# supertonic | Supertone Inc. | Knowledge Base | Instagit

Lightning-Fast, On-Device, Multilingual TTS — running natively via ONNX.

GitHub Stars: 4.9k

Repository: https://github.com/supertone-inc/supertonic

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## Articles

### [How the Supertonic Speed Parameter (0.7–2.0) Affects Latency vs. Audio Quality](/supertone-inc/supertonic/supertonic-speed-parameter-latency-quality)

Discover how the Supertonic speed parameter (0.7-2.0) impacts audio latency and quality. Learn how to balance natural speech with computational speed for optimal results.

- Tags: performance
- Published: 2026-06-15

### [How to Migrate from Supertonic v2 to v3 While Maintaining ONNX Interface Compatibility](/supertone-inc/supertonic/migrate-supertonic-v2-to-v3-onnx)

Migrate Supertonic v2 to v3 seamlessly. Maintain ONNX interface compatibility by swapping model and config files. Learn how to upgrade without inference code changes.

- Tags: migration-guide
- Published: 2026-06-15

### [Supertonic vs VoxCPM2 WER/CER: How the 99M Parameter Model Matches 2B Parameter Accuracy](/supertone-inc/supertonic/supertonic-vs-voxcpm2-wer-cer)

Discover how Supertonic's 99M parameter TTS model rivals VoxCPM2's 2B parameter accuracy in WER/CER. Get comparable or better results with fewer resources.

- Tags: performance
- Published: 2026-06-15

### [How Supertonic Preprocesses Text: Unicode Normalization and Emoji Removal](/supertone-inc/supertonic/supertonic-text-preprocessing-unicode-emoji)

Discover how Supertonic preprocesses text with its UnicodeProcessor. Learn about Unicode normalization, emoji removal, and a 10-step pipeline for clean, tokenized input.

- Tags: how-to-guide
- Published: 2026-06-15

### [How to Optimize Supertonic for Low‑Latency Real‑Time Synthesis on CPU](/supertone-inc/supertonic/optimize-supertonic-real-time-cpu)

Optimize Supertonic for low-latency CPU synthesis. Configure ONNX Runtime, reduce steps to 6-8, boost speed to 1.2-1.5, and use singleton sessions for minimal overhead.

- Tags: performance
- Published: 2026-06-15

### [How Supertonic’s ONNX Inference Pipeline Works: Duration Predictor, Text Encoder, Vector Estimator, and Vocoder Explained](/supertone-inc/supertonic/how-supertonics-onnx-inference-pipeline-works)

Explore Supertonic's ONNX inference pipeline. Understand how duration predictor, text encoder, vector estimator, and vocoder work together for advanced text to speech generation.

- Tags: internals
- Published: 2026-06-15

### [Required ONNX Model Files and How load_onnx_all() Loads Them in Supertonic](/supertone-inc/supertonic/what-onnx-model-files-are-required-and-how-are-they-loaded-via-load-onnx-all)

Discover the four essential ONNX model files required by Supertonic and learn how load_onnx_all() efficiently loads them using onnxruntime for your AI audio projects.

- Tags: api-reference
- Published: 2026-06-14

### [How to Set Up the Supertonic Serve HTTP Server with Custom Endpoints](/supertone-inc/supertonic/how-do-i-set-up-the-supertonic-serve-http-server-with-custom-endpoints)

Learn to set up the supertonic serve HTTP server with custom endpoints. Extend built-in TTS functionality with your own business logic using FastAPI and APIRouter.

- Tags: how-to-guide
- Published: 2026-06-14

### [Supertonic Text-to-Speech Output Audio Format: 44.1 kHz 16-bit WAV Configuration](/supertone-inc/supertonic/what-is-the-output-audio-format-44-1khz-16-bit-wav)

Discover Supertonic's default output audio format: 44.1 kHz 16-bit WAV mono files. Configure your audio settings for high-fidelity text-to-speech. Optimize your sound projects with Supertonic.

- Tags: api-reference
- Published: 2026-06-14

### [Maximum Input Text Length and Text Chunking in Supertonic: Implementation Guide](/supertone-inc/supertonic/what-is-the-maximum-input-text-length-and-how-is-long-text-chunked)

Discover Supertonic's maximum input text length limits and how it intelligently chunks long text into 300-character segments by default using sentence boundaries and a consistent algorithm.

