Pure-tone and noise maskers produce diverging pulsation patterns only above 1 kHz.

Evidence

The results displayed in Fig. 4.38 indicate that lower slopes of pulsation patterns for pure tones, compared with critical-band wide noise, differ for maskers at 2 kHz and to a lesser degree for maskers at 4 kHz. At 0.4 and 1 kHz, the pulsation patterns of critical-band wide “masker” and pure tone “masker” yield similar patterns. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 607

Categorization

Category: Factual Claims

Related

• Pure-tone versus noise masking differences depend on masker frequency (similarity 0.97)
• Pulsation patterns can replicate masking patterns to under 1 dB accuracy (similarity 0.89)
• Shorter masker and test-tone durations flatten the lower slope of pulsation patterns (similarity 0.86)
• Pulsation patterns map test-tone level against frequency like masking patterns do (similarity 0.85)
• Two simultaneous maskers partition the spectrum where each dominates (similarity 0.85)
• Positive second derivative of masker drives low-frequency masking-period patterns (similarity 0.83)
• Masking pattern shapes differ by center frequency even at equal masker level (similarity 0.83)
• Masking depends on stimulus fluctuations in ways steady-state models cannot predict. (similarity 0.83)
• Five tones replicate narrow-band noise masking while single tones distort it (similarity 0.82)
• Masking reduces to a comparison of excitation-level patterns over frequency and time (similarity 0.82)
• Noise-burst masked thresholds rise more gradually than tone-burst thresholds with shorter duration (similarity 0.82)
• Two equal-level talkers yield a global SNR about 11 dB below each single masker (similarity 0.82)
• Pitch shift magnitude correlates inversely with pitch strength of masked tones (similarity 0.81)
• Noise bandwidth below the critical band does not raise masked threshold. (similarity 0.81)
• Hawkins and Stevens measured broadband-noise masking of pure tones across eight masker levels. (similarity 0.81)