release: bump version to 0.0.5.1

XTTS-Bridge:
  - empfaengt neuen voice_preload Type, rendert stumm "ja." fuer die Stimme
    via TTS-Queue (damit kein Konflikt mit echtem TTS)
  - horcht zusaetzlich auf config-Broadcasts: wenn Diagnostic global die
    Stimme wechselt, wird auto-preloaded
  - broadcastet voice_ready mit Dauer (loadMs) oder error

RVS: voice_preload + voice_ready zur ALLOWED_TYPES-Liste.

App (SettingsScreen): beim Wechsel senden wir voice_preload, zeigen einen
Spinner in der Voice-Row und einen Toast mit "Stimme X bereit (Ns)".
App (ChatScreen): Toast auch hier — falls User gerade nicht in Settings ist.

Diagnostic (server+UI): voice_ready wird an Browser durchgereicht, ein
Status-Text unter dem Voice-Dropdown zeigt "wird geladen" → "bereit".

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

android/android/app/build.gradle

@@ -79,8 +79,8 @@ android {
         applicationId "com.ariacockpit"
         minSdkVersion rootProject.ext.minSdkVersion
         targetSdkVersion rootProject.ext.targetSdkVersion
-        versionCode 406
-        versionName "0.0.4.6"
+        versionCode 501
+        versionName "0.0.5.1"
         // Fallback fuer Libraries mit Product Flavors
         missingDimensionStrategy 'react-native-camera', 'general'
     }

android/android/app/src/main/java/com/ariacockpit/PcmStreamPlayerModule.kt

@@ -30,9 +30,13 @@ import java.util.concurrent.LinkedBlockingQueue
 class PcmStreamPlayerModule(reactContext: ReactApplicationContext) : ReactContextBaseJavaModule(reactContext) {
     companion object {
         private const val TAG = "PcmStreamPlayer"
-        // Sekunden Audio die VOR play()-Start gepuffert sein muessen.
-        // 2.5s Vorrat = genug um XTTS-Render-Pausen zwischen Chunks zu puffern.
-        private const val PREROLL_SECONDS = 2.5
+        // Fallback wenn JS keinen Wert uebergibt.
+        private const val DEFAULT_PREROLL_SECONDS = 3.5
+        private const val MIN_PREROLL_SECONDS = 0.5
+        private const val MAX_PREROLL_SECONDS = 10.0
+        // Stille am Stream-Anfang, damit AudioTrack sauber anfaehrt und die
+        // ersten Samples nicht abgeschnitten werden (XTTS-Warmup + play()-Latenz).
+        private const val LEADING_SILENCE_SECONDS = 0.2
     }
 
     override fun getName() = "PcmStreamPlayer"
@@ -50,17 +54,21 @@ class PcmStreamPlayerModule(reactContext: ReactApplicationContext) : ReactContex
     // ── Lifecycle ──
 
     @ReactMethod
-    fun start(sampleRate: Int, channels: Int, promise: Promise) {
+    fun start(sampleRate: Int, channels: Int, prerollSeconds: Double, promise: Promise) {
         try {
             // Alte Session beenden falls vorhanden
             stopInternal()
 
+            val prerollSec = prerollSeconds
+                .coerceIn(MIN_PREROLL_SECONDS, MAX_PREROLL_SECONDS)
+                .let { if (it.isFinite() && it > 0) it else DEFAULT_PREROLL_SECONDS }
+
             val channelConfig = if (channels == 2) AudioFormat.CHANNEL_OUT_STEREO else AudioFormat.CHANNEL_OUT_MONO
             val encoding = AudioFormat.ENCODING_PCM_16BIT
             val minBuf = AudioTrack.getMinBufferSize(sampleRate, channelConfig, encoding)
             val bytesPerSecond = sampleRate * channels * 2 // 16-bit = 2 bytes
             // Buffer muss mindestens PREROLL + etwas Spielraum fassen.
-            val prerollTarget = (bytesPerSecond * PREROLL_SECONDS).toInt()
+            val prerollTarget = (bytesPerSecond * prerollSec).toInt()
             val bufferSize = (minBuf * 32).coerceAtLeast(prerollTarget * 2)
             prerollBytes = prerollTarget
             bytesBuffered = 0
@@ -94,6 +102,18 @@ class PcmStreamPlayerModule(reactContext: ReactApplicationContext) : ReactContex
             writerThread = Thread({
                 val t = track ?: return@Thread
                 try {
+                    // Leading-Silence in den Buffer — gibt AudioTrack Zeit anzufahren.
+                    val silenceBytes = ((sampleRate * channels * 2) * LEADING_SILENCE_SECONDS).toInt() and 0x7FFFFFFE
+                    if (silenceBytes > 0) {
+                        val silence = ByteArray(silenceBytes)
+                        var silOff = 0
+                        while (silOff < silence.size && !writerShouldStop) {
+                            val w = t.write(silence, silOff, silence.size - silOff)
+                            if (w <= 0) break
+                            silOff += w
+                        }
+                        bytesBuffered += silence.size
+                    }
                     while (!writerShouldStop) {
                         val data = queue.poll(50, java.util.concurrent.TimeUnit.MILLISECONDS) ?: run {
                             if (endRequested) {
@@ -158,7 +178,7 @@ class PcmStreamPlayerModule(reactContext: ReactApplicationContext) : ReactContex
                 }
             }, "PcmStreamWriter").apply { start() }
 