- Tags: how-to-guide
- Published: 2026-06-14

### [How Supertonic Handles Financial Expressions, Phone Numbers, and Technical Units](/supertone-inc/supertonic/how-does-supertonic-handle-financial-expressions-phone-numbers-and-technical-units)

Discover how Supertonic's TTS pipeline automatically handles financial expressions, phone numbers, and technical units with its built-in text normalizer. Get natural spoken output without pre-processing.

- Tags: deep-dive
- Published: 2026-06-14

### [How to Load and Switch Between Voice Style Presets (M1‑M5, F1‑F5) in Supertonic](/supertone-inc/supertonic/how-do-i-load-and-switch-between-voice-style-presets-m1-m5-f1-f5)

Learn to load and switch Supertonic voice style presets M1-M5 and F1-F5 using loadVoiceStyle or load_voice_style. Easily manage voice styles at runtime by updating file paths or batch indexes.

- Tags: how-to-guide
- Published: 2026-06-14

### [How the Supertonic Speed Parameter (0.7–2.0) Affects Synthesis Pitch and Pace](/supertone-inc/supertonic/how-does-the-speed-parameter-0-7-2-0-affect-synthesis-pitch-and-pace)

Discover how the Supertonic speed parameter (0.7-2.0) controls synthesis tempo without affecting pitch. Learn to adjust speech pace with this powerful tool. Explore the Supertonic repository for more.

- Tags: performance
- Published: 2026-06-14

### [API Differences Between Supertonic 2 and Supertonic 3: What Changed in the TTS Engine](/supertone-inc/supertonic/what-are-the-api-differences-between-supertonic-2-and-supertonic-3)

Understand the API differences between Supertonic 2 and Supertonic 3. Upgrade seamlessly as HTTP endpoints remain identical, focusing on model architecture and performance enhancements.

- Tags: api-reference
- Published: 2026-06-14

### [How to Configure CPU vs GPU Execution Providers in ONNX Runtime in Supertonic](/supertone-inc/supertonic/how-do-i-configure-cpu-vs-gpu-execution-providers-in-onnx-runtime)

Learn how to configure CPU vs GPU execution providers in ONNX Runtime with Supertonic. Easily optimize your model performance by selecting the right provider for your hardware.

- Tags: how-to-guide
- Published: 2026-06-14

### [Supertonic Memory Footprint and Latency on Raspberry Pi and E-Readers](/supertone-inc/supertonic/what-is-the-memory-footprint-and-latency-when-running-on-raspberry-pi-or-e-readers)

Discover Supertonic memory footprint and latency on Raspberry Pi and e-readers. Achieve real-time factors of 0.5 and 0.3 on edge devices with just 300 MiB RAM.

- Tags: performance
- Published: 2026-06-14

### [How the UnicodeProcessor Class Preprocesses and Indexes Text for Supertonic's TTS Model](/supertone-inc/supertonic/how-does-the-unicodeprocessor-class-preprocess-and-index-text-for-the-model)

Learn how the UnicodeProcessor class preprocesses and indexes text for Supertonic's TTS model. Discover Unicode normalization, regex cleaning, and code-point mapping for efficient text processing.

- Tags: internals
- Published: 2026-06-14

### [Supertonic Internal ONNX Pipeline Architecture: Duration Predictor, Text Encoder, Vector Estimator, and Vocoder Explained](/supertone-inc/supertonic/what-is-the-internal-onnx-pipeline-architecture-duration-predictor-text-encoder-vector-estimator-vocoder)

Explore Supertonic's ONNX pipeline for text-to-speech: learn about the Duration Predictor, Text Encoder, Vector Estimator, and Vocoder. Generate raw audio from text tokens.

- Tags: architecture
- Published: 2026-06-14

### [How to Call the OpenAI-Compatible /v1/audio/speech Endpoint with Supertonic Serve](/supertone-inc/supertonic/how-do-i-call-the-openai-compatible-v1-audio-speech-endpoint-with-supertonic-serve)

Easily call the OpenAI compatible audio speech endpoint using supertonic serve. Send a POST request to your local FastAPI server and get synthesized audio binary.

- Tags: how-to-guide
- Published: 2026-06-14

### [Performance Tradeoffs of the total_steps Parameter (5-12) in Supertonic TTS](/supertone-inc/supertonic/what-are-the-performance-tradeoffs-of-the-total-steps-parameter-5-12)

Explore total_steps parameter tradeoffs in Supertonic TTS. Learn how increasing steps enhances audio quality while impacting inference latency, GPU load, and memory. Optimize your performance.

