
+    uint32_t freq = 0;
+
+    if (ep == AUDIO_OUT_EP) {
+        freq = s_speaker_sample_rate;
+    }
+
+    return freq;
+}
+
 void usbd_audio_get_sampling_freq_table(uint8_t busid, uint8_t ep, uint8_t **sampling_freq_table)
 {
     if (ep == AUDIO_OUT_EP) {
@@ -342,10 +363,10 @@ void usbd_audio_iso_out_feedback_callback(uint8_t busid, uint8_t ep, uint32_t nb
 {
     USB_LOG_RAW("actual feedback len:%d\r\n", (unsigned int)nbytes);
 #ifdef CONFIG_USB_HS
-    uint32_t feedback_value = AUDIO_FREQ_TO_FEEDBACK_HS(AUDIO_FREQ);
+    uint32_t feedback_value = AUDIO_FREQ_TO_FEEDBACK_HS(s_speaker_sample_rate);
     AUDIO_FEEDBACK_TO_BUF_HS(s_speaker_feedback_buffer, feedback_value);
 #else
-    uint32_t feedback_value = AUDIO_FREQ_TO_FEEDBACK_FS(AUDIO_FREQ);
+    uint32_t feedback_value = AUDIO_FREQ_TO_FEEDBACK_FS(s_speaker_sample_rate);
     AUDIO_FEEDBACK_TO_BUF_FS(s_speaker_feedback_buffer, feedback_value);
 #endif
     usbd_ep_start_write(busid, AUDIO_OUT_FEEDBACK_EP, s_speaker_feedback_buffer, FEEDBACK_ENDP_PACKET_SIZE);