# Introduction

Please refer to
https://k2-fsa.github.io/sherpa/onnx/android/index.html
for usage.

- [SherpaOnnx](./SherpaOnnx) It uses a streaming ASR model.

- [SherpaOnnx2Pass](./SherpaOnnx2Pass) It uses a streaming ASR model
  for the first pass and use a non-streaming ASR model for the second pass.

- [SherpaOnnxVad](./SherpaOnnxVad) It demonstrates how to use a VAD

- [SherpaOnnxVadAsr](./SherpaOnnxVadAsr) It uses a VAD with a non-streaming
  ASR model.

- [SherpaOnnxTts](./SherpaOnnxTts) It is for standalone text-to-speech.

- [SherpaOnnxTtsEngine](./SherpaOnnxTtsEngine) It is for text-to-speech engine;
   you can use it to replace the system TTS engine.