SDK for voice processing

High-quality, efficient and cheap

For SaaS

  • Pitch shifting
  • Time stretching
  • Spectral envelope stretching
  • Pitch variance scaling / Expressiveness scaling

For Music plugins

  • Constant or time-variable pitch shifting
  • Constant or time-variable time stretching
  • Spectral envelope stretching
  • Autotune / Pitch correction
  • Pitch variance scaling / Expressiveness scaling

Technical features

  • Can process any monophonic signals (voice and any music instruments like saxophone, flute, etc.)
  • Python SDK for offline processing (no real-time, no streaming modes)
  • C++ and Swift SDKs for both real-time, streaming and offline processing
  • Neutral parameters leads to perfect reconstruction (err<-200dB)
  • Very low memory usage
  • No dynamic memory allocation
  • Known and constant latency
  • Contact us to request wrappers for other languages!

Quick setup

Follow these steps to register and run a quick example.

  • 1.Install the Python package.
    $pip3 install pitchmeld
  • 2.Create an account here.
  • 3.Create an API key in your dashboard here.
  • 4.Set the API key in your environment.
    $export PITCHMELD_KEY=your_api_key_here
  • 5.Start using the Python package.
    $python3 -c "import pitchmeld; print(pitchmeld.__version__)"
  • and you're all set!
  • Run a quick example: load audio, pitch shift up by 1 octave, and save.Save the following in a .py file and run it with python:
    import soundfile as sf
    import pitchmeld as pm
    audio, sr = sf.read("input.wav")
    shifted = pm.process(audio, sr, psf=2)
    sf.write("output.wav", shifted, sr)

Pricing

Choose the plan that works best for you.

Free

For testing purpose
  • Python SDK
  • No support
  • Limited to 30min processing / month
  • No parallel processing
  • No real-time nor streaming processing
    • $0.00 / month
    Recommended

    Pro

    Regular user
  • Python SDK
  • High-priority support
  • Unlimited processing
  • No parallel processing
  • No real-time nor streaming processing
    • 14 days free trial
    $10.00 / month

    Enterprise

    Everything that's available
  • Python SDK
  • High-priority support
  • Unlimited processing
  • Unlimited parallel processing
  • Real-time and streaming processing
  • C SDK
  • Swift SDK
  • Disconnected SDKs
  • Custom support and services
  • Custom features