Custom Voices

Overview

Create custom voice profiles that match your brand identity or clone specific voices for personalized experiences. Our voice cloning technology requires just a few minutes of audio to create a high-quality custom voice.

Creating a Custom Voice

Each workspace can keep a set number of instant (cloned) voices, depending on its plan: 1 on Free, Starter and Flow, 10 on Creator and Pro. The limit counts the voices you have now, so deleting a voice frees a slot. Over the limit, POST /voices returns 403 with code VOICE_LIMIT_REACHED. See Pricing for every plan.

Requirements

Audio Samples

Minimum: 3 audio files
Maximum: 10 audio files
Duration: 10-60 seconds per file
Total: At least 2 minutes combined
Format: MP3, WAV, or FLAC
Quality: 44.1kHz+ sample rate recommended

Step-by-Step Guide

Prepare Audio Samples

Record or collect 3-10 high-quality audio samples of the voice you want to clone

Upload Samples

Use the API or dashboard to upload your audio files

Wait for Processing

Voice cloning typically takes 10-15 minutes

Test Your Voice

Generate test audio to verify quality

Use in Production

Start using your custom voice in your applications

Code Examples

JavaScript
Python

import { SixtyDBClient } from '60db-service';

const client = new SixtyDBClient('your-api-key');

// Create custom voice
const files = [
  document.querySelector('#file1').files[0],
  document.querySelector('#file2').files[0],
  document.querySelector('#file3').files[0]
];

const voice = await client.createVoice({
  name: 'My Brand Voice',
  description: 'Professional voice for customer service',
  language: 'en',
  gender: 'female',
  files: files
});

console.log('Voice ID:', voice.id);
console.log('Status:', voice.status);

// Use the custom voice
const audio = await client.textToSpeech({
  text: 'Hello from my custom voice!',
  voice_id: voice.id
});

from sixtydb import SixtyDBClient

client = SixtyDBClient('your-api-key')

# Create custom voice
files = [
    open('sample1.mp3', 'rb'),
    open('sample2.mp3', 'rb'),
    open('sample3.mp3', 'rb')
]

voice = client.create_voice(
    name='My Brand Voice',
    files=files,
    description='Professional voice for customer service',
    language='en',
    gender='female'
)

print(f"Voice ID: {voice['id']}")
print(f"Status: {voice['status']}")

# Close files
for f in files:
    f.close()

# Use the custom voice
audio = client.text_to_speech(
    text='Hello from my custom voice!',
    voice_id=voice['id']
)

with open('output.mp3', 'wb') as f:
    f.write(audio)

Audio Sample Guidelines

Content Recommendations

Variety

Include different sentence types (questions, statements, exclamations)
Cover various emotions and tones
Use different speaking speeds
Include both short and long sentences

Quality

Record in a quiet environment
Use a good quality microphone
Maintain consistent volume
Avoid background music or noise
No echo or reverb

Technical

Sample rate: 44.1kHz or higher
Bit depth: 16-bit or higher
Format: WAV (lossless) preferred
Mono or stereo both acceptable

Content

Natural, conversational speech
Clear pronunciation
Consistent accent
Avoid reading in monotone
Include natural pauses

Professional Voice Clones

A professional clone is trained on longer recordings for higher quality. Create one in the app from Voice Library → Professional voice: Professional voices are available on the Creator (2 voices) and Pro (5 voices) plans. Voices that are training, live, private or in marketplace review count toward the limit; deleting a voice, or a failed or rejected one, frees the slot. On other plans the page shows an upgrade card instead of the form.

Intro: name the voice and choose its languages, gender and accent.
Upload: upload at least 10 minutes of clean speech (WAV, MP3, M4A, FLAC or OGG; one file or many).
Verify: record a short live sample (about 10 seconds) so we can confirm the voice is yours.
Review: check the details and submit for training.