-            Log.i(TAG, "Stream gestartet: ${sampleRate}Hz ch=$channels buf=${bufferSize}B preroll=${prerollBytes}B")
+            Log.i(TAG, "Stream gestartet: ${sampleRate}Hz ch=$channels buf=${bufferSize}B preroll=${prerollBytes}B (${prerollSec}s)")
             promise.resolve(true)
         } catch (e: Exception) {
             Log.e(TAG, "start fehlgeschlagen", e)

android/package.json

@@ -1,6 +1,6 @@
 {
   "name": "aria-cockpit",
-  "version": "0.0.4.6",
+  "version": "0.0.5.1",
   "private": true,
   "scripts": {
     "android": "react-native run-android",

android/src/screens/ChatScreen.tsx

@@ -18,6 +18,7 @@ import {
   Image,
   ScrollView,
   Modal,
+  ToastAndroid,
 } from 'react-native';
 import AsyncStorage from '@react-native-async-storage/async-storage';
 import RNFS from 'react-native-fs';
@@ -325,6 +326,26 @@ const ChatScreen: React.FC = () => {
         const tool = (message.payload.tool as string) || '';
         setAgentActivity({ activity, tool });
       }
+
+      // Voice-Config aus Diagnostic — setzt die lokale App-Stimme auf den
+      // gerade in Diagnostic gewaehlten Wert zurueck. User-Wahl in der App
+      // wird dadurch ueberschrieben.
+      if (message.type === ('config' as any)) {
+        const newVoice = ((message.payload as any).xttsVoice as string) ?? '';
+        localXttsVoiceRef.current = newVoice;
+        AsyncStorage.setItem('aria_xtts_voice', newVoice);
+      }
+
+      // XTTS-Bridge meldet Stimme fertig geladen (kurzer Status-Toast)
+      if (message.type === ('voice_ready' as any)) {
+        const v = ((message.payload as any).voice as string) ?? '';
+        const err = (message.payload as any).error as string | undefined;
+        if (err) {
+          ToastAndroid.show(`Stimme "${v}" Fehler: ${err}`, ToastAndroid.LONG);
+        } else {
+          ToastAndroid.show(`Stimme "${v || 'Standard'}" bereit`, ToastAndroid.SHORT);
+        }
+      }
     });
 
