Make api request sonic2 bytes javascript steps

API を呼び出す
// hello.js
import { CartesiaClient } from "@cartesia/cartesia-js";
import fs from "node:fs";
import { spawn } from "node:child_process";
import process from "node:process";

if (!process.env.CARTESIA_API_KEY) {
  throw new Error("CARTESIA_API_KEY is not set");
}

// Set up the client.
const client = new CartesiaClient({
  apiKey: process.env.CARTESIA_API_KEY,
});

// Make the API call.
const response = await client.tts.bytes({
  modelId: "sonic-2",
  voice: {
    mode: "id",
    id: "a0e99841-438c-4a64-b679-ae501e7d6091",
  },
  outputFormat: {
    container: "wav",
    encoding: "pcm_f32le",
    sampleRate: 44100,
  },
  transcript: "Welcome to Cartesia Sonic!",
});

// Write `response` (of type ArrayBuffer) to a file.
fs.writeFileSync("sonic-2.wav", new Uint8Array(response));

// Play the file.
spawn("ffplay", ["-autoexit", "-nodisp", "sonic-2.wav"]);