diff --git a/analyze.py b/analyze.py
index cdd2f45d..7a5a7919 100644
--- a/analyze.py
+++ b/analyze.py
@@ -52,6 +52,12 @@ def saveResultFile(r: dict[str, list], path: str, afile_path: str):
         # Write header
         out_string += header
 
+        # Read native sample rate
+        high_freq = audio.get_sample_rate(afile_path) / 2
+
+        if high_freq > cfg.SIG_FMAX:
+            high_freq = cfg.SIG_FMAX
+
         # Extract valid predictions for every timestamp
         for timestamp in getSortedTimestamps(r):
             rstring = ""
@@ -65,8 +71,8 @@ def saveResultFile(r: dict[str, list], path: str, afile_path: str):
                         selection_id,
                         start,
                         end,
-                        150,
-                        15000,
+                        cfg.SIG_FMIN,
+                        high_freq,
                         cfg.CODES[c[0]] if c[0] in cfg.CODES else c[0],
                         label.split("_", 1)[-1],
                         c[1],
diff --git a/audio.py b/audio.py
index 853df91f..d2e0b273 100644
--- a/audio.py
+++ b/audio.py
@@ -29,6 +29,11 @@ def openAudioFile(path: str, sample_rate=48000, offset=0.0, duration=None):
     return sig, rate
 
 
+def get_sample_rate(path: str):
+    import librosa
+    return librosa.get_samplerate(path)
+
+
 def saveSignal(sig, fname: str):
     """Saves a signal to file.