Cubic difference tones in hearing defy regular nonlinear transfer models

Evidence

A good example of a highly non-linear and time-variant system is human hearing. As a result, modelling of the auditory system is a complex task, and only some of its peripheral parts may be modelled in the LTI sense. — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 359 (#complicates, via linked claim)

Categorization

Category: Factual Claims

Related

• Human hearing resists linear time-invariant modeling except at the periphery (similarity 0.84)
• Neuron-by-neuron modelling of audition is computationally infeasible now (similarity 0.84)
• Human hearing is highly nonlinear and cannot be LTI-modelled beyond peripheral parts (similarity 0.83)
• Cubic difference tones reveal nonlinear cochlear mechanics even at low sound levels (similarity 0.82)
• Combination tones arise from the hearing system’s own nonlinearity (similarity 0.81)
• Cubic difference tones arise inside the ear, not in the equipment (similarity 0.81)
• Difference noise generated by ear nonlinearities can be heard before the test tone itself (similarity 0.81)
• Nonlinear cochlear mechanics make listeners perceive nonexistent difference tones (similarity 0.81)
• Cancellation equalizes internally produced combination tones with an external tone (similarity 0.80)
• Cubic difference tones form from summed wavelets traveling to a characteristic place (similarity 0.80)
• Noise-induced hearing loss can unmask audible difference tones (similarity 0.79)
• The ear becomes less nonlinear as sound levels rise (similarity 0.79)
• Hearing’s own nonlinearity produces audible difference tones even in distortion-free equipment (similarity 0.79)
• Nonlinear vibration generates new frequencies absent from the original stimulus (similarity 0.78)

Broader Connections

• Nonlinear cochlear mechanics make listeners perceive nonexistent difference tones #corroborates (0.90)
• Human hearing is highly nonlinear and cannot be LTI-modelled beyond peripheral parts #complicates (0.85) — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 359
• Cubic difference tones form from summed wavelets traveling to a characteristic place #expands (0.85)
• Hardware cochlear model reproduces measured difference-tone cancellation data closely #corroborates (0.80)
• Difference noise generated by ear nonlinearities can be heard before the test tone itself #expands (0.80)