- Tags: performance
- Published: 2026-06-14

### [How Supertonic Handles Language-Agnostic Synthesis with `lang="na"`](/supertone-inc/supertonic/how-does-supertonic-handle-language-agnostic-synthesis-with-lang-na)

Discover how Supertonic achieves language-agnostic synthesis using lang='na'. Learn how it processes and routes encoded tokens efficiently through its multilingual ONNX inference graph for seamless text-to-speech.

- Tags: internals
- Published: 2026-06-14

### [How the chunk_text() Function Handles Long Text and Sentence Boundaries in Supertonic](/supertone-inc/supertonic/how-does-the-chunk-text-function-handle-long-text-inputs-and-sentence-boundaries)

Explore how Supertonic's chunk_text() function splits long text into speech-ready fragments, respecting sentence boundaries and configurable maximum lengths for natural output.

- Tags: deep-dive
- Published: 2026-06-14

### [How to Integrate Custom Voice Builder JSON Files for Voice Cloning with Supertonic](/supertone-inc/supertonic/how-do-i-integrate-custom-voice-builder-json-files-for-voice-cloning)

Integrate custom Voice Builder JSON files for voice cloning with Supertonic by using load_voice_style or CLI flags with style_ttl and style_dp parameters for seamless integration.

- Tags: how-to-guide
- Published: 2026-06-14

### [How to Implement Batch Processing with Supertonic's Python SDK batch() Method](/supertone-inc/supertonic/how-do-i-implement-batch-processing-with-the-python-sdks-batch-method)

Implement batch processing efficiently with Supertonic's Python SDK batch() method. Process parallel lists of texts in a single ONNX forward pass for faster results.

- Tags: how-to-guide
- Published: 2026-06-14

### [Supertonic 3 Expression Tags: How to Use Text Shortcuts in Neural TTS](/supertone-inc/supertonic/what-expression-tags-are-available-in-supertonic-3-and-how-do-i-use-them)

Discover Supertonic 3 expression tags like @, e.g., and i.e. Learn how these text shortcuts enhance your neural TTS output and streamline speech synthesis.

- Tags: how-to-guide
- Published: 2026-06-14

### [How Supertonic's Text Normalization Handles Special Characters and Unicode](/supertone-inc/supertonic/how-does-supertonics-text-normalization-handle-special-characters-and-unicode)

Discover how Supertonic text normalization handles special characters and Unicode using NFKD decomposition and diacritic stripping for clean ASCII output in speech synthesis.

- Tags: how-to-guide
- Published: 2026-06-14

### [Supertonic Future Roadmap: On-Device TTS Expansion and Edge Optimization](/supertone-inc/supertonic/what-is-the-future-roadmap-for-supertonic)

Discover Supertonic's future roadmap: expanding on-device TTS, adding voice cloning APIs, and optimizing edge inference for broader language support and efficient performance.

- Tags: getting-started
- Published: 2026-06-13

### [Where to Find Supertonic API Documentation: Complete Guide for All Languages](/supertone-inc/supertonic/where-to-find-documentation-for-supertonic-api)

Find Supertonic API documentation easily. Explore the GitHub repository for authentication, overview, and language-specific guides. Get started with Supertonic quickly.

- Tags: api-reference
- Published: 2026-06-13

### [How to Fine-Tune Supertonic Models: Voice Builder vs. Training Pipeline](/supertone-inc/supertonic/how-to-fine-tune-supertonic-models)

Discover how to fine-tune Supertonic models. Customize voice output with Voice Builder or rebuild the training pipeline using research papers from the repository.

- Tags: how-to-guide
- Published: 2026-06-13

### [What Kind of Models Does Supertonic Use? Inside the 99M Parameter ONNX Architecture](/supertone-inc/supertonic/what-kind-of-models-does-supertonic-use)

Discover Supertonic's 99M parameter ONNX models for text-to-speech. Learn about their compact, privacy-preserving architecture for on-device inference.

- Tags: internals
- Published: 2026-06-13

### [How to integrate Supertonic into a web application](/supertone-inc/supertonic/how-to-integrate-supertonic-into-a-web-application)

Integrate Supertonic into your web app for client-side text-to-speech synthesis. Discover how to use ONNX Runtime Web and leverage quick setup with our helper methods.

