Transducer transient response is fully predictable from its amplitude response

Evidence

Loudspeaker transducers were found to be minimum-phase devices within their operating bandwidths, meaning that the time-domain, transient response behavior is predictable from the amplitude response. “Massless” film diaphragms don’t move faster than conventional cones and domes covering the same bandwidth—it is the strength of the motor that makes the difference. I now have a massive electric luxury sedan that accelerates more rapidly than most many-cylinder turbocharged lightweight sports cars—it’s a horsepower/torque-to-mass matter. The high frequency limit revealed by the amplitude response defines the rise time. Instinct is wrong yet again. — , Toole, Floyd E - Sound reproduction-…, 506

Categorization

• SHARE: Send to anyone into audio engineering who still believes fancy ‘fast’ diaphragm materials are about speed — the motor strength, not mass, determines it.
• XREF: connects to: Subwoofer time-domain speed is set by amplitude response, not driver design

Related

• Subwoofer time-domain speed is set by amplitude response, not driver design (similarity 0.91)
• High-frequency drivers need far less motion than low-frequency drivers to radiate similar loudness. (similarity 0.81)
• Frequency, phase, and impulse responses are mathematically interchangeable descriptions of linear behavior. (similarity 0.79)
• Phase response stops being audible once sound leaves the loudspeaker (similarity 0.79)
• Panel loudspeakers’ low-mass diaphragms do not actually respond faster than conventional coils (similarity 0.78)
• Subwoofers aid rather than harm good sound reproduction (similarity 0.78)
• Amplitude bumps in transducers imply predictable phase anomalies and time ringing. (similarity 0.78)
• Loudspeaker diaphragms support distributed resonances beyond lumped-element models (similarity 0.78)