Duplex perception: Confirmation of fusion

Repp, Bruno H.; Milburn, Christina; Ashkenas, John

doi:10.3758/bf03205880

Cited by 59 publications

(42 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The other, closely related characteristic of duplex perception is that it is precisely duplex, not triplex. That is, listeners perceive the nonspeech chirp and the fused syllable, but they do not also perceive the base-that is, the syllable, minus one of the formant transitions-that was presented to one ear (Repp, Milburn, & Ashkenas, 1983). (In the experiment with musical chords by Pastore et al, 1983, referred to just above, there was no test for duplex, as distinguished from triplex, perception.…”

Section: An Acoustic Signal Diverges To Phonetic and Auditory Modesmentioning

confidence: 99%

The motor theory of speech perception revised

1985

View full text Add to dashboard Cite

A motor theory of speech perception, initially proposed to account for results of early experiments with synthetic speech, is now extensively revised to accommodate recent findings, and to relate the assumptions of the theory to those that might be made about other perceptual modes. According to the revised theory, phonetic information is perceived in a biologically distinct system, a 'module' specialized to detect the intended gestures of the speaker that are the basis for phonetic categories. Built into the structure of this module is the unique but lawful relationship between the gestures and the acoustic patterns in which they are variously overlapped. In consequence, the module causes perception of phonetic structure without translation from preliminary auditory impressions. Thus, it is comparable to such other modules as the one that enables an animal to localize sound. Peculiar to the phonetic module are the relation between perception and production it incorporates and the fact that it must compete with other modules for the same stimulus variations.

show abstract

Section: An Acoustic Signal Diverges To Phonetic and Auditory Modesmentioning

confidence: 99%

The motor theory of speech perception revised

1985

View full text Add to dashboard Cite

show abstract

“…All of these studies focused on duplex perception in the context of investigating certain properties of human speech perception. Few researchers have attempted any thorough explanation of the phenomenon (however, see Nusbaum, 1984;Nusbaum et al, 1983;Repp, 1984;Repp et al, 1983), and until very recently no one has attempted to apply the paradigm to another area of auditory perception. If the phenomenon were observed in other areas of auditory perception, this would imply that duplex perception is part of a generalized auditory process rather than being special to speech.…”

mentioning

confidence: 99%

“…Isenberg, & Rakerd, 1981;Mann, 1980;Mann et al, 1981;Nusbaum, Schwab, & Sawusch, 1983;Repp, Milburn, & Ashkenas, 1983). All of these studies focused on duplex perception in the context of investigating certain properties of human speech perception.…”

mentioning

confidence: 99%

Duplex perception with musical stimuli: A further investigation

Collins

1985

Perception & Psychophysics

View full text Add to dashboard Cite

Duplex perception, the simultaneous perception of a single stimulus in two phenomenologically distinct modes, was first observed, using musical stimuli, by Pastore et al. (1983). The present paper reports a two-part experiment designed to replicate and extend Pastore et al.'s study. Twenty subjects participated in both parts, the first of which was a modified replication of Pastore et al.'s Experiment 1, and the second of which was an extended replication in which the onset time of target notes was manipulated. As expected, in both parts of the study duplex perception was observed only when subjects were making musical judgments of dichotic stimuli; however, in the second part of the study, the prediction that duplex perception would be more likely to occur when target notes were on time as opposed to early or late was not supported. The overall incidence of duplex perception was lower than that reported by Pastore et al. Possible reasons for this discrepancy in findings are discussed.Duplex perception, the simultaneous perception of a single stimulus in two phenomenologically distinct modes, was first observed by Rand (1974), using synthetic speech stimuli. The phenomenon occurs when a single formant transition, or a pair of transitions, is isolated and presented to one ear, while the remainder of the syllable is presented to the other ear. Listeners report hearing a nonspeech "chirp" in the ear to which the isolated transition(s) was (were) presented and, simultaneously, the reconstituted syllable in the other ear. The perceived identity of the syllable-consonant depends on the contralateral formant transition.Mann, Madden, Russell, and Liberman (1981) applied this method to determine how a time-varying formant transition was integrated into the perception of a stop consonant. They observed that the reconstituted speech percept observed by their subjects seemed no different from the one that would have been produced had the base and isolated transitions been electronically mixed and presented in the normal manner. At the same time, their subjects perceived a nonspeech "chirp" not perceptibly different from what they would have perceived had the transition been presented in isolation. Isenberg and Liberman (1978) used only the F3 transition as the isolated cue, so that the remainder, all of the first and second formants, would be full and speech-like. The results indicated that this arrangement did make it relatively easy to obtain the duplex percept.There has since been much research using the duplex paradigm (e.g., Isenberg & Liberman, 1978; The author is grateful to Ian Christensen, Andrew Gregory, Tony Manstead, and two anonymous reviewers for their helpful comments on an earlier version of this paper.The author's mailing address is: Department of Psychology, University of Manchester, Manchester M13 9PL, England.

show abstract

“…The stimuli were the synthetic two-formant syllables [ba] and [gal, which are distinguished by a rising versus falling F2 transition. Repp et al (1983) Even though the isolated chirps could be associated with phonetic labels, it by no means follows that the subjects of NSS also relied on chirp identification in the duplex condition of Experiment 1. The relative similarity of the overall response proportions for isolated chirps and duplex stimuli (shown in Figure 3 of,NSS) is very weak evidence indeed; it not only amounts to accepting the null hypothesis but also merely reflects similar response consistency-not necessarily similar response strategies-in the two experimental conditions.…”

mentioning

confidence: 99%