- Tags: how-to-guide
- Published: 2026-06-13

### [How to Troubleshoot Common Supertonic Errors: A Complete SDK Guide](/supertone-inc/supertonic/how-to-troubleshoot-common-supertonic-errors)

Troubleshoot common Supertonic errors with this SDK guide. Diagnose invalid language codes, mismatched list sizes, missing ONNX models, and GPU issues across Python, Node.js, Go, and Web.

- Tags: how-to-guide
- Published: 2026-06-13

### [Is Supertonic Compatible with Other Audio Libraries? A Complete Integration Guide](/supertone-inc/supertonic/is-supertonic-compatible-with-other-audio-libraries)

Discover Supertonic compatibility with other audio libraries. Generate standard WAV files for seamless integration with any audio processing tool. Read our complete guide now.

- Tags: how-to-guide
- Published: 2026-06-13

### [How Supertonic Handles Different Audio Lengths in Text-to-Speech Synthesis](/supertone-inc/supertonic/how-does-supertonic-handle-different-audio-lengths)

Discover how Supertonic handles diverse audio lengths using advanced techniques like length-to-mask conversion and automatic chunking for seamless text-to-speech synthesis. Explore our SDKs.

- Tags: how-to-guide
- Published: 2026-06-13

### [Supertonic Audio Formats: Why It Only Outputs WAV (44.1 kHz 16-bit)](/supertone-inc/supertonic/what-kind-of-audio-formats-does-supertonic-support)

Discover why Supertonic audio formats are limited to WAV 44.1 kHz 16-bit for studio-quality output. Learn about its SDK and platform compatibility and lack of MP3 support.

- Tags: api-reference
- Published: 2026-06-13

### [What Are the Core Components of Supertonic?](/supertone-inc/supertonic/what-are-the-core-components-of-supertonic)

Discover Supertonic's core components. This multi-language TTS library uses minimal helper modules and a unified API to abstract ONNX inference for seamless text-to-speech generation.

- Tags: deep-dive
- Published: 2026-06-13

### [How to Report a Bug in Supertonic: A Complete Guide for Contributors](/supertone-inc/supertonic/how-to-report-a-bug-in-supertonic)

Learn how to report a bug in Supertonic. Follow our guide to submit a clear GitHub issue with reproducible steps for faster resolution.

- Tags: how-to-guide
- Published: 2026-06-13

### [What License Governs Supertonic? Understanding the MIT License Terms](/supertone-inc/supertonic/what-is-the-license-for-supertonic)

Discover the MIT License terms governing Supertonic. Use, modify, and distribute this project freely across commercial and open-source applications with ease.

- Tags: licensing
- Published: 2026-06-13

### [How to Contribute to Supertonic: A Complete Guide for Open-Source Developers](/supertone-inc/supertonic/how-to-contribute-to-supertonic)

Learn how to contribute to Supertonic. Follow our guide to fork the repository, set up prerequisites, and submit your pull request for open-source collaboration.

- Tags: how-to-guide
- Published: 2026-06-13

### [Where to Find Supertonic Examples: Complete Guide for All Languages](/supertone-inc/supertonic/where-can-i-find-supertonic-examples)

Find Supertonic examples for Python, Node.js, Java, Go, and more in the supertone-inc/supertonic repository. Discover complete implementations for all your language needs today.

- Tags: getting-started
- Published: 2026-06-13

### [What Programming Languages Does Supertonic Support? Complete Multi-Runtime SDK Guide](/supertone-inc/supertonic/what-programming-languages-does-supertonic-support)

Discover the 11 programming languages Supertonic SDK supports for cross-platform neural speech synthesis. Leverage Python, Node.js, Java, C++, and more with a unified ONNX Runtime backend.

- Tags: api-reference
- Published: 2026-06-13

### [Prerequisites for Supertonic: Complete Setup Guide for Multi-Language TTS](/supertone-inc/supertonic/what-are-the-prerequisites-for-supertonic)

Discover the full prerequisites for Supertonic. Install Git LFS and ensure language runtimes like Python .NET Node.js or Go with ONNX Runtime are set up for your multi-language TTS project.

- Tags: how-to-guide
- Published: 2026-06-13

### [How to Install Supertonic: Complete Setup Guide for Python, Node.js, and More](/supertone-inc/supertonic/how-to-install-supertonic)

Easily install Supertonic with our complete setup guide. Learn how to configure it for Python, Node.js, and more by cloning the repo and downloading essential model assets today.