     const unsubState = rvs.onStateChange((state) => {

android/src/screens/SettingsScreen.tsx

@@ -15,11 +15,19 @@ import {
   StyleSheet,
   Alert,
   Platform,
+  ToastAndroid,
+  ActivityIndicator,
 } from 'react-native';
 import AsyncStorage from '@react-native-async-storage/async-storage';
 import RNFS from 'react-native-fs';
 import DocumentPicker from 'react-native-document-picker';
 import rvs, { ConnectionState, RVSMessage, ConnectionConfig, ConnectionLogEntry } from '../services/rvs';
+import {
+  TTS_PREROLL_DEFAULT_SEC,
+  TTS_PREROLL_MIN_SEC,
+  TTS_PREROLL_MAX_SEC,
+  TTS_PREROLL_STORAGE_KEY,
+} from '../services/audio';
 import ModeSelector from '../components/ModeSelector';
 import QRScanner from '../components/QRScanner';
 import VoiceCloneModal from '../components/VoiceCloneModal';
@@ -73,8 +81,10 @@ const SettingsScreen: React.FC = () => {
   const [autoDownload, setAutoDownload] = useState(true);
   const [storageSize, setStorageSize] = useState('...');
   const [ttsEnabled, setTtsEnabled] = useState(true);
+  const [ttsPrerollSec, setTtsPrerollSec] = useState<number>(TTS_PREROLL_DEFAULT_SEC);
   const [editingPath, setEditingPath] = useState(false);
   const [xttsVoice, setXttsVoice] = useState('');
+  const [loadingVoice, setLoadingVoice] = useState<string | null>(null);
   const [availableVoices, setAvailableVoices] = useState<Array<{name: string, size: number}>>([]);
   const [voiceCloneVisible, setVoiceCloneVisible] = useState(false);
   const [tempPath, setTempPath] = useState('');
@@ -99,6 +109,14 @@ const SettingsScreen: React.FC = () => {
     AsyncStorage.getItem('aria_tts_enabled').then(saved => {
       if (saved !== null) setTtsEnabled(saved === 'true');
     });
+    AsyncStorage.getItem(TTS_PREROLL_STORAGE_KEY).then(saved => {
+      if (saved != null) {
+        const n = parseFloat(saved);
+        if (isFinite(n) && n >= TTS_PREROLL_MIN_SEC && n <= TTS_PREROLL_MAX_SEC) {
+          setTtsPrerollSec(n);
+        }
+      }
+    });
     AsyncStorage.getItem('aria_xtts_voice').then(saved => {
       if (saved) setXttsVoice(saved);
     });
@@ -250,6 +268,31 @@ const SettingsScreen: React.FC = () => {
         }
         rvs.send('xtts_list_voices' as any, {});
       }
+
+      // Diagnostic-Voice-Wechsel → lokale App-Stimme auf den neuen Default zuruecksetzen.
+      // Zusaetzlich Preload triggern, damit der User weiss wann's geladen ist.
+      if (message.type === ('config' as any)) {
+        const newVoice = ((message.payload as any).xttsVoice as string) ?? '';
+        setXttsVoice(newVoice);
+        AsyncStorage.setItem('aria_xtts_voice', newVoice);
+        if (newVoice) {
+          setLoadingVoice(newVoice);
+        }
+      }
+
+      // XTTS-Bridge meldet: Stimme fertig geladen
+      if (message.type === ('voice_ready' as any)) {
+        const v = ((message.payload as any).voice as string) ?? '';
+        const err = (message.payload as any).error as string | undefined;
+        const ms = (message.payload as any).loadMs as number | undefined;
+        setLoadingVoice(null);
+        if (err) {
+          ToastAndroid.show(`Stimme "${v}" konnte nicht geladen werden: ${err}`, ToastAndroid.LONG);
+        } else {
+          const suffix = ms ? ` (${(ms / 1000).toFixed(1)}s)` : '';
+          ToastAndroid.show(`Stimme "${v || 'Standard'}" bereit${suffix}`, ToastAndroid.SHORT);
+        }
+      }
     });
 
     return () => {
@@ -318,6 +361,13 @@ const SettingsScreen: React.FC = () => {
   const selectVoice = useCallback((voiceName: string) => {
     setXttsVoice(voiceName);
     AsyncStorage.setItem('aria_xtts_voice', voiceName);
+    // Preload nur fuer Custom-Voices — "Standard" braucht keinen Ladevorgang
+    if (voiceName) {
+      setLoadingVoice(voiceName);
+      rvs.send('voice_preload' as any, { voice: voiceName, source: 'app' });
+    } else {
+      setLoadingVoice(null);
+    }
   }, []);
 
   const deleteVoice = useCallback((name: string) => {
@@ -527,6 +577,42 @@ const SettingsScreen: React.FC = () => {
           />
         </View>
 
