docs: add audio TTS/STT research and GPU optimization documentation
- Add docs/audio/tts-research.md with Voxtral TTS, Kokoro-FastAPI, openedai-speech comparison - Add docs/audio/stt-research.md with Voxtral STT, faster-whisper options - Add docs/gpu/optimization.md with OLLAMA_KEEP_ALIVE and VRAM management - Add docs/README.md with architecture overview - Add index files for docs navigation Research conducted April 2026 for future audio improvements
This commit is contained in:
@@ -0,0 +1,157 @@
|
||||
# STT (Speech-to-Text) Research - Avril 2026
|
||||
|
||||
## Objectif
|
||||
Évaluer les solutions STT pour intégrer Voxtral de Mistral ou améliorer faster-whisper.
|
||||
|
||||
---
|
||||
|
||||
## Solutions Évaluées
|
||||
|
||||
### 1. Voxtral STT (Mistral) ⭐ INTÉRÊT FUTUR
|
||||
|
||||
#### Caractéristiques
|
||||
| Caractéristique | Valeur |
|
||||
|-----------------|--------|
|
||||
| **Modèle** | `mistralai/Voxtral-Mini-4B-Realtime-2602` |
|
||||
| **Type** | Streaming ASR (Speech-to-Text) |
|
||||
| **License** | Apache-2.0 ✅ |
|
||||
| **Langues** | 13 |
|
||||
| **VRAM** | ≥16GB (BF16) |
|
||||
| **Source** | [Hugging Face](https://huggingface.co/mistralai/Voxtral-Mini-4B-Realtime-2602) |
|
||||
|
||||
#### Avantages
|
||||
- ✅ OpenWebUI support natif via API Mistral
|
||||
- ✅ Streaming avec latence configurable (80ms - 2400ms)
|
||||
- ✅ Apache-2.0 license
|
||||
- ✅ Peut tourner sur vLLM ou Transformers
|
||||
|
||||
#### Inconvénients
|
||||
- ⚠️ 16GB VRAM minimum (BF16)
|
||||
- ⚠️ Requiert configuration spéciale pour streaming
|
||||
|
||||
#### Configuration OpenWebUI (Cloud API)
|
||||
```yaml
|
||||
Speech-to-Text Engine: MistralAI
|
||||
API Key: your-mistral-api-key
|
||||
STT Model: voxtral-mini-latest
|
||||
```
|
||||
|
||||
#### Alternative: Voxtral Mini Transcribe 2
|
||||
| Modèle | Type | Description |
|
||||
|--------|------|-------------|
|
||||
| `voxtral-mini-transcribe-26-02` | Premier | Dernière version |
|
||||
| `voxtral-mini-transcribe-realtime-26-02` | Open | Streaming temps réel |
|
||||
|
||||
---
|
||||
|
||||
### 2. Faster-Whisper (Actuel) 🔵 EN PRODUCTION
|
||||
|
||||
#### Caractéristiques
|
||||
| Caractéristique | Valeur |
|
||||
|-----------------|--------|
|
||||
| **Modèle** | `Systran/faster-whisper-large-v3` |
|
||||
| **Compute** | CPU (int8) |
|
||||
| **Langue** | Français |
|
||||
| **API** | Custom FastAPI (effi-stt) |
|
||||
| **Port** | 8200 |
|
||||
|
||||
#### Avantages
|
||||
- ✅ Fonctionne actuellement en production
|
||||
- ✅ Gratuit (pas d'API key)
|
||||
- ✅ Local (vie privée)
|
||||
- ✅ Performance acceptable sur CPU
|
||||
|
||||
#### Inconvénients
|
||||
- ⚠️ CPU only (plus lent que GPU)
|
||||
- ⚠️ Utilisation effi-stt custom (à maintenir)
|
||||
|
||||
#### Setup Actuel
|
||||
```yaml
|
||||
# OpenWebUI Configuration
|
||||
AUDIO_STT_ENGINE: openai
|
||||
AUDIO_STT_OPENAI_API_BASE_URL: http://192.168.1.11:8200/v1
|
||||
AUDIO_STT_OPENAI_API_KEY: anything
|
||||
AUDIO_STT_MODEL: Systran/faster-whisper-large-v3
|
||||
```
|
||||
|
||||
#### Code Source
|
||||
`effi-stt/main.py` - FastAPI wrapper autour de faster-whisper
|
||||
|
||||
---
|
||||
|
||||
### 3. Whisper OpenAI API (Cloud)
|
||||
|
||||
#### Caractéristiques
|
||||
| Caractéristique | Valeur |
|
||||
|-----------------|--------|
|
||||
| **Modèle** | whisper-1 |
|
||||
| **Coût** | Payant (par minute) |
|
||||
| **API Key** | OpenAI requise |
|
||||
|
||||
#### Configuration OpenWebUI
|
||||
```yaml
|
||||
Speech-to-Text Engine: OpenAI
|
||||
API Key: your-openai-api-key
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
## Comparatif STT
|
||||
|
||||
| Critère | Voxtral (Cloud) | Faster-Whisper | Whisper (Cloud) |
|
||||
|---------|------------------|----------------|-----------------|
|
||||
| **Coût** | Per-minute | Gratuit | Payant |
|
||||
| **Vie privée** | ❌ Cloud | ✅ Local | ❌ Cloud |
|
||||
| **VRAM** | 16GB+ (si local) | 0 (CPU) | 0 |
|
||||
| **OpenWebUI** | Natif | Custom API | Natif |
|
||||
| **French** | ✅ | ✅ | ✅ |
|
||||
|
||||
---
|
||||
|
||||
## Recommandations
|
||||
|
||||
### Pour Usage Personnel (Actuel)
|
||||
**Garder faster-whisper** car:
|
||||
- Gratuit et local
|
||||
- Fonctionne bien pour le français
|
||||
- Pas de dépendance cloud
|
||||
|
||||
### Pour Amélioration Future
|
||||
**Considérer Voxtral si:**
|
||||
- OpenWebUI intègre le support natif local
|
||||
- Vous avez un GPU avec ≥16GB VRAM disponible
|
||||
- Vous voulez améliorer la qualité
|
||||
|
||||
---
|
||||
|
||||
## Notes Techniques
|
||||
|
||||
### Modèles Faster-Whisper Disponibles
|
||||
| Modèle | Paramètres | Langues | Taille |
|
||||
|--------|------------|---------|--------|
|
||||
| tiny | 39M | 99 | ~75MB |
|
||||
| base | 74M | 99 | ~150MB |
|
||||
| small | 244M | 99 | ~500MB |
|
||||
| medium | 769M | 99 | ~1.5GB |
|
||||
| large-v3 | 1.56B | 99 | ~3GB |
|
||||
|
||||
### Configuration ACTUELLE
|
||||
```python
|
||||
# effi-stt/main.py
|
||||
MODEL_SIZE = "large-v3"
|
||||
DEVICE = "cpu"
|
||||
COMPUTE_TYPE = "int8"
|
||||
LANGUAGE = "fr"
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
## Sources
|
||||
- [Voxtral Mini Transcribe](https://huggingface.co/mistralai/Voxtral-Mini-4B-Realtime-2602)
|
||||
- [Faster-Whisper](https://github.com/SYSTRAN/faster-whisper)
|
||||
- [OpenWebUI STT Docs](https://docs.openwebui.com/features/chat-conversations/audio/speech-to-text/)
|
||||
|
||||
---
|
||||
|
||||
*Document créé: Avril 2026*
|
||||
*Dernière mise à jour: Avril 2026*
|
||||
Reference in New Issue
Block a user