diff --git a/process b/process
index 50a2d3f..0eb503c 100755
--- a/process
+++ b/process
@@ -22,7 +22,7 @@ AMPLITUDE_THRESHOLD = 200 # relative DB (rDB) (because not calibrated)
 BLOCK_SECONDS = 3 # seconds (longer means more frequency resolution, but less time resolution)
 DETECTION_DISTANCE = 30 # seconds (minimum time between detections)
 BLOCK_OVERLAP_FACTOR = 0.8 # overlap between blocks (0.8 means 80% overlap)
-
+MAX_NOISE = 0.1 # maximum noise level (relative DB) to consider a detection valid
 
 def process_recording(filename):
     print('processing', filename)
@@ -67,7 +67,7 @@ def process_recording(filename):
         # check for detection criteria
         max_freq_detected = DETECT_FREQUENCY_FROM <= max_freq <= DETECT_FREQUENCY_TO
         amplitude_detected = max_amplitude > AMPLITUDE_THRESHOLD
-        low_noise_detected = noise < 0.1
+        low_noise_detected = noise < MAX_NOISE
 
         # conclude detection
         if (