- Tags: getting-started
- Published: 2026-06-13

### [What is Supertonic? The Open-Source On-Device Multilingual TTS System Explained](/supertone-inc/supertonic/what-is-supertonic)

Discover Supertonic, a fast open-source on-device multilingual TTS system. Get high-quality 44.1 kHz audio in 31 languages with zero cloud dependencies. Runs locally via ONNX Runtime.

- Tags: getting-started
- Published: 2026-06-13

### [How to Implement Error Handling and Fallback for Supertonic TTS Inference Failures](/supertone-inc/supertonic/error-handling-fallback-supertonic-tts-inference-failures)

Implement robust error handling and fallback for Supertonic TTS inference. Use try-catch, multi-tier fallbacks, and optional error states to prevent hangs.

- Tags: how-to-guide
- Published: 2026-06-12

### [Supertonic v2 vs v3: Key Differences and Migration Guide](/supertone-inc/supertonic/differences-between-supertonic-v2-and-v3-models)

Discover Supertonic v3 key differences from v2. Get 3x language coverage, improved accuracy, smaller size, and expressive control tags. Migrate easily with the same ONNX contract.

- Tags: migration-guide
- Published: 2026-06-12

### [How to Implement Real-Time Text-to-Speech with Supertonic in a Web Application](/supertone-inc/supertonic/implement-real-time-tts-supertonic-web-application)

Implement real-time TTS in your web app using Supertonic. Leverage ONNX Runtime Web and WebGPU for fast, in-browser speech synthesis. Learn how to load models and synthesize speech efficiently.

- Tags: how-to-guide
- Published: 2026-06-12

### [What Is the Memory Footprint of Running Supertonic Inference?](/supertone-inc/supertonic/memory-footprint-running-supertonic-inference)

Discover the memory footprint of Supertonic inference. Learn how Supertonic uses 500-800 MiB RAM, making it ideal for edge devices and CPUs.

- Tags: performance
- Published: 2026-06-12

### [How to Deploy Supertonic in a Production Environment: Complete Setup Guide](/supertone-inc/supertonic/deploy-supertonic-production-environment)

Learn to deploy Supertonic in a production environment. Containerize the Python HTTP server, manage model assets with Git-LFS, and use NGINX for TLS and load balancing. Get the complete setup guide.

- Tags: how-to-guide
- Published: 2026-06-12

### [How to Compare Supertonic's Performance Against Other TTS Engines](/supertone-inc/supertonic/compare-supertonics-performance-other-tts-engines)

Easily compare Supertonic's TTS performance against others. Evaluate accuracy WER, speed RTF, and model efficiency using provided scripts and datasets. Get started now.

- Tags: performance
- Published: 2026-06-12

### [How to Implement Streaming Audio Playback for Supertonic TTS Output](/supertone-inc/supertonic/implement-streaming-audio-playback-supertonic-tts-output)

Implement streaming audio playback for Supertonic TTS. Feed PCM samples directly to AVAudioEngine for efficient audio generation without temporary files.

- Tags: how-to-guide
- Published: 2026-06-12

### [Supertonic Voice Style JSON Format: How to Create Custom Voices](/supertone-inc/supertonic/voice-style-json-format-supertonic-create-custom-voices)

Learn the Supertonic voice style JSON format for custom voices. Discover how to create voice presets with speaker embeddings and runtime parameters using the Voice Builder.

- Tags: how-to-guide
- Published: 2026-06-12

### [How to Run Supertonic on Windows Using C# or C++](/supertone-inc/supertonic/run-supertonic-windows-csharp-cpp)

Easily run Supertonic on Windows using C# or C++. Build the C# sample with dotnet CLI or compile the C++ sample with CMake to generate WAV audio files.

- Tags: how-to-guide
- Published: 2026-06-12

### [How the Speed Parameter in Supertonic Controls Speech Rate](/supertone-inc/supertonic/what-speed-parameter-supertonic-affects-audio-output)

Control speech rate with Supertonic's speed parameter. Accelerate or decelerate audio playback while preserving pitch. Learn how this floating-point divisor works.

- Tags: how-to-guide
- Published: 2026-06-12

### [How to Build Supertonic from Source Using CMake](/supertone-inc/supertonic/build-supertonic-from-source-cmake)

Learn to build Supertonic from source with CMake. Follow our guide to clone the repository, install dependencies, and compile the TTS inference engine for your project.