Training runs overnight and usually takes 1 to 4 hours. When it finishes, the voice is ready to use from your Voices list. Marketplace listing is optional. On the Review step, tick List my voice in the marketplace to have our team review it; once approved it is listed with the 60dB Quality Checked badge and you earn 12% of paid usage. Leave it unticked to keep the voice private. A private voice can be submitted to the marketplace later from its status card, without retraining. Marketplace requirements. To list a voice in the marketplace you need:

A Creator or Pro plan.
KYC: your tax form (PAN for India, W-9 for US taxpayers, W-8BEN for everyone else). Open the user menu → Payouts → Complete KYC (tax details), enter your tax ID and upload the form.
Bank details for payouts. Open the user menu → Payouts → Add bank details.

The voice creation page shows this checklist with links, and Get Marketplace Eligibility returns it from the API. You can submit once your KYC and bank details are filed, even while they are still under review. The voice goes live only after your KYC is verified and your bank details are active. If you move to a smaller plan, your existing voices stay, but you can’t create or list new ones until you are back under the limit.

Managing Custom Voices

List Your Voices

const voices = await client.getVoices();

// Filter custom voices
const customVoices = voices.filter(v => v.is_custom);
customVoices.forEach(voice => {
  console.log(`${voice.name} (${voice.id})`);
});

Update Voice Metadata

await client.updateVoice('voice-id', {
  name: 'Updated Voice Name',
  description: 'Updated description'
});

Delete a Voice

await client.deleteVoice('voice-id');

Voice Quality Tips

Recording Environment

Record in a quiet room with minimal echo and background noise

Microphone Quality

Use a quality microphone for best results

Speaking Style

Speak naturally and expressively

Audio Length

Provide at least 2 minutes of total audio

Use Cases

Brand Voice

Create a consistent voice for all your brand communications:

const brandVoice = await client.createVoice({
  name: 'Acme Brand Voice',
  description: 'Official voice for Acme Corporation',
  files: brandAudioSamples
});

// Use in all customer touchpoints
const greeting = await client.textToSpeech({
  text: 'Welcome to Acme Corporation. How can we help you today?',
  voice_id: brandVoice.id
});

Personal Assistant

Clone your own voice for a personalized assistant:

const myVoice = await client.createVoice({
  name: 'My Personal Voice',
  description: 'My voice for personal assistant',
  files: myRecordings
});

// Personal reminders in your own voice
const reminder = await client.textToSpeech({
  text: 'Remember to call mom at 3 PM',
  voice_id: myVoice.id
});

Character Voices

Create unique voices for game characters or audiobooks:

const characterVoice = await client.createVoice({
  name: 'Wizard Character',
  description: 'Mystical wizard voice for fantasy game',
  files: characterSamples
});

Pricing

Voice limits per workspace:

Plan	Instant voices	Professional voices
Free	1	-
Starter	1	-
Flow	1	-
Creator	10	2
Pro	10	5

Support can grant extra instant voices to a workspace. Voices you already had before a plan change are kept.

Get Started

SDKs

Core Features

Custom Voices

Overview

Creating a Custom Voice

Requirements

Audio Samples

Step-by-Step Guide

Code Examples

Audio Sample Guidelines

Content Recommendations

Professional Voice Clones

Managing Custom Voices

List Your Voices

Update Voice Metadata

Delete a Voice

Voice Quality Tips

Recording Environment

Microphone Quality

Speaking Style

Audio Length

Use Cases

Brand Voice

Personal Assistant

Character Voices

Pricing

API Reference

Create Voice

Manage Voices

​Overview

​Creating a Custom Voice

​Requirements

Audio Samples

​Step-by-Step Guide

​Code Examples

​Audio Sample Guidelines

​Content Recommendations

​Professional Voice Clones

​Managing Custom Voices

​List Your Voices

​Update Voice Metadata

​Delete a Voice

​Voice Quality Tips

Recording Environment

Microphone Quality

Speaking Style

Audio Length

​Use Cases

​Brand Voice

​Personal Assistant

​Character Voices

​Pricing

​API Reference

Create Voice

Manage Voices

Overview

Creating a Custom Voice

Requirements

Step-by-Step Guide

Code Examples

Audio Sample Guidelines

Content Recommendations

Professional Voice Clones

Managing Custom Voices

List Your Voices

Update Voice Metadata

Delete a Voice

Voice Quality Tips

Use Cases

Brand Voice

Personal Assistant

Character Voices

Pricing

API Reference