Marvel GEQ is a linear-phase 16-band graphic equalizer. While it is 16 bands rather than 32, it offers professional-grade transparency and "full feature" capabilities for music production and critical listening.
You can eliminate a specific microphone ring or room resonance without changing the overall tone. 32 band graphic equalizer free download
While not strictly a "graphic" equalizer in the traditional fader sense, MEqualizer can be configured to act as one. Marvel GEQ is a linear-phase 16-band graphic equalizer