Stempel is a spectral vocoder.

It features three frequency domains effects:

• Linear frequency shifters on the 'carrier' and 'modulater' input.
• A 'two states morph-able' equalizer with various eq models (linear, bark, 12 tones scale).
• A magnitude mixer (amount of vocoding).

Frequency domain effects are ruled by various settings:

• FFT size.
• Number of overlapped FFTs.
• Spectral window type.
• Shifter warping type.

Two additional time domain effects can be applied to the vocoder:

• A saturator using the 'variable parabolic' shape.
• A standard chorus with a good quality delay object.

New in v1.100

• New spectral morphing mode which is totally replacing the previous vocoding operations.
• A few Magnitude or Angle morphing models are assignable to a new XY controller.
• New 'spectral clipping' option, to keep the morphing smooth.
• Updated the chorus parameters mapping.
• Note to users: old presets files are no more compatible, it's advisable to delete them.