SteerTTS: 23M-param English TTS you steer with numbers (pitch, rate, loudness, etc. as z-scores), runs real-time on CPU [P]
I was looking for small TTS model which is steerable but couldn't find any, specially something I can adjust contextually by providing controls from LLM during a conversation.
Proof1 community thread
Key points
- 9.6M-param acoustic model (attention + bidirectional Mamba-3, FastPitch-style) + Vocos vocoder = 23M total
- Also: 51 style tags, free-text prompts (resolved into an inspectable JSON request), inline markup (emphasis, [pause 400ms], <slow>...</slow>), sentence-level streaming
- ~1.8% average WER on the Open TTS Leaderboard English sets (run locally, not an official submission, have reached out for it).
- Loudness, pitch, and tilt steer reliably; pause, voicing, and CPPS controls are weak
Sources (1)
- [1]SteerTTS: 23M-param English TTS you steer with numbers (pitch, rate, loudness, etc. as z-scores), runs real-time on CPU [P]r/MachineLearning (top, daily) · Oct 19, 05:36 AM
I was looking for small TTS model which is steerable but couldn't find any, specially something I can adjust contextually by providing controls from LLM during a conversation.
- 9.6M-param acoustic model (attention + bidirectional Mamba-3, FastPitch-style) + Vocos vocoder = 23M total
Extractive summary: sentences quoted from the sources.
Before this
- Oct 17, 2026deepseek-ai/DeepSeek-V4.1-Flash-1017
- Oct 17, 2026Nemotron 3.5 Bolt, Muse Spark Open, and a Fast LFM2.5 24B
- Oct 16, 2026[Research] 2,788 tokens/s on a single RTX 5090 with a diffusion LLM — Introducing ORL (fully open source)
- Oct 15, 2026open source framework that makes your AI agents generate UI elements
- Oct 15, 2026Granite Switch 4.1: Chat, Decisions, and Speech from One Endpoint
- Oct 15, 2026NVIDIA Nemotron 3.5 Super VL Powers Specialized Agents with Multimodal Reasoning
