Loudness perception of signals of monotonically changing sound pressure
| Autor: | Arnold M. Small |
|---|---|
| Rok vydání: | 1977 |
| Předmět: |
medicine.medical_specialty
Loudness Perception Acoustics and Ultrasonics Acoustics Monotonic function Audiology Stimulus (physiology) Loudness Sound Arts and Humanities (miscellaneous) Differential threshold Auditory Perception Pressure otorhinolaryngologic diseases medicine Humans sense organs skin and connective tissue diseases Sound pressure psychological phenomena and processes Mathematics |
| Zdroj: | The Journal of the Acoustical Society of America. 61:1293-1297 |
| ISSN: | 0001-4966 |
| DOI: | 10.1121/1.381431 |
| Popis: | Listeners were required to judge whether a 500‐Hz stimulus, whose SPL was monotonically changing, was increasing or decreasing in loudness over its 2‐sec duration. Performance was best when single stimuli were presented in isolation. Providing a second, fixed SPL stimulus for use as a reference generally resulted in poorer performance especially as the initial SPL of the changing stimulus departed from that of the reference. It made little difference whether the variable was presented before or after the reference stimulus. Under optimal conditions listeners could discern changes as small as 0.25 dB/sec 75% of the time. The traditional differential threshold for stimuli whose SPL was not changing was 0.37 dB, a value similar to that reported by other investigators. The question as to whether judgments were being made on the basis of the rate of change of sound pressure per se, or the range over which SPL changed was not directly addressed by this experiment and was therefore not resolved. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|