Crate wavekat_tts 

Unified text-to-speech for voice pipelines.

Provides a clean abstraction over TTS engines — both local models and cloud APIs — behind common Rust traits. Same pattern as wavekat-vad and wavekat-turn.

All backends produce AudioFrame<'static> from wavekat-core, keeping audio abstract across the WaveKat ecosystem.

Architecture

wavekat-vad   →  "is someone speaking?"
wavekat-turn  →  "are they done speaking?"
wavekat-tts   →  "synthesize the response"
     │                   │                     │
     └───────────────────┴─────────────────────┘
                         │
               AudioFrame (wavekat-core)

Feature flags

Backends

Feature	Backend	Multilingual	Requires
qwen3-tts	Qwen3-TTS (ONNX)	10 languages	ONNX model download
cosyvoice	CosyVoice (ONNX)	Yes	ONNX model download

Execution providers

Composable with any backend feature. Selects the inference hardware at build time.

Feature	Provider	Platform
cuda	NVIDIA CUDA	Linux / Windows
tensorrt	NVIDIA TensorRT	Linux / Windows
coreml	Apple CoreML	macOS / iOS

Quick start

[dependencies]
wavekat-tts = { version = "0.0.1", features = ["qwen3-tts"] }

use wavekat_tts::{TtsBackend, SynthesizeRequest};
use wavekat_tts::backends::qwen3_tts::Qwen3Tts;

let tts = Qwen3Tts::new("path/to/model.onnx")?;
let request = SynthesizeRequest::new("我觉得这个方案");
let audio = tts.synthesize(&request)?;
// audio: AudioFrame<'static> at 24kHz

Modules

backends

Backend implementations for various TTS engines.

Structs

AudioFrame

A frame of audio samples with associated sample rate.

SynthesizeRequest

A TTS synthesis request.

VoiceInfo

Metadata about a voice available in a backend.

Enums

Gender

Voice gender hint.

TtsError

Errors produced by TTS backends.

Traits

StreamingTtsBackend

Streaming TTS backend: text in, AudioFrame<'static> chunks out.

TtsBackend

Batch TTS backend: text in, AudioFrame<'static> out.