+        {ttsEnabled && (
+          <View style={{marginTop: 20}}>
+            <Text style={styles.toggleLabel}>Puffer vor Wiedergabestart</Text>
+            <Text style={styles.toggleHint}>
+              Wie viel Audio gesammelt wird bevor die Wiedergabe startet.
+              Hoeher = robuster gegen Render-Pausen, aber mehr Startverzoegerung.
+              Default: {TTS_PREROLL_DEFAULT_SEC.toFixed(1)}s.
+            </Text>
+            <View style={styles.prerollRow}>
+              <TouchableOpacity
+                style={styles.prerollButton}
+                onPress={() => {
+                  const next = Math.max(TTS_PREROLL_MIN_SEC, Math.round((ttsPrerollSec - 0.5) * 10) / 10);
+                  setTtsPrerollSec(next);
+                  AsyncStorage.setItem(TTS_PREROLL_STORAGE_KEY, String(next));
+                }}
+                disabled={ttsPrerollSec <= TTS_PREROLL_MIN_SEC}
+              >
+                <Text style={styles.prerollButtonText}>−0.5</Text>
+              </TouchableOpacity>
+              <Text style={styles.prerollValue}>{ttsPrerollSec.toFixed(1)} s</Text>
+              <TouchableOpacity
+                style={styles.prerollButton}
+                onPress={() => {
+                  const next = Math.min(TTS_PREROLL_MAX_SEC, Math.round((ttsPrerollSec + 0.5) * 10) / 10);
+                  setTtsPrerollSec(next);
+                  AsyncStorage.setItem(TTS_PREROLL_STORAGE_KEY, String(next));
+                }}
+                disabled={ttsPrerollSec >= TTS_PREROLL_MAX_SEC}
+              >
+                <Text style={styles.prerollButtonText}>+0.5</Text>
+              </TouchableOpacity>
+            </View>
+          </View>
+        )}
+
         {ttsEnabled && (
           <View style={{marginTop: 20}}>
             <Text style={styles.toggleLabel}>Stimme (geraetelokal)</Text>
@@ -561,7 +647,10 @@ const SettingsScreen: React.FC = () => {
                     </Text>
                     <Text style={styles.voiceRowMeta}>{(v.size / 1024).toFixed(0)} KB</Text>
                   </TouchableOpacity>
-                  {xttsVoice === v.name && <Text style={styles.voiceRowCheck}>{'\u2713'}</Text>}
+                  {loadingVoice === v.name && (
+                    <ActivityIndicator size="small" color="#0096FF" style={{marginRight: 8}} />
+                  )}
+                  {xttsVoice === v.name && loadingVoice !== v.name && <Text style={styles.voiceRowCheck}>{'\u2713'}</Text>}
                   <TouchableOpacity onPress={() => deleteVoice(v.name)} style={styles.voiceRowDelete}>
                     <Text style={styles.voiceRowDeleteIcon}>X</Text>
                   </TouchableOpacity>
@@ -1118,6 +1207,34 @@ const styles = StyleSheet.create({
   bottomSpacer: {
     height: 40,
   },
+
+  prerollRow: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    justifyContent: 'center',
+    marginTop: 12,
+    gap: 16,
+  },
+  prerollButton: {
+    backgroundColor: '#2A2A3E',
+    paddingHorizontal: 18,
+    paddingVertical: 10,
+    borderRadius: 8,
+    minWidth: 72,
+    alignItems: 'center',
+  },
+  prerollButtonText: {
+    color: '#FFFFFF',
+    fontSize: 16,
+    fontWeight: '600',
+  },
+  prerollValue: {
+    color: '#FFFFFF',
+    fontSize: 20,
+    fontWeight: '700',
+    minWidth: 80,
+    textAlign: 'center',
+  },
 });
 
 export default SettingsScreen;

android/src/services/audio.ts

@@ -9,6 +9,7 @@
 import { Platform, PermissionsAndroid, NativeModules } from 'react-native';
 import Sound from 'react-native-sound';
 import RNFS from 'react-native-fs';
+import AsyncStorage from '@react-native-async-storage/async-storage';
 import AudioRecorderPlayer, {
   AudioEncoderAndroidType,
   AudioSourceAndroidType,
@@ -41,7 +42,7 @@ const { AudioFocus, PcmStreamPlayer } = NativeModules as {
     release: () => Promise<boolean>;
   };
   PcmStreamPlayer?: {
-    start: (sampleRate: number, channels: number) => Promise<boolean>;
+    start: (sampleRate: number, channels: number, prerollSeconds: number) => Promise<boolean>;
     writeChunk: (base64Pcm: string) => Promise<boolean>;
     end: () => Promise<boolean>;
     stop: () => Promise<boolean>;
@@ -80,6 +81,26 @@ const VAD_SPEECH_MIN_MS = 500;         // ms Sprache bevor Aufnahme zaehlt — l
 // Max-Dauer einer Aufnahme in Gespraechsmodus (Notbremse gegen Runaway-Loops)
 const MAX_RECORDING_MS = 30000;
 
