Parametric equalization of minimum-phase resonances also reduces time-domain ringing

Evidence

In “minimum-phase” systems and devices the time-domain behavior, the transient response, is predictable from the frequency response alone, which may seem like magic but is real. Fortunately for those of us concerned with sound reproduction, loudspeaker transducers within their operating ranges (not the crossover regions of multi-way systems) and prominent low-frequency resonances in small rooms behave as minimum-phase systems. This means that simple parametric equalizers can be used to attenuate resonances in transducers at any frequency and conspicuous resonances in rooms at low frequencies, with the result that the time-domain misbehavior (ringing) is reduced when resonant peaks are reduced. — Toole, Floyd E, Sound reproduction- the acoustics and…, 104

Categorization

• DEFINE: Defines ‘minimum-phase’ systems: ones where transient response is predictable from frequency response alone.
• XREF: Connects to the well-known concept in digital audio DSP that simple EQ can fix ringing in min-phase resonators — echoes the ‘phase is linked to magnitude’ insight familiar from IIR filter design.