diff --git a/android/src/services/audio.ts b/android/src/services/audio.ts
index 59c9c2a..59db530 100644
--- a/android/src/services/audio.ts
+++ b/android/src/services/audio.ts
@@ -388,11 +388,22 @@ class AudioService {
           if (db > -100) {
             this.vadBaselineSamples.push(db);
             if (this.vadBaselineSamples.length === VAD_BASELINE_SAMPLES) {
-              const avg = this.vadBaselineSamples.reduce((a, b) => a + b, 0) / VAD_BASELINE_SAMPLES;
-              this.vadAdaptiveSilenceDb = avg + VAD_SILENCE_OFFSET_DB;
-              this.vadAdaptiveSpeechDb = avg + VAD_SPEECH_OFFSET_DB;
-              const msg = `VAD: ambient=${avg.toFixed(0)}dB stille>${this.vadAdaptiveSilenceDb.toFixed(0)}dB`;
-              console.log('[Audio] %s speech>%s', msg, this.vadAdaptiveSpeechDb.toFixed(1));
+              // Minimum statt Mittelwert: robust gegen Spike-Samples (z.B. wenn
+              // der User direkt nach Wake-Word sofort spricht oder das Wake-Word-
+              // Echo noch im Mikro ist). Min ist der ruhigste Moment.
+              const lowest = Math.min(...this.vadBaselineSamples);
+              const rawSilence = lowest + VAD_SILENCE_OFFSET_DB;
+              const rawSpeech = lowest + VAD_SPEECH_OFFSET_DB;
+              // Cap auf einen vernuenftigen Bereich:
+              // - Silence-Schwelle nicht ueber -28dB (sonst zaehlt Hintergrund-
+              //   geraeusch dauerhaft als "Sprache" → VAD feuert nie)
+              // - Silence-Schwelle nicht unter -50dB (sonst zu strikt)
+              this.vadAdaptiveSilenceDb = Math.max(-50, Math.min(rawSilence, -28));
+              this.vadAdaptiveSpeechDb = Math.max(-40, Math.min(rawSpeech, -18));
+              const msg = `VAD: ambient=${lowest.toFixed(0)}dB stille>${this.vadAdaptiveSilenceDb.toFixed(0)}dB`;
+              console.log('[Audio] %s speech>%s (raw silence=%s speech=%s)',
+                          msg, this.vadAdaptiveSpeechDb.toFixed(1),
+                          rawSilence.toFixed(1), rawSpeech.toFixed(1));
               try { ToastAndroid.show(msg, ToastAndroid.SHORT); } catch {}
             }
           }