Human hearing is highly nonlinear and cannot be LTI-modelled beyond peripheral parts
Evidence
An amplitude-modulated sound is described in two parts: the envelope (or modulator), the portion of the stimulus that slowly varies over time, and the fine structure (or carrier), the portion of the stimulus with rapid pressure fluctuations. — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 997 (
#expands, via linked claim)
Categorization
- corroborated: 3 independent passages support this claim
- XREF: connects to: Combination tones arise from the hearing system’s own nonlinearity — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 430; Cubic difference tones in hearing defy regular nonlinear transfer models; Convolution mathematically links LTI system inputs to outputs. (+4 more)
Related
- Cubic difference tones in hearing defy regular nonlinear transfer models (similarity 0.88)
- Human hearing resists linear time-invariant modeling except at the periphery (similarity 0.86)
- Amplitude-modulated sounds split into slow-varying envelope and fast-varying fine structure (similarity 0.86)
- The ear’s time-frequency resolution cannot be modeled by fixed-length frames (similarity 0.83)
- Neuron-by-neuron modelling of audition is computationally infeasible now (similarity 0.82)
- Combination tones arise from the hearing system’s own nonlinearity (similarity 0.81)
- Nonlinear cochlear mechanics make listeners perceive nonexistent difference tones (similarity 0.81)
- Two kinds of sound change activate different processing features in hearing (similarity 0.81)
- Difference noise generated by ear nonlinearities can be heard before the test tone itself (similarity 0.80)
- Normal hearing yields a temporal resolution factor near unity (similarity 0.80)
- Hearing’s own nonlinearity produces audible difference tones even in distortion-free equipment (similarity 0.80)
- Humans perceive extended sound sources poorly when their parts emit identical tones (similarity 0.80)
- What the ear perceives can diverge from sound’s physical components. (similarity 0.80)
- The TMTF yields three distinct measures of temporal resolution (similarity 0.80)
- The ear becomes less nonlinear as sound levels rise (similarity 0.79)
Broader Connections
- Nonlinear cochlear mechanics make listeners perceive nonexistent difference tones
#exemplifies(0.85) - The ear’s time-frequency resolution cannot be modeled by fixed-length frames
#expands(0.82) - Amplitude-modulated sounds split into slow-varying envelope and fast-varying fine structure
#expands(0.70) — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 997