Pitch Discrimination in Background Noises up to 95 dB SPL

A pool of eight experienced subjects was used in studies of pitch discrimination at 1 kHz in quite loud background noises (up to 95 dB per octave) . Differential thresholds (DF) were collected for both the pitch-memory and pitch-modulation auditory tasks, which differed significantly in absolute DF...

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Bibliographic Details
Main Authors: Morse, Virginia A, Libby, Mary A, Harris, J D
Format: Report
Language:English
Subjects:
ATTRITION
AUDITORY ACUITY
BACKGROUND
BACKGROUND NOISE
INTENSITY
MEMORY(PSYCHOLOGY)
PERFORMANCE(HUMAN)
PITCH DISCRIMINATION
Psychology
SIGNAL TO NOISE RATIO
THRESHOLDS(PHYSIOLOGY)
TIME
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Summary:A pool of eight experienced subjects was used in studies of pitch discrimination at 1 kHz in quite loud background noises (up to 95 dB per octave) . Differential thresholds (DF) were collected for both the pitch-memory and pitch-modulation auditory tasks, which differed significantly in absolute DF and in the effects of overall loudness and in signal/noise ratio (S/N). Control experiments showed that neither the S/N at 50% detection, nor the DF, deteriorated over at least a 20-min listening period, and probably indefinitely, and that the development of a subjectively 'noisy' quality to a continuous pure tone does not necessarily render impossible quite good DF.