+// Pre-Roll: Wie lange Audio im AudioTrack-Buffer liegt bevor play() startet.
+// Einstellbar via Diagnostic/Settings (Key: aria_tts_preroll_sec).
+export const TTS_PREROLL_DEFAULT_SEC = 3.5;
+export const TTS_PREROLL_MIN_SEC = 1.0;
+export const TTS_PREROLL_MAX_SEC = 6.0;
+export const TTS_PREROLL_STORAGE_KEY = 'aria_tts_preroll_sec';
+
+async function loadPrerollSec(): Promise<number> {
+  try {
+    const raw = await AsyncStorage.getItem(TTS_PREROLL_STORAGE_KEY);
+    if (raw != null) {
+      const n = parseFloat(raw);
+      if (isFinite(n) && n >= TTS_PREROLL_MIN_SEC && n <= TTS_PREROLL_MAX_SEC) {
+        return n;
+      }
+    }
+  } catch {}
+  return TTS_PREROLL_DEFAULT_SEC;
+}
+
 // --- Audio-Service ---
 
 class AudioService {
@@ -373,8 +394,9 @@ class AudioService {
       this.pcmBuffer = [];
       this.pcmBytesCollected = 0;
       if (!silent) {
+        const prerollSec = await loadPrerollSec();
         try {
-          await PcmStreamPlayer!.start(sampleRate, channels);
+          await PcmStreamPlayer!.start(sampleRate, channels, prerollSec);
         } catch (err) {
           console.error('[Audio] PcmStreamPlayer.start fehlgeschlagen:', err);
           this.pcmStreamActive = false;

bridge/aria_bridge.py

@@ -150,6 +150,15 @@ def _small_range_to_words(m):
     return f"{_num_to_words_de(a)} bis {_num_to_words_de(b)}"
 
 
+def _decimal_to_words(m):
+    """'0.1' / '0,1' → 'null komma eins', '1,25' → 'eins komma zwei fuenf'."""
+    int_part = int(m.group(1))
+    dec_part = m.group(2)
+    int_word = _num_to_words_de(int_part) if 0 <= int_part <= 59 else str(int_part)
+    dec_words = " ".join(_num_to_words_de(int(d)) for d in dec_part)
+    return f"{int_word} komma {dec_words}"
+
+
 _UNIT_WORDS = [
     (r'\bTB\b', 'Terabyte'),
     (r'\bGB\b', 'Gigabyte'),
@@ -236,6 +245,11 @@ def clean_text_for_tts(text: str) -> str:
     # Kleine Zahlen-Bereiche ohne "Uhr": "5-6" → "fuenf bis sechs"
     t = _re_tts.sub(r'\b(\d{1,2})\s*[-–]\s*(\d{1,2})\b', _small_range_to_words, t)
 
+    # Dezimalzahlen: "0.1" / "0,5" / "1,25" → "null komma eins" / "null komma fuenf" / ...
+    # Muss vor "Zahl+Einheit" laufen, sonst frisst die Unit-Regel den Nachkommaanteil.
+    # Lookahead verhindert Match auf IP-artigen Strings wie 192.168.1.1.
+    t = _re_tts.sub(r'\b(\d+)[.,](\d+)(?![.,\d])', _decimal_to_words, t)
+
     # Zahlen + Einheit: "22GB" → "22 Gigabyte" (Leerzeichen einfuegen)
     t = _re_tts.sub(r'(\d+)([A-Za-z]{1,4})\b', r'\1 \2', t)
 
@@ -243,6 +257,12 @@ def clean_text_for_tts(text: str) -> str:
     for pat, repl in _UNIT_WORDS:
         t = _re_tts.sub(pat, repl, t)
 
+    # Generisches Buchstabieren: alle verbleibenden 2-5-Zeichen-Grossbuchstaben-Woerter
+    # (XTTS, USB, DNS, JSON, HTML, ...) → "X T T S". Laeuft NACH der expliziten Liste,
+    # damit TTS/GPU/... schon aufgeloest sind. "WLAN"-artige, die als Wort gesprochen
+    # werden, koennen bei Bedarf explizit in _UNIT_WORDS uebersteuert werden.
+    t = _re_tts.sub(r'\b([A-Z]{2,5})\b', lambda m: " ".join(m.group(1)), t)
+
     # Anfuehrungszeichen
     t = _re_tts.sub(r'["""„`]', '', t)
 

diagnostic/index.html

@@ -438,13 +438,14 @@
         </div>
 
         <!-- XTTS Stimme -->
-        <div style="display:flex;align-items:center;gap:12px;margin-bottom:12px;">
+        <div style="display:flex;align-items:center;gap:12px;margin-bottom:6px;">
           <label style="color:#8888AA;font-size:12px;">XTTS Stimme:</label>
           <select id="diag-xtts-voice" onchange="sendVoiceConfig()" style="background:#1E1E2E;color:#fff;border:1px solid #2A2A3E;border-radius:6px;padding:6px 10px;font-size:13px;">
             <option value="">Standard (XTTS Default)</option>
           </select>
           <button class="btn secondary" onclick="loadXTTSVoices()" style="padding:4px 10px;font-size:11px;">Laden</button>
         </div>
+        <div id="voice-status" style="font-size:11px;min-height:14px;margin-bottom:12px;color:#8888AA;"></div>
 