- Tags: how-to-guide
- Published: 2026-06-12

### [Supertonic 3 Supported Languages and Language Codes: Complete Guide](/supertone-inc/supertonic/languages-supertonic-3-support-specify-language-codes)

Explore Supertonic 3's 31 supported languages and learn how to use ISO-639-1 language codes with the lang parameter. Get the complete guide for Supertonic 3.

- Tags: getting-started
- Published: 2026-06-12

### [How to Troubleshoot ONNX Runtime Loading Errors in Supertonic](/supertone-inc/supertonic/troubleshoot-onnx-runtime-loading-errors-supertonic)

Troubleshoot ONNX Runtime loading errors in Supertonic. Verify model files, check onnxruntime wheel compatibility, and ensure hardware execution provider match for smooth inference.

- Tags: how-to-guide
- Published: 2026-06-12

### [Key Differences Between Supertonic's Python, Swift, Rust, and Go Implementations](/supertone-inc/supertonic/differences-supertonic-python-swift-rust-go-implementations)

Discover Supertonic's Python, Swift, Rust, and Go implementations. Explore unique ecosystem advantages for each language in TTS inference pipelines for ONNX bindings, Unicode, tensors, and error handling.

- Tags: deep-dive
- Published: 2026-06-12

### [How to Integrate Supertonic into an iOS App Using Swift: Complete Implementation Guide](/supertone-inc/supertonic/integrate-supertonic-ios-app-swift)

Learn to integrate Supertonic into your iOS app with Swift. This guide covers adding the ONNX Runtime Swift package, initializing TTSService, and generating local WAV files for text to speech.

- Tags: how-to-guide
- Published: 2026-06-12

### [What Does the Denoising Steps (`total-step`) Parameter Control in Supertonic?](/supertone-inc/supertonic/what-denoising-steps-parameter-control-supertonic)

Learn how the total-step parameter in Supertonic controls denoising iterations, balancing inference speed and audio quality. Adjust this setting for faster or more refined TTS synthesis.

- Tags: deep-dive
- Published: 2026-06-12

### [How Supertonic's Automatic Text Chunking Works for Long-Form Speech Synthesis](/supertone-inc/supertonic/how-does-supertonics-automatic-text-chunking-work-long-form-synthesis)

Discover how Supertonic's automatic text chunking creates seamless long-form speech synthesis by intelligently splitting text into manageable parts for natural audio output.

- Tags: how-to-guide
- Published: 2026-06-12

### [What is Supertonic's Batch Processing Mode and When Should You Use It?](/supertone-inc/supertonic/supertonics-batch-processing-mode-when-to-use)

Discover Supertonic's batch processing mode. Process parallel lists of short texts in a single ONNX inference call for efficient audio generation. Learn when to use this feature.

- Tags: how-to-guide
- Published: 2026-06-12

### [How to Implement Custom Voice Styles for Supertonic: A Complete Guide](/supertone-inc/supertonic/implement-custom-voice-styles-supertonic)

Implement custom voice styles for Supertonic speech synthesis. Learn how to create and load voice style JSON files for unique acoustic characteristics in this comprehensive guide.

- Tags: how-to-guide
- Published: 2026-06-12

### [Supertonic Text Preprocessing Pipeline: How UnicodeProcessor Prepares Text for TTS](/supertone-inc/supertonic/text-preprocessing-pipeline-supertonic-unicode-processor-function)

Explore the Supertonic text preprocessing pipeline and understand how UnicodeProcessor prepares text for TTS. Learn about normalization, decomposition, and index mapping for model-ready tokens.

- Tags: deep-dive
- Published: 2026-06-12

### [Differences Between the ONNX Models in Supertonic TTS: duration_predictor, text_encoder, vector_estimator, and vocoder](/supertone-inc/supertonic/differences-between-onnx-models-duration-predictor-text-encoder-vector-estimator-vocoder)

Understand the distinct roles of Supertonic ONNX models: duration_predictor, text_encoder, vector_estimator, and vocoder. Learn how each contributes to the TTS pipeline from tokens to audio.

- Tags: deep-dive
- Published: 2026-06-12

### [How Supertonic's ONNX Inference Pipeline Works Internally](/supertone-inc/supertonic/how-does-supertonics-onnx-inference-pipeline-work-internally)

Explore Supertonic's ONNX inference pipeline. Discover how it uses four ONNX models, a Rust core, and Python bindings to convert text to audio through an iterative denoising loop.

