works.
InFormant
real-time voice analysis and synthesis desktop application with pitch and formant analysis. displays information as overlaid tracks on a scrolling 2D spectrogram.
BabbleSynth
parametric speech synthesiser specialised towards streamlining game asset generation, particularly character dialogue sound effects. very customisable because of its intended use in character design.
intonation practice tool
client-side web application to extract pitch contour information from an audio file and resynthesise a simple pitch drone with the same intonation, has an optional pitch shift setting.
voice synth
client-side web application for low-level voice synthesis with configurable glottal source and vocal tract resonances, has various presets for different genders and gender expressions, as well as a visual representation of the vocal tract filter.