Notched-noise masking quantifies frequency selectivity as equivalent rectangular bandwidth

Evidence

FRES Task The notched-noise masking method (Patterson et al. 1982 ) was employed to evaluate frequency selectivity. The signals were pure-tone busts centred at 1100 or 4000 Hz, and the maskers were notched noises with varying notch width (0, 0.05, 0.1, 0.2, 0.3, and 0.4 relative to the signal frequency). The spectrum level within the passband was 40 dB SPL. A rounded-exponential filter (Patterson et al. 1982 ) was fitted to the experimental data using a least-square fit. The equivalent rectangular bandwidth (ERB ) was then derived from the parameters of the fitted filter. — Dijk, Pim van, Physiology, Psychoacoustics and…, 1043

Categorization

• DEFINE: Explains how the notched-noise method uses roex-filter fitting to derive ERB, the standard frequency-selectivity metric.
• XREF: The roex/notched-noise method and ERB connect to general psychoacoustics texts (e.g., Moore) that define auditory filter analysis.
• corroborated: 2 independent passages support this claim — Dijk, Pim van, Physiology, Psychoacoustics and…, 1043