         <!-- Gecloned Stimmen — Liste mit Loeschen -->
         <div id="xtts-voice-list" style="margin-bottom:12px;"></div>
@@ -851,6 +852,25 @@
           return;
         }
 
+        if (msg.type === 'voice_ready') {
+          const v = msg.payload?.voice || '';
+          const err = msg.payload?.error;
+          const ms = msg.payload?.loadMs;
+          const statusEl = document.getElementById('voice-status');
+          if (statusEl) {
+            if (err) {
+              statusEl.textContent = `⚠️ Stimme "${v}" Fehler: ${err}`;
+              statusEl.style.color = '#FF3B30';
+            } else {
+              statusEl.textContent = `✅ Stimme "${v || 'Standard'}" bereit${ms ? ` (${(ms/1000).toFixed(1)}s)` : ''}`;
+              statusEl.style.color = '#34C759';
+            }
+            setTimeout(() => { if (statusEl) statusEl.textContent = ''; }, 5000);
+          }
+          addLog('info', 'xtts', err ? `Voice "${v}": ${err}` : `Voice "${v || 'Standard'}" bereit`);
+          return;
+        }
+
         if (msg.type === 'watchdog') {
           const colors = { warning: '#FFD60A', fixing: '#FF9500', fixed: '#34C759', error: '#FF3B30' };
           const color = colors[msg.status] || '#FFD60A';
@@ -1551,6 +1571,11 @@
       const xttsVoice = document.getElementById('diag-xtts-voice').value;
       const whisperModel = document.getElementById('diag-whisper-model').value;
       send({ action: 'send_voice_config', ttsEnabled, xttsVoice, whisperModel });
+      const statusEl = document.getElementById('voice-status');
+      if (statusEl && xttsVoice) {
+        statusEl.textContent = `⏳ Stimme "${xttsVoice}" wird geladen...`;
+        statusEl.style.color = '#FFD60A';
+      }
     }
 
     // ── Passwort-Feld Anzeigen/Verbergen ─────────────────────

diagnostic/server.js

@@ -626,6 +626,17 @@ function connectRVS(forcePlain) {
         // Mode-Broadcast von der Bridge → an Browser-Clients weiterreichen
         log("info", "rvs", `Mode-Broadcast: ${msg.payload?.mode} (${msg.payload?.name})`);
         broadcast({ type: "mode", payload: msg.payload });
+      } else if (msg.type === "voice_ready") {
+        // XTTS-Bridge meldet Stimme fertig geladen → an Browser durchreichen
+        const v = msg.payload?.voice || "";
+        const err = msg.payload?.error;
+        const ms = msg.payload?.loadMs;
+        if (err) {
+          log("warn", "rvs", `Voice-Ready Fehler fuer "${v}": ${err}`);
+        } else {
+          log("info", "rvs", `Voice "${v || "default"}" geladen${ms ? ` in ${(ms/1000).toFixed(1)}s` : ""}`);
+        }
+        broadcast({ type: "voice_ready", payload: msg.payload });
       } else {
         log("debug", "rvs", `Nachricht: ${JSON.stringify(msg).slice(0, 150)}`);
       }

rvs/server.js

@@ -19,6 +19,7 @@ const ALLOWED_TYPES = new Set([
   "agent_activity", "cancel_request",
   "audio_pcm",
   "xtts_delete_voice",
+  "voice_preload", "voice_ready",
 ]);
 
