Relative contributions of specific frequency bands to the loudness of broadband soundsa)
| Autor: | Sara M. Walker, Marcin Wróblewski, Kendra K. Schmid, Brenda Ohlrich, Walt Jesteadt, Katyarina E. Brunette, Oluwaseye Ayoola Ogun |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Adult
Male Range (music) Sound Spectrography Acoustics and Ultrasonics Hearing loss Acoustics Hearing Loss Sensorineural Loudness Perception 01 natural sciences Radio spectrum Speech Acoustics Loudness 03 medical and health sciences Young Adult 0302 clinical medicine Arts and Humanities (miscellaneous) Hearing Reference Values 0103 physical sciences medicine Humans 030223 otorhinolaryngology Sound pressure 010301 acoustics Mathematics Analysis of Variance Equivalent rectangular bandwidth Middle Aged medicine.disease Psychological and Physiological Acoustics Noise Case-Control Studies Sensorineural hearing loss Female medicine.symptom Perceptual Masking |
| Popis: | Listeners with normal hearing (NH) and sensorineural hearing loss (SNHL) were asked to compare pairs of noise stimuli and choose the louder noise in each pair. Each noise was made up of 15, two-ERBN (equivalent rectangular bandwidth) wide frequency bands that varied independently over a 12-dB range from one presentation to the next. Mean levels of the bands followed the long-term average speech spectrum (LTASS) or were set to 43, 51, or 59 dB sound pressure level (SPL). The relative contribution of each band to the total loudness of the noise was determined by computing the correlation between the difference in levels for a given band on every trial and the listener's decision on that trial. Weights for SNHL listeners were governed by audibility and the spectrum of the noise stimuli, with bands near the spectral peak of the LTASS noise receiving greatest weight. NH listeners assigned greater weight to the lowest and highest bands, an effect that increased with overall level, but did not assign greater weight to bands near the LTASS peak. Additional loudness-matching and paired-comparison studies using stimuli missing one of the 15 bands showed a significant contribution by the highest band, but properties other than loudness may have contributed to the decisions. |
| Databáze: | OpenAIRE |
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