node-openjtalk-binding

Simple binding of OpenJTalk.

Requirements

• Able to run node-gyp
• c++ 14 can be compiled.
• If you use Mac OS, 10.14 or later is required because std::get cannot use before 10.14.

Install

#npm
npm install node-openjtalk-binding
#yarn
yarn add node-openjtalk-binding

Example

const { synthesis } = require("node-openjtalk-binding");
const path = require("path");
const { promises: fs, readFileSync } = require("fs");
const path_to_htsvoice = path.resolve(__dirname, "hts_voice_nitech_jp_atr503_m001-1.05", "nitech_jp_atr503_m001.htsvoice");
const htsvoice = readFileSync(path_to_htsvoice);
synthesis("竹やぶ焼けた。", {
  htsvoice,
}).then(wave => {
  const wav = Buffer.alloc(wave.data.byteLength + 44);
  createWAV(new DataView(wav.buffer), wave);
  return fs.writeFile(path.resolve(__dirname, "example.wav"), wav);
});

/**
 * 
 * @param {DataView} view 
 * @param {import("node-openjtalk-binding").WaveObject} wave
 */
function createWAV(view, wave) {
  const blockSize = wave.numChannels * wave.bitDepth / 8;
  view.setUint32(0, 0x52494646);//"RIFF"
  view.setUint32(4, wave.data.byteLength + 44 - 8, true);
  view.setUint32(8, 0x57415645);//"WAVE"
  view.setUint32(12, 0x666D7420);//"fmt "
  view.setUint32(16, 16, true);//16(LE)
  view.setUint16(20, 1, true);//LINEAR PCM
  view.setUint16(22, wave.numChannels, true);
  view.setUint32(24, wave.sampleRate, true);
  view.setUint32(28, wave.sampleRate * blockSize, true);
  view.setUint16(32, blockSize, true);
  view.setUint16(34, wave.bitDepth, true);
  view.setUint32(36, 0x64617461);//"data"
  view.setUint32(40, wave.data.byteLength, true);
  let i = 44;
  for (const x of wave.data) {
    view.setInt16(i, x, true);
    i += 2;
  }
}

HTSVoice

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