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feat: Stille-Toleranz fuer Aufnahme einstellbar in App-Settings 

Neuer +/- Block in SettingsScreen → Spracheingabe → "Stille-Toleranz",
1.0-8.0s, Default 2.8s. Wert in AsyncStorage (aria_vad_silence_sec).
audio.ts liest den Wert beim Aufnahme-Start und nutzt ihn fuer den
VAD-Auto-Stop-Schwellwert.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
duffyduck 2026-04-24 14:44:17 +02:00
parent 2a4379eb64
commit 0a04972455
2 changed files with 74 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

50
android/src/screens/SettingsScreen.tsx
View File

@ -27,6 +27,10 @@ import {
TTS_PREROLL_MIN_SEC,
TTS_PREROLL_MAX_SEC,
TTS_PREROLL_STORAGE_KEY,
VAD_SILENCE_DEFAULT_SEC,
VAD_SILENCE_MIN_SEC,
VAD_SILENCE_MAX_SEC,
VAD_SILENCE_STORAGE_KEY,
} from '../services/audio';
import ModeSelector from '../components/ModeSelector';
import QRScanner from '../components/QRScanner';
@ -82,6 +86,7 @@ const SettingsScreen: React.FC = () => {
const [storageSize, setStorageSize] = useState('...');
const [ttsEnabled, setTtsEnabled] = useState(true);
const [ttsPrerollSec, setTtsPrerollSec] = useState<number>(TTS_PREROLL_DEFAULT_SEC);
const [vadSilenceSec, setVadSilenceSec] = useState<number>(VAD_SILENCE_DEFAULT_SEC);
const [editingPath, setEditingPath] = useState(false);
const [xttsVoice, setXttsVoice] = useState('');
const [loadingVoice, setLoadingVoice] = useState<string | null>(null);
@ -117,6 +122,14 @@ const SettingsScreen: React.FC = () => {
}
}
});
AsyncStorage.getItem(VAD_SILENCE_STORAGE_KEY).then(saved => {
if (saved != null) {
const n = parseFloat(saved);
if (isFinite(n) && n >= VAD_SILENCE_MIN_SEC && n <= VAD_SILENCE_MAX_SEC) {
setVadSilenceSec(n);
}
}
});
AsyncStorage.getItem('aria_xtts_voice').then(saved => {
if (saved) setXttsVoice(saved);
});
@ -555,6 +568,43 @@ const SettingsScreen: React.FC = () => {
</View>
</View>
{/* === Spracheingabe (geraetelokal) === */}
<Text style={styles.sectionTitle}>Spracheingabe</Text>
<View style={styles.card}>
<Text style={styles.toggleLabel}>Stille-Toleranz</Text>
<Text style={styles.toggleHint}>
Wie lange du eine Sprechpause machen darfst, bevor die Aufnahme
automatisch beendet und gesendet wird. Hoeher = mehr Zeit zum
Nachdenken; niedriger = schnelleres Senden.
Default: {VAD_SILENCE_DEFAULT_SEC.toFixed(1)}s.
</Text>
<View style={styles.prerollRow}>
<TouchableOpacity
style={styles.prerollButton}
onPress={() => {
const next = Math.max(VAD_SILENCE_MIN_SEC, Math.round((vadSilenceSec - 0.5) * 10) / 10);
setVadSilenceSec(next);
AsyncStorage.setItem(VAD_SILENCE_STORAGE_KEY, String(next));
}}
disabled={vadSilenceSec <= VAD_SILENCE_MIN_SEC}
>
<Text style={styles.prerollButtonText}>−0.5</Text>
</TouchableOpacity>
<Text style={styles.prerollValue}>{vadSilenceSec.toFixed(1)} s</Text>
<TouchableOpacity
style={styles.prerollButton}
onPress={() => {
const next = Math.min(VAD_SILENCE_MAX_SEC, Math.round((vadSilenceSec + 0.5) * 10) / 10);
setVadSilenceSec(next);
AsyncStorage.setItem(VAD_SILENCE_STORAGE_KEY, String(next));
}}
disabled={vadSilenceSec >= VAD_SILENCE_MAX_SEC}
>
<Text style={styles.prerollButtonText}>+0.5</Text>
</TouchableOpacity>
</View>
</View>
{/* === Sprachausgabe (geraetelokal) === */}
<Text style={styles.sectionTitle}>Sprachausgabe</Text>
<View style={styles.card}>

27
android/src/services/audio.ts
View File

@ -74,10 +74,29 @@ const AUDIO_ENCODING = 'audio/wav';
// VAD (Voice Activity Detection) — Stille-Erkennung
const VAD_SILENCE_THRESHOLD_DB = -45; // dB unter dem als "Stille" gilt
const VAD_SILENCE_DURATION_MS = 2800; // ms Stille bevor Auto-Stop — laenger = mehr Toleranz fuer Sprechpausen
const VAD_SPEECH_THRESHOLD_DB = -28; // dB ueber dem als "Sprache" gilt (Sprach-Gate) — hoeher = weniger Umgebungsgeraeusche
const VAD_SPEECH_MIN_MS = 500; // ms Sprache bevor Aufnahme zaehlt — laenger = keine Huestler/Klopfer mehr
// VAD-Stille (in Sekunden) — wie lange Sprechpause toleriert wird, bevor
// die Aufnahme automatisch beendet wird. Einstellbar in den App-Settings.
export const VAD_SILENCE_DEFAULT_SEC = 2.8;
export const VAD_SILENCE_MIN_SEC = 1.0;
export const VAD_SILENCE_MAX_SEC = 8.0;
export const VAD_SILENCE_STORAGE_KEY = 'aria_vad_silence_sec';
async function loadVadSilenceMs(): Promise<number> {
try {
const raw = await AsyncStorage.getItem(VAD_SILENCE_STORAGE_KEY);
if (raw != null) {
const n = parseFloat(raw);
if (isFinite(n) && n >= VAD_SILENCE_MIN_SEC && n <= VAD_SILENCE_MAX_SEC) {
return Math.round(n * 1000);
}
}
} catch {}
return Math.round(VAD_SILENCE_DEFAULT_SEC * 1000);
}
// Max-Dauer einer Aufnahme (Notbremse gegen Runaway-Loops). Auf 2 Minuten
// hochgezogen damit auch laengere Erklaerungen durchgehen.
const MAX_RECORDING_MS = 120000;
@ -238,12 +257,14 @@ class AudioService {
// Andere Apps waehrend der Aufnahme pausieren (Musik, Videos etc.)
AudioFocus?.requestExclusive().catch(() => {});
// VAD aktivieren
// VAD aktivieren — Stille-Dauer aus AsyncStorage (Settings-konfigurierbar)
this.vadEnabled = autoStop;
if (autoStop) {
const vadSilenceMs = await loadVadSilenceMs();
console.log('[Audio] VAD-Stille:', vadSilenceMs, 'ms');
this.vadTimer = setInterval(() => {
const silenceDuration = Date.now() - this.lastSpeechTime;
if (silenceDuration >= VAD_SILENCE_DURATION_MS) {
if (silenceDuration >= vadSilenceMs) {
console.log(`[Audio] VAD: ${silenceDuration}ms Stille — Auto-Stop`);
this.silenceListeners.forEach(cb => cb());
}