Noise bandwidth below the critical band does not raise masked threshold.
Evidence
Using uniform masking noise, it is possible to produce meaningful data at all frequencies so that the critical bandwidth can be measured as a function of frequency. Further, instead of using a number of tones of equal amplitude, noises can be used in the same way. In this case, uniform masking noise is used as masker and the threshold of an additional noise is measured as a function of the bandwidth of this additional noise. The results show the same effect: the threshold of this noise masked by uniform masking noise is independent of bandwidth for noise narrower than the critical bandwidth but increases ~ just like the data outlined in Fig. 6.2b ~ for bandwidths larger than the critical band. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 889
Categorization
Category: Factual Claims
Related
- Masked threshold rises once noise bandwidth exceeds the critical bandwidth (similarity 0.95)
- Masking pattern shapes differ by center frequency even at equal masker level (similarity 0.89)
- Broadband maskers at low levels mask mid frequencies more than extremes. (similarity 0.88)
- Masking by bandlimited noise depends only on masker energy within the critical band. (similarity 0.88)
- Masked threshold of a tone by white noise is computable from critical-band level (similarity 0.88)
- Uniform masking noise can substitute for threshold-in-quiet across all frequencies. (similarity 0.88)
- Masked-threshold shape is nonlinear and level-dependent, steepening only at low masker levels. (similarity 0.88)
- White noise masking of tones is linear but frequency-dependent above 500 Hz (similarity 0.88)
- Only tones exceeding a level-dependent masked threshold are audible in noise (similarity 0.88)
- There is a critical bandwidth beyond which adding noise power no longer increases masking (similarity 0.88)
- Two simultaneous maskers partition the spectrum where each dominates (similarity 0.87)
- Beyond threshold, masker and signal levels rise one-for-one in decibels (similarity 0.87)
- Uniform masking noise mirrors white-noise masking and gives flat thresholds (similarity 0.87)
- Equal-level narrow-band maskers mask less at higher centre frequencies (similarity 0.87)
- Added masking noise prevents off-frequency cues in hearing experiments (similarity 0.87)