Time-Separation Pitch Associated with Correlated Noise Bursts

McClellan, Max E.; Small, Arnold M.

doi:10.1121/1.1909591

Cited by 14 publications

(6 citation statements)

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“…Such a stimulus has a rippled power spectrum in which power varies sinusoidally with frequency, and the spacing between the ripples is equal to 1/T ( Johnson and Titlebaum, 1976;. McClellan and Small (1965) were the first to demonstrate that correlated noise bursts generated TSP in humans. Since then, rippled-noise stimuli have been used in many TSP experiments with humans (i.e., Ritsma, 1969/1970;Warren et al, 1980).…”

Section: Introductionmentioning

confidence: 99%

Detection of noise with rippled spectra by the Atlantic bottlenose dolphin

Au¹,

Pawloski

1989

The Journal of the Acoustical Society of America

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A dolphin was required to discriminate between tippled and nonrippled noise projected by an underwater transducer. Random noise was summed with its delayed replica to produce noise having tipples separated by 1/T Hz in the frequency domain, where T is the delay time. Three different experiments were conducted in which a dolphin was required to discriminate tippled and nonrippled noise using both cos + and cos -stimuli. In the first experiment, the dolphin detected the cos -tippled stimulus at a correct response level of at least 75 % for delays between 15 and 500 ps, and the cos + tippled stimulus for delays of 13 to 190 ps. In the second experiment, the dolphin's sensitivity to tippled noise was measured by attenuating the delayed replica for different delays. The dolphin was most sensitive for a delay of 100 ps. Its sensitivity at 100 ps was 5 dB better for the cos + than the cos -stimuli. In the third experiment, broadband cos + noise was also filtered in different 1/3 octave bands to determine if the animal's sensitivity to tippled noise was a function of the center frequency of the noise. The dolphin's performance was relatively constant as a function of center frequency. The overall results suggest that dolphins may be able to perceive time-separation pitch (TSP).

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Section: Introductionmentioning

confidence: 99%

Detection of noise with rippled spectra by the Atlantic bottlenose dolphin

Au¹,

Pawloski

1989

The Journal of the Acoustical Society of America

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“…The echo highlights may be heard as different pitches via a phenomenon similar to time-separation pitch (TSP) ) that occurs when humans hear correlated broadband pulses that arrive very closely together in time (McClellan & Small, 1965). When humans are tested for TSP, they match pure tones to the TSP sounds to which they have listened.…”

Section: Echo Highlightsmentioning

confidence: 99%

Echoic Object Recognition by the Bottlenose Dolphin

Harley¹,

DeLong²

2008

CCBR

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Object recognition, essential to many animals, often occurs underwater and in poor visibility conditions for bottlenose dolphins. Bottlenose dolphins can use sound through their ability to echolocate in order to recognize objects. Echoic object recognition is an unusual faculty that offers rich research opportunities and is the focus of this article. This review begins with a brief overview of the dolphin's echolocation system followed by considerations of echoic object discrimination, echoic object constancy, the use of echo trains versus individual echoes for object recognition, and extraction of object feature information from echoes. The authors present new data relating the acoustic analysis of objects with a dolphin's ability to recognize those objects. The results highlight the potential uses for simultaneous analysis of acoustic and behavioral data in order to understand better which features of echoes and echo trains allow the dolphin to recognize objects across vision and echolocation.

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“…Humans when presented with a correlated pair of sound pulses perceive a pitch that is equal to l/T, where T is the separation time between pulses (Small and McClellan, 1963;McClellan and Small, 1965). In Fig.…”

Section: Structure Discriminationmentioning

confidence: 99%