diff --git a/src/buzzer.rs b/src/buzzer.rs
index 2cdd6ab..d00b608 100644
--- a/src/buzzer.rs
+++ b/src/buzzer.rs
@@ -34,7 +34,26 @@ impl GPIOBuzzer {
     }
 
     pub async fn beep_ack(&mut self) -> Result<(), Box<dyn Error>>{
+        let sleep_ms: u64 = 10;
+
+        self.modulated_tone(1200.0, 100).await?;
+        sleep(Duration::from_millis(sleep_ms)).await;
+        self.modulated_tone(2000.0,50).await?;
+        Ok(())
+    }
+
+    pub async fn beep_nak(&mut self) -> Result<(), Box<dyn Error>>{
         let sleep_ms: u64 = 100;
+
+        self.modulated_tone(600.0, 150).await?;
+        sleep(Duration::from_millis(sleep_ms)).await;
+        self.modulated_tone(600.0,150).await?;
+        Ok(())
+    }
+
+    pub async fn beep_unnkown(&mut self) -> Result<(), Box<dyn Error>>{
+        let sleep_ms: u64 = 100;
+
         self.modulated_tone(750.0, 100).await?;
         sleep(Duration::from_millis(sleep_ms)).await;
         self.modulated_tone(1200.0,100).await?;
@@ -42,20 +61,4 @@ impl GPIOBuzzer {
         self.modulated_tone(2300.0,100).await?;
         Ok(())
     }
-
-    pub async fn beep_nak(&mut self) -> Result<(), Box<dyn Error>>{
-        self.modulated_tone(2300.0,100).await?;
-        self.modulated_tone(2300.0,100).await?;
-        Ok(())
-    }
-
-    pub async fn beep_unnkown(&mut self) -> Result<(), Box<dyn Error>>{
-        let sleep_ms: u64 = 100;
-        self.modulated_tone(2300.0,100).await?;
-        sleep(Duration::from_millis(sleep_ms)).await;
-        self.modulated_tone(2300.0,100).await?;
-        sleep(Duration::from_millis(sleep_ms)).await;
-        self.modulated_tone(2300.0,100).await?;
-        Ok(())
-    }
 }