audio: overload keeps each part's MONO lead and lowest POLY note                  ok
audio: overload frees its victim within one control block                         ok
audio: a lead alone on each part stays protected                                  ok
audio: overload frees a held one-shot drum without waiting for its decay          ok
audio: UNISON loses an extra voice and retains its lead                           ok
audio: overload can reclaim stale POLY voices after a MONO / LEGATO change        ok
audio: overload can reclaim stale POLY voices after a MONO / LEGATO change        ok
audio: released voices shed the quieter tail first                                ok
audio: an auxiliary interrupt does not render a DMA half                          ok
audio: one slow half records elapsed load but does not shed yet                   ok
audio: a second slow half in a row requests shedding                              ok
audio: DMA advancing during a render is counted once                              ok
audio: TIMER5 nested in the render counts toward the deadline                     ok
audio: slow halves that are not consecutive do not shed                           ok
audio: steady CPU load converges without integer smoothing bias                   ok
audio: all passed
