ABR Documentation
Nith Text-to-Speech#
Nith is a family of text-to-speech models optimized for local, real-time speech synthesis. All processing runs on-device, with no cloud dependency.
Nith begins vocalization as soon as the first text buffer is received, delivering natural-sounding speech on resource-constrained edge hardware.
Key Features#
Low-latency: Text is processed in small buffers so vocalizations start quickly
Private: All speech synthesis runs locally; no text is sent to the cloud
Small footprint, high quality: Natural-sounding speech from models that run on edge hardware
Custom vocabulary: Specific pronunciation of brand names, technical jargon, and domain- or application-specific words can be added without retraining
Multi-language: English, Spanish, Chinese (Mandarin), Japanese, and Korean; additional languages available upon request
Premium Features
Custom voices: New TTS voices can be created from a 6-second audio clip
Models#
Select a model based on your language requirements. All models accept text input, output raw 16 kHz mono PCM audio with no file headers, and have both male and female versions.
| nith-5m-live.en | nith-5m-live.es | nith-5m-live.zh | nith-5m-live.ja | nith-5m-live.ko | ||
|---|---|---|---|---|---|---|
| Language | English | Spanish | Chinese (Mandarin) | Japanese | Korean | |
| Specs | Quantization | Mixed 8/32-bit | ||||
About the Name#
ABR names its model families after rivers. State space models process sequential data as a continuous flow, always moving forward and maintaining state efficiently over time. The Nith model family is named for the river near ABR’s hometown of Waterloo, Ontario, Canada.