Matrix - The Voice Coder is "The Vocoder for the 21st century".

What makes Matrix different to the vocoders in the past?

• Precise analog modelling 8-pole filters and extremely fast envelope followers for unprecedented resynthesis quality.
• New voiced/unvoiced detection and pitch extraction algorithms for high intelligibility.
• Stereophonic synthesis filter bank preserves the spatial characteristic of the replacement signal.
• Easy to use interface.
• Latency free operation.

Features:

• 32 channel filter bank.
• Stereophonic synthesis.
• Voiced/unvoiced detection.
• Pitch tracking.
• Formant shift.
• Pause filling.
• Channel matrix.
• Pan position and level for each channel.
• 16 internal oscillators.
• Easy user interface.

New in v1.2.1

• New Features: Internal generator can now be used without MIDI note input.
• New Features: Line draw mode for channel matrix with shift+drag.
• New Features: AudioUnit standard effect without MIDI added.
• New Features: AudioUnit mono effect added.
• Bug fixes: MIDI learn was broken in VST 2.4 / AudioUnit versions.