 // Token-Raum: token -> { clients: Set<ws> }

xtts/bridge.js

@@ -69,6 +69,18 @@ function connectRVS(forcePlain) {
         await handleListVoices();
       } else if (msg.type === "xtts_delete_voice") {
         await handleDeleteVoice(msg.payload);
+      } else if (msg.type === "voice_preload") {
+        await handleVoicePreload(msg.payload);
+      } else if (msg.type === "config") {
+        // Diagnostic hat globale Voice gewechselt → Preload damit der naechste
+        // Render ohne Ladewartezeit startet + alle Clients "voice_ready" sehen
+        const v = msg.payload && msg.payload.xttsVoice;
+        if (v && v !== lastDiagnosticVoice) {
+          lastDiagnosticVoice = v;
+          await handleVoicePreload({ voice: v, source: "diagnostic" });
+        } else if (!v) {
+          lastDiagnosticVoice = "";
+        }
       }
     } catch (err) {
       log(`Fehler: ${err.message}`);
@@ -95,12 +107,35 @@ function connectRVS(forcePlain) {
 
 // ── TTS Request Handler ─────────────────────────────
 
+/**
+ * Linearer Fade-In auf einen base64-PCM-Chunk (s16le).
+ * Mascht XTTS-Warmup-Glitches am Anfang eines Renders.
+ */
+function applyFadeIn(base64Pcm, sampleRate, channels, fadeMs) {
+  const buf = Buffer.from(base64Pcm, "base64");
+  const totalSamples = buf.length / 2; // s16le
+  const fadeSamples = Math.min(
+    Math.floor((fadeMs / 1000) * sampleRate) * channels,
+    totalSamples
+  );
+  for (let i = 0; i < fadeSamples; i++) {
+    const sample = buf.readInt16LE(i * 2);
+    const gain = i / fadeSamples;
+    buf.writeInt16LE(Math.round(sample * gain), i * 2);
+  }
+  return buf.toString("base64");
+}
+
 // ── TTS-Queue ──────────────────────────────────────
 // XTTS verarbeitet Requests sequenziell, damit Streams sich nicht ueberlappen.
 // Ohne Queue wuerden parallele Requests parallel streamen → App bekommt
 // interleaved PCM-Chunks aus zwei Rendern → klingt wie Chaos.
 let ttsQueue = Promise.resolve();
 
+// Merkt sich die letzte in Diagnostic gewaehlte Voice, damit wir nicht bei jedem
+// config-Broadcast (auch ohne Aenderung) einen Preload triggern.
+let lastDiagnosticVoice = "";
+
 function handleTTSRequest(payload) {
   ttsQueue = ttsQueue.then(() => _runTTSRequest(payload)).catch(err => {
     log(`TTS-Queue Fehler: ${err.message}`);
@@ -132,20 +167,38 @@ async function _runTTSRequest(payload) {
   log(`TTS-Request (streaming): "${cleanText.slice(0, 80)}..." (${cleanText.length} chars, voice: ${voice || "default"})`);
 
   try {
-    const voiceSample = voice ? path.join(VOICES_DIR, `${voice}.wav`) : null;
-    const hasCustomVoice = voiceSample && fs.existsSync(voiceSample);
+    // Im local-Mode erwartet daswer123 XTTS speaker_wav als Basename (ohne .wav,
+    // ohne Pfad) — der Server prefixt EXAMPLE_FOLDER selbst. Wir checken hier
+    // nur das physische File ab um Warnungen zu loggen; runter ans API geht
+    // nur der Name.
+    const voiceFilePath = voice ? path.join(VOICES_DIR, `${voice}.wav`) : null;
+    const hasCustomVoice = voiceFilePath && fs.existsSync(voiceFilePath);
+    const speakerName = hasCustomVoice ? voice : "";
+    if (voice && !hasCustomVoice) {
+      log(`WARNUNG: Voice "${voice}" angefordert, aber ${voiceFilePath} existiert nicht — nehme Default`);
+    } else if (hasCustomVoice) {
+      log(`Voice "${voice}" verwendet (speaker_wav="${speakerName}")`);
+    }
 
     let chunkIndex = 0;
     let pcmMeta = null;
+    let firstChunkSeen = false;
 