- Tags: internals
- Published: 2026-06-12

### [How Supertonic Handles Natural Text: Financial Expressions, Phone Numbers, and Technical Units](/supertone-inc/supertonic/how-supertonic-handles-natural-text-expressions-numbers-units)

Discover how Supertonic processes natural text, accurately synthesizing financial expressions, phone numbers, and technical units through its smart Unicode normalization pipeline.

- Tags: how-to-guide
- Published: 2026-05-14

### [Supertonic Text Chunking Algorithm: How It Splits Text for TTS](/supertone-inc/supertonic/supertonic-text-chunking-algorithm-and-sentence-splitting)

Discover the Supertonic text chunking algorithm. Learn how it splits text into manageable chunks for TTS, respecting model limits and using abbreviation-aware regex.

- Tags: internals
- Published: 2026-05-14

### [Implementing Streaming Synthesis with Supertonic: Real-Time ONNX TTS](/supertone-inc/supertonic/implementing-streaming-synthesis-with-supertonic)

Implement streaming synthesis with Supertonic for real-time ONNX TTS. Process text chunks incrementally and get PCM buffers before the utterance completes.

- Tags: how-to-guide
- Published: 2026-05-14

### [Supertonic Model Architecture Explained: Duration Predictor, Text Encoder, Vector Estimator, and Vocoder](/supertone-inc/supertonic/what-is-the-supertonic-model-architecture)

Explore the Supertonic model architecture and its four key components: duration predictor, text encoder, vector estimator, and vocoder. Convert text to audio on-device with this ONNX pipeline.

- Tags: architecture
- Published: 2026-05-14

### [Using Supertonic Across Different Programming Languages: A Cross-Platform TTS Guide](/supertone-inc/supertonic/using-supertonic-across-different-programming-languages)

Master Supertonic for cross-platform TTS. Achieve consistent on-device speech synthesis in Python, Node.js, Rust, Java, Go, C++, C#, Swift, and Flutter with our uniform API.

- Tags: how-to-guide
- Published: 2026-05-14

### [Supertonic WAV Output Format and Audio Parameters: A Deep Dive into the TTS Audio Pipeline](/supertone-inc/supertonic/supertonic-wav-output-format-and-audio-parameters)

Explore the Supertonic WAV output format and audio parameters. Understand its PCM encoding, 16-bit depth, and configurable sample rates for high-quality TTS audio generation.

- Tags: deep-dive
- Published: 2026-05-14

### [Debugging Synthesis Errors and Common Issues in Supertonic](/supertone-inc/supertonic/debugging-synthesis-errors-and-common-issues-in-supertonic)

Troubleshoot Supertonic synthesis errors by diagnosing common issues like mismatched language codes, incorrect voice ratios, and missing ONNX assets. Trace the pipeline to resolve problems effectively.

- Tags: how-to-guide
- Published: 2026-05-14

### [Deploying Supertonic on Edge Devices Like Raspberry Pi: A Complete Guide](/supertone-inc/supertonic/deploying-supertonic-on-edge-devices-like-raspberry-pi)

Deploy Supertonic on Raspberry Pi for real-time text-to-speech synthesis. This powerful ONNX Runtime engine requires only 300MB storage and 500MB RAM, no GPU needed!

- Tags: how-to-guide
- Published: 2026-05-14

### [Integrating Supertonic with Flutter for Cross-Platform TTS Apps](/supertone-inc/supertonic/integrating-supertonic-with-flutter-for-cross-platform-apps)

Integrate Supertonic with Flutter for powerful cross-platform TTS apps. Achieve on-device speech synthesis on macOS, Windows, Linux, Android, and iOS without network dependencies.

- Tags: how-to-guide
- Published: 2026-05-14

### [How Supertonic Compares to Other On-Device TTS Systems: Architecture and Performance Analysis](/supertone-inc/supertonic/how-does-supertonic-compare-to-other-on-device-tts-systems)

Compare Supertonic to other on-device TTS systems. Discover how its lightweight architecture and ONNX Runtime optimization achieve superior performance with 31 languages across 12+ platforms.

- Tags: comparison
- Published: 2026-05-14

### [Supertonic Expressive Tags: Adding Laughter, Breathing, and Sighs to Synthesized Speech](/supertone-inc/supertonic/supertonic-expressive-tags-for-laughter-breathing-and-sighs)

Enhance synthesized speech with Supertonic expressive tags. Add natural laughter, breathing, and sighs to text directly for more lifelike audio without extra API calls.

