diff --git a/log.capnp b/log.capnp
index 4fe69a2..af0f696 100644
--- a/log.capnp
+++ b/log.capnp
@@ -1962,8 +1962,11 @@ struct UserFlag {
 }
 
 struct Microphone {
-  ambientNoiseLevelRaw @0 :Float32;
-  filteredAmbientNoiseLevel @1 :Float32;
+  soundPressure @0 :Float32;
+
+  # uncalibrated
+  soundPressureDb @1 :Float32;
+  filteredSoundPressureDb @2 :Float32;
 }
 
 struct Event {