     const onChunk = (pcmBase64, meta) => {
       if (!pcmMeta) pcmMeta = meta;
+      let outBase64 = pcmBase64;
+      // Fade-In auf den ersten Chunk — maskiert XTTS-Warmup-Glitches
+      // (autoregressiver Generator hat am Anfang wenig Kontext → Artefakte).
+      if (!firstChunkSeen && pcmBase64) {
+        firstChunkSeen = true;
+        outBase64 = applyFadeIn(pcmBase64, meta.sampleRate, meta.channels, 120);
+      }
       sendToRVS({
         type: "audio_pcm",
         payload: {
           requestId: requestId || "",
           messageId: messageId || "",
-          base64: pcmBase64,
+          base64: outBase64,
           format: "pcm_s16le",
           sampleRate: meta.sampleRate,
           channels: meta.channels,
@@ -163,7 +216,7 @@ async function _runTTSRequest(payload) {
       await streamXTTSAsPCM(
         cleanText,
         language || "de",
-        hasCustomVoice ? voiceSample : null,
+        speakerName,
         onChunk,
       );
     } catch (streamErr) {
@@ -171,7 +224,7 @@ async function _runTTSRequest(payload) {
       await streamXTTSBatch(
         cleanText,
         language || "de",
-        hasCustomVoice ? voiceSample : null,
+        speakerName,
         onChunk,
       );
     }
@@ -216,15 +269,14 @@ function streamXTTSAsPCM(text, language, speakerWav, onPcmChunk) {
   return new Promise((resolve, reject) => {
     // Wichtig: speaker_wav MUSS als Query-Key dabei sein (Pydantic required) —
     // auch bei default-voice mit leerem Wert. Sonst gibt's HTTP 422.
-    // stream_chunk_size=100: Kompromiss zwischen first-audio-latency und
-    // gap-risk. Bei RTX 3060 (RTF 1.48) ~3s bis erster Audio, Chunks gross
-    // genug dass der AudioTrack-Buffer (128KB ≈ 2.7s) zwischen Chunks nicht
-    // leerlauft.
+    // stream_chunk_size=250: grosse Chunks = wenige Chunk-Grenzen = wenig
+    // Render-Artefakte. daswer123 erzeugt an Chunk-Boundaries haeufig Glitches
+    // in den Worten die ueber die Grenze gehen. Hoehere Latenz ist OK.
     const qs = new URLSearchParams();
     qs.set("text", text);
     qs.set("language", language || "de");
     qs.set("speaker_wav", speakerWav || "");
-    qs.set("stream_chunk_size", "100");
+    qs.set("stream_chunk_size", "250");
 
     const url = new URL(XTTS_API_URL);
     const fullPath = `/tts_stream?${qs.toString()}`;
@@ -434,6 +486,63 @@ async function handleDeleteVoice(payload) {
 
 // ── Voice List Handler ──────────────────────────────
 
+/**
+ * Preload einer Stimme — rendert stumm ein kurzes Dummy-Audio, damit XTTS
+ * die Speaker-Latents laedt und der naechste echte Request ohne Wartezeit
+ * loslegen kann. Broadcastet "voice_ready" wenn fertig (oder mit error).
+ */
+async function handleVoicePreload(payload) {
+  const voice = (payload && payload.voice) || "";
+  const source = (payload && payload.source) || "unknown";
+  const requestId = (payload && payload.requestId) || "";
+  log(`Voice-Preload angefordert: "${voice}" (source=${source})`);
+
+  try {
+    let speakerName = "";
+    if (voice) {
+      const voiceFilePath = path.join(VOICES_DIR, `${voice}.wav`);
+      if (!fs.existsSync(voiceFilePath)) {
+        sendToRVS({
+          type: "voice_ready",
+          payload: { voice, requestId, error: "voice-file-not-found" },
+          timestamp: Date.now(),
+        });
+        log(`Preload abgebrochen: ${voiceFilePath} existiert nicht`);
+        return;
+      }
+      speakerName = voice;
+    }
+
+    // Dummy-Request via Queue — damit sich Preload nicht mit echtem TTS ueberholt.
+    const t0 = Date.now();
+    await new Promise((resolve, reject) => {
+      ttsQueue = ttsQueue.then(async () => {
+        try {
+          await streamXTTSAsPCM("ja.", "de", speakerName, () => {});
+          resolve();
+        } catch (err) {
+          reject(err);
+        }
+      }).catch(reject);
+    });
+    const ms = Date.now() - t0;
+    log(`Voice "${voice || "default"}" geladen in ${ms}ms`);
+
+    sendToRVS({
+      type: "voice_ready",
+      payload: { voice, requestId, loadMs: ms },
+      timestamp: Date.now(),
+    });
+  } catch (err) {
+    log(`Voice-Preload Fehler: ${err.message}`);
+    sendToRVS({
+      type: "voice_ready",
+      payload: { voice, requestId, error: err.message.slice(0, 200) },
+      timestamp: Date.now(),
+    });
+  }
+}
+
 async function handleListVoices() {
   try {
     const files = fs.existsSync(VOICES_DIR)