- Tags: feature-explanation
- Published: 2026-05-14

### [How to Handle Long Text Synthesis with Text Chunking in Supertonic](/supertone-inc/supertonic/how-to-handle-long-text-synthesis-with-text-chunking-in-supertonic)

Learn how Supertonic expertly handles long text synthesis using automatic, intelligent text chunking. Get seamless audio from your lengthy documents.

- Tags: how-to-guide
- Published: 2026-05-14

### [Supertonic Performance Optimization for Production Deployments: A Complete Guide](/supertone-inc/supertonic/supertonic-performance-optimization-for-production-deployments)

Optimize Supertonic performance for production deployments. Achieve sub-50ms CPU and sub-10ms GPU latency with ONNX optimization, mmap, pinned threads, and singleton sessions.

- Tags: performance-guide
- Published: 2026-05-14

### [How to Create Custom Voice Styles for Supertonic: A Step-by-Step Guide](/supertone-inc/supertonic/how-to-create-custom-voice-styles-for-supertonic)

Learn how to create custom voice styles for Supertonic with this step by step guide. Author a JSON file place it in assets voice_styles and reference it via the web UI or CLI.

- Tags: how-to-guide
- Published: 2026-05-14

### [Supertonic Text Preprocessing and Unicode Normalization: Complete Pipeline Guide](/supertone-inc/supertonic/supertonic-text-preprocessing-and-unicode-normalization)

Learn the Supertonic text preprocessing and Unicode normalization pipeline. Convert raw text to clean Unicode for ONNX TTS models with this complete guide.

- Tags: how-to-guide
- Published: 2026-05-14

### [Understanding the total_step Denoising Parameter in Supertonic](/supertone-inc/supertonic/understanding-the-total-step-denoising-parameter-in-supertonic)

Master the total_step denoising parameter in Supertonic to enhance audio fidelity and optimize inference speed in speech synthesis. Learn how this key setting impacts your results.

- Tags: deep-dive
- Published: 2026-05-14

### [How to Control Speech Speed with the Speed Parameter in Supertonic](/supertone-inc/supertonic/how-to-control-speech-speed-with-the-speed-parameter-in-supertonic)

Easily control speech speed in Supertonic using the speed parameter. Learn how this simple setting adjusts phoneme durations for precise vocal control and improved clarity. Get started today.

- Tags: how-to-guide
- Published: 2026-05-14

### [Supertonic Language Codes: Complete List of 30 Supported Languages](/supertone-inc/supertonic/what-are-the-supertonic-language-codes-and-supported-languages)

Explore Supertonic's 30 supported languages and their ISO-639-1 codes. Find the complete list and validation logic for web and Node.js SDKs in our comprehensive guide.

- Tags: api-reference
- Published: 2026-05-14

### [How to Switch Between CPU and GPU Execution Providers in Supertonic](/supertone-inc/supertonic/how-to-switch-between-cpu-and-gpu-execution-providers-in-supertonic)

Learn to switch between CPU and GPU execution providers in Supertonic. Install onnxruntime-gpu, update helper.py, and set use_gpu=True for faster model loading.

- Tags: how-to-guide
- Published: 2026-05-14

### [Supertonic ONNX Runtime Configuration and Execution Providers: A Cross-Platform Setup Guide](/supertone-inc/supertonic/supertonic-onnx-runtime-configuration-and-execution-providers)

Master Supertonic ONNX Runtime configuration and execution providers for cross-platform TTS. Our guide simplifies setup across Python, Web, Swift, and Rust, focusing on CPU optimization.

- Tags: how-to-guide
- Published: 2026-05-14

### [How to Load and Use Voice Styles in Supertonic TTS: A Complete Guide](/supertone-inc/supertonic/how-to-load-and-use-voice-styles-in-supertonic-tts)

Learn to load and use voice styles in Supertonic TTS. This guide shows how to utilize style tensors via language helpers for speaker-specific synthesis.

- Tags: how-to-guide
- Published: 2026-05-14

### [How to Implement Batch Processing for Multiple Texts in Supertonic: A Complete Guide](/supertone-inc/supertonic/how-to-implement-batch-processing-for-multiple-texts-in-supertonic)

Learn how to implement batch processing for multiple texts in Supertonic using the batch method. Efficiently process texts with parallel lists and concatenate waveforms with silence padding.

- Tags: how-to-guide
- Published: 2026-05-14