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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

The perceptual decomposition of complex sounds composed of simultaneous frequency glides /

Steiger, Howard. January 1980 (has links)
No description available.
2

Effects of sequential context on the perception of brief tones

Weaver, Lisa L. January 1998 (has links)
No description available.
3

Perceptual decomposition of complex tones

Gabel, Janet A. January 1980 (has links)
No description available.
4

Perceived continuity of steady-state and glided tones through a louder noise : evidence concerning a trajectory effect

Ciocca, Valter. January 1985 (has links)
No description available.
5

Effects of sequential context on the perception of brief tones

Weaver, Lisa L. January 1998 (has links)
Eight experiments were performed to investigate factors affecting the discrimination of two characteristics of very brief tones. The subjects (adults with normal hearing) were asked to rate targets that differed either by amplitude envelope or by a change in frequency. For the majority of the trials, a target was followed (after a brief silent interval) by a pure tone referred to as a "mask". Two factors affecting discrimination within this simple paradigm were examined in detail; the frequency separation and the duration of the silent interval between the target and the mask. For most of the other conditions, a target and mask were embedded in a series of sounds that were presented with an isochronous rhythm. Several features of these "background" sounds were varied across the experiments, including their timbre, presentation rate and frequency relationships with the target and mask. / Superior discrimination was obtained when targets were able to perceptually "emerge" from a background of tones or noises. Specifically, performance was strongest when a target was easily segregated from the other sounds in the series by timing factors or through having a unique frequency. Discrimination was also enhanced when the interfering effects of the mask were removed through association with other tones in the sequence. The data suggest that a simple "interruption" model of processing, in which the presence of a mask disrupts subjects' ability to process individual characteristics of a target, does not adequately explain the differences in discrimination observed across the conditions. A more comprehensive explanation could consider attentional factors that may influence subjects' ability to accurately identify which tone in a sequence is to be rated. However, a perspective based on auditory segregation seems to most consistently explain the data; individual characteristics of a target were most easily discriminated when the target was perceived as belonging outside of an auditory group formed by the background sounds. This was especially true when the mask was likely to have been perceived as belonging within the group due to frequency proximity and/or rhythmic regularity.
6

Influences of sequential organization processes on the use of binaural cues

Steiger, Howard. January 1983 (has links)
Eight experiments examined the effects of placing a sequential organization cue (the frequency proximity between successive tones) into competition with various binaural cues. The sequential organization of an alternating pair of monaural pure tones (A and B) was found to oppose the effect of a contralateral noise burst (synchronous with B) to delateralize B's perceived position and to distort its perceived purity. Similarly, the sequential organization of a monaural tone with the same-ear component of a dichotic tone was found to often oppose the perceptual integration of the components of the dichotic tone. These findings were interpreted as suggesting that sequential cues compete with certain binaural cues during lateralization and dichotic integration decisions. However, sequential cues were found not to influence the fusion of identical sinusoids presented at opposite ears. Thus, binaural fusion appeared to occur independently of sequential organization processes. These findings were discussed in terms of levels and mechanisms of processing, and of ecological demands.
7

Perceived auditory continuity with gliding frequency changes

Dannenbring, Gary Lee January 1974 (has links)
No description available.
8

Contralateral advantage in auditory perception

Mononen, Larry J. January 1976 (has links)
No description available.
9

The perceptual decomposition of complex sounds composed of simultaneous frequency glides /

Steiger, Howard. January 1980 (has links)
No description available.
10

The diagnosis and protection of the auditory peripheral system /

Duan, Mao Li, January 1900 (has links)
Diss. (sammanfattning) Stockholm : Karol. inst. / Härtill 6 uppsatser.

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