Hearing’s fine frequency resolution may be modeled at coarser steps in practice

Evidence

Specific loudness as a function of critical-band rate is given in all of the figures as a cont.inuous curve. This corresponds to the very fine frequency resolution of our hearing system. Critical bands have been used as if they can be shift.ed along the critical-band rate t.o any place. In many practical cases however, it may not be necessary to have as many as 640 critical-band filters (corresponding to t. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 1285

Categorization

Category: Factual Claims

• QUESTION: The passage trails off mid-sentence about 640 filters — how many critical-band filters do practical loudness models actually use?

Related

• Continuous loudness curves assume the ear has hundreds of movable critical-band filters (similarity 0.91)
• Hearing selectivity is modeled via critical-band and excitation intermediate values (similarity 0.85)
• The human hearing system compromises between frequency and time resolution, unlike ideal filters (similarity 0.85)
• Critical bandwidth varies a hundredfold across the audible range. (similarity 0.84)
• Narrow-band noise produces substantial loudness in critical-band regions where no physical sound exists (similarity 0.84)
• The critical band model fails because selectivity varies with level and asymmetry. (similarity 0.84)
• The ear’s frequency selectivity worsens as frequency rises above 500 Hz. (similarity 0.83)
• Auditory critical bandwidth stays constant at 100 Hz below 500 Hz then rises proportionally. (similarity 0.83)
• The ear’s frequency response is level-dependent, favoring mid frequencies at low volume (similarity 0.83)
• Frequency discrimination is finest around 0.3% near 500 Hz. (similarity 0.83)
• Critical-band and excitation levels are intermediate model values expressed logarithmically. (similarity 0.82)
• The critical-band-rate scale mirrors hearing better than raw frequency (similarity 0.82)
• Critical bandwidth at 1 kHz is 160 Hz and governs loudness behavior (similarity 0.82)
• Critical-band rate and excitation level are the intermediate transforms for hearing models (similarity 0.82)
• Phase-change sensitivity in hearing is bounded by critical bandwidth, scaling with centre frequency. (similarity 0.82)