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✦ Free & open sourceConstruction

MockingBird

Clone a voice in 5 seconds to generate arbitrary speech in real-time.

Real-Time Voice Cloning AI

Clone voices in 5 seconds and generate custom speech in real-time using PyTorch.

Free forever · open source · MIT
✓ Needs IT✓ Browser-based✓ Real-time collaboration
5.9
ZEKAI
Powerful voice cloning tool
Free & open source · Construction
Ease of setup4
Usefulness5
Maintenance5.5
Community9.2
★ 36,884
GITHUB
Mar 2026
UPDATED
MIT
LICENSE
🛠 Don't want to self-host? We can set it up →
⚡ Quick answer

MockingBird is a real-time voice cloning and text-to-speech toolkit built on PyTorch. It suits civil engineering teams and technical professionals needing rapid localized audio generation for project presentations or site warnings.

Runs on
Cross-platform
Hosting
Desktop
Languages
Python
License
MIT

What it is

It processes audio datasets and mel spectrograms to train custom encoders, synthesizers, and vocoders. You can reuse pretrained encoders while adapting the synthesizer for specific Mandarin dialects or multi-dataset inputs.

Who it's for

It suits Python developers and technical specialists with deep learning experience. It does not suit non-technical users looking for a simple out-of-the-box text-to-speech mobile app.

Key features

5-Second Voice Cloning

Clone a target voice using just a 5-second audio sample.

PyTorch 1.9.0 Support

Built and tested using PyTorch with GPU support like Tesla T4 and GTX 2060.

Webserver Ready

Serve your generated speech results easily with remote calling endpoints.

Multi-Dataset Training

Preprocess and train with Chinese datasets like aidatatang_200zh, magicdata, and aishell3.

How to start

Up and running in 3 steps

1
Install Python 3.7 or higher, PyTorch, and ffmpeg dependencies.
2
Run pip install -r requirements.txt or create an environment using conda or mamba.
3
Preprocess your audio datasets and train or load a pretrained synthesizer model.
Real talk

Our honest verdict

What's great

  • Clones arbitrary voices from very short 5-second audio samples
  • Supports webserver deployment for remote API calling
  • Includes specific setup documentation for M1 Macs using Rosetta
  • Reuses pretrained encoders and vocoders to simplify training

Where it falls short

  • Requires manual compilation of dependencies like pyworld and ctc-segmentation on M1 Macs
  • Training custom synthesizers requires downloading external datasets and managing checkpoints
  • Original CLI tool is incompatible with Chinese symbols, requiring custom model paths
Cost

Pricing & license

Free under its MIT licence. Additionally, the original author offers a cloud-hosted optimized version called noiz.ai.

Paid work

Open remote AI-training roles

766 open remote AI-training roles, updated November 14, 2026; most pay $20–$175 an hour. Zekai lists them free; the application goes to the employer’s platform.

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Questions

FAQ

Does this tool support English?

The repository mentions English support alongside Mandarin, though testing heavily focuses on Chinese datasets and models.

Can I run this on an Apple Silicon Mac?

Yes, but you must follow specific workarounds involving Rosetta 2 terminal setups and manual source compilation for certain packages.

Radar

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