KaniTTS
A high-speed, high-fidelity Text-to-Speech model optimized for real-time conversational AI applications.
Overview
KaniTTS uses a two-stage pipeline combining a large language model with an efficient audio codec for exceptional speed and audio quality. The architecture generates compressed token representations through a backbone LLM, then rapidly synthesizes waveforms via neural audio codec, achieving extremely low latency.
Key Specifications:
- Model Size: 450M parameters
- Sample Rate: 22kHz
- Languages: English, German, Arabic, Chinese, Korean, French, Japanese, Spanish
- License: Apache 2.0
Performance
Nvidia RTX 5080 Benchmarks:
- Latency: ~1 second to generate 15 seconds of audio
- Memory: 2GB GPU VRAM
- Quality Metrics: MOS 4.3/5 (naturalness), WER <5% (accuracy)
Pretraining:
- Dataset: ~80k hours from LibriTTS, Common Voice, and Emilia
- Hardware: 8x H100 GPUs, 45 hours training time on Lambda AI
Audio Examples
| Text | Audio |
|---|---|
| I do believe Marsellus Wallace, MY husband, YOUR boss, told you to take me out and do WHATEVER I WANTED. | |
| What do we say to the god of death? Not today! | |
| What do you call a lawyer with an IQ of 60? Your honor | |
| You mean, let me understand this cause, you know maybe it's me, it's a little fucked up maybe, but I'm funny how, I mean funny like I'm a clown, I amuse you? |
Use Cases
- Conversational AI: Real-time speech for chatbots and virtual assistants
- Edge/Server Deployment: Resource-efficient inference on affordable hardware
- Accessibility: Screen readers and language learning applications
- Research: Fine-tuning for specific voices, accents, or emotions
Limitations
- Performance degrades with inputs exceeding 2000 tokens
- Limited expressivity without fine-tuning for specific emotions
- May inherit biases from training data in prosody or pronunciation
- Optimized primarily for English; other languages may require additional training
Optimization Tips
- Multilingual Performance: Continually pretrain on target language datasets and fine-tune NanoCodec
- Batch Processing: Use batches of 8-16 for high-throughput scenarios
- Hardware: Optimized for NVIDIA Blackwell architecture GPUs
Resources
Models:
Examples:
Links:
Acknowledgments
Built on top of LiquidAI LFM2 350M as the backbone and Nvidia NanoCodec for audio processing.
Responsible Use
Prohibited activities include:
- Illegal content or harmful, threatening, defamatory, or obscene material
- Hate speech, harassment, or incitement of violence
- Generating false or misleading information
- Impersonating individuals without consent
- Malicious activities such as spamming, phishing, or fraud
By using this model, you agree to comply with these restrictions and all applicable laws.
Contact
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