Long-form narration

import os
from supertone import Supertone

VOICE_ID = "20160a4c5ba38967330c84"  # replace with your voice ID

SCRIPT = """
Chapter one. The clocktower struck midnight, and the wind through the old
square carried whispers from the workshops below. Hana adjusted her coat,
checked the address one more time, and stepped through the iron gate.

Inside, the air smelled of copper and lemon polish. Rows of half-finished
automatons stared back from the shelves, each one waiting for a name. She
set her satchel on the bench and opened her notebook to a fresh page.

By dawn, the room had changed. One of the figures by the window was no
longer half-finished, and Hana, very quietly, was no longer alone.
""".strip()

with Supertone(api_key=os.environ["SUPERTONE_API_KEY"]) as client:
    response = client.text_to_speech.create_speech(
        voice_id=VOICE_ID,
        text=SCRIPT,
        language="en",
        model="sona_speech_2",
        voice_settings={"pitch_variance": 0.9, "speed": 0.95},
    )

    with open("narration.wav", "wb") as f:
        f.write(response.result.read())

print("Saved narration.wav")

import { Supertone } from "@supertone/supertone";
import * as fs from "node:fs";

const VOICE_ID = "20160a4c5ba38967330c84"; // replace with your voice ID

const SCRIPT = `
Chapter one. The clocktower struck midnight, and the wind through the old
square carried whispers from the workshops below. Hana adjusted her coat,
checked the address one more time, and stepped through the iron gate.

Inside, the air smelled of copper and lemon polish. Rows of half-finished
automatons stared back from the shelves, each one waiting for a name. She
set her satchel on the bench and opened her notebook to a fresh page.

By dawn, the room had changed. One of the figures by the window was no
longer half-finished, and Hana, very quietly, was no longer alone.
`.trim();

const client = new Supertone({ apiKey: process.env.SUPERTONE_API_KEY });

const response = await client.textToSpeech.createSpeech({
  voiceId: VOICE_ID,
  apiConvertTextToSpeechUsingCharacterRequest: {
    text: SCRIPT,
    language: "en",
    model: "sona_speech_2",
    voiceSettings: { pitchVariance: 0.9, speed: 0.95 },
  },
});

if (response.result instanceof Uint8Array) {
  fs.writeFileSync("narration.wav", response.result);
} else if (response.result && "getReader" in response.result) {
  const reader = (response.result as ReadableStream<Uint8Array>).getReader();
  const chunks: Uint8Array[] = [];
  while (true) {
    const { done, value } = await reader.read();
    if (done) break;
    if (value) chunks.push(value);
  }
  fs.writeFileSync("narration.wav", Buffer.concat(chunks));
}

console.log("Saved narration.wav");