@sherpaw/vad-asr

A WebAssembly (WASM) wrapper for VAD + offline ASR with sherpa-onnx.

Quick start

import { CircularBuffer, createVad, initVADASRModule, OfflineRecognizer } from '@sherpaw/vad-asr'

const module = await initVADASRModule()

const vad = createVad(module, {
  sileroVad: { model: './silero_vad.onnx' },
  sampleRate: 16000,
  numThreads: 1,
  provider: 'cpu',
  debug: 0,
  bufferSizeInSeconds: 30,
})

const recognizer = new OfflineRecognizer(
  {
    modelConfig: {
      tokens: './tokens.txt',
      numThreads: 1,
      provider: 'cpu',
      debug: 0,
      paraformer: { model: './paraformer.onnx' },
    },
  },
  module,
)

const circularBuffer = new CircularBuffer(30 * 16000, module)

Notes

• The prebuilt files are generated by the native build in sherpa-onnx/: packages/vad-asr/src/prebuilt/vad-asr.js and packages/vad-asr/src/prebuilt/vad-asr.wasm.
• Upstream VAD-ASR reference: sherpa-onnx/upstream/wasm/vad-asr.

License

Copyright 2025 Makito

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.