Eventide Temperance Pro (ESD); reverb plugin; modal reverb system based on the 12-note chromatic scale for precise control over which notes are emphasized or attenuated within the spatial field; enables musically defined reverberation with accurate control over tonal behavior and spatial depth; Target Select with Early, Late, and All modes to define the timing of tempering; Note Width determines the spectral spread of individual notes for either pure or dense tonal textures; Temper and Range controls adjust the degree of tempering and the affected octave range; Note Selection Panel with three operating modes: Manual for individual note selection, Sequencer for programmable scale or chord progressions, and MIDI Mode for real-time control via MIDI keyboard; 29 algorithmic and convolution-based spaces in the modal domain including classic halls, plates, experimental synthetic spaces, and authentic recreations of legendary environments, some developed with Ralph Kessler; patented machine-learning technology converts traditional reverbs into the modal domain; Mix, Decay, and Size controls combined with modal parameters Position, Density, and Offset to shape spatial depth, mode density, and frequency offset; NoteScape Visualizer provides real-time visualization of active note behavior and Spectrum Analyzer displays precise modal distribution; additional functions include low-latency operation (<1 ms), full automation, reference tuning, dual-mono mode, input/output faders with level metering, Kill Dry switch, Notes Lock, Mix Lock, A/B comparison with copy function, Eco Mode, Undo/Redo, and bypass; includes over 60 presets, with 11 tutorial presets