update sound

examples/companion_radio/UITask.cpp

@@ -88,7 +88,7 @@ switch(bet){
     buzzer.play("kerplop:d=16,o=6,b=120:32g#,32c#");
     break;
   case UIEventType::ack:
-    buzzer.play("ack:d=32,o=7,b=120:c");
+    buzzer.play("ack:d=32,o=8,b=120:c");
     break;
   case UIEventType::roomMessage:
   case UIEventType::newContactMessage: