Paraphrase and improve presenting style - Essay Example

The sources of these sounds are categorized in relation to their engagement of the basis of molecular formation; solids, liquids and gasses. Background: In terms of pitch and frequency discrimination tasks, human performance has been intensively researched with its primary focus upon the duration of repetitive wavecycles. These studies concluded that an individuals’ increasing exposure to wavecycles subsequently increases their performance. This revelation would contribute to the understanding of the evolution of animal’s communicative sounds, particularly from single-pulse resonances which became repetitive expressions of the same stimulus.

A study conducted by Hsieh and Saberi (2007) found that an increase in performance coincided with the lengths of exposure duration, where increasing exposure increased performance. Aim: The primary aim of this study was to explore the effect repetition has upon human performance, particularly how the number of exposure periods to a damped sinusoid and double damped sinusoids increases the individuals’ performances. The experimenter then compared the effect on individuals’ performances, focusing between damped and double damped sinusoids.

Method: Ten participants with average auditory abilities were recruited from a single population; the staff and students of the university. The experimenters exposed the subjects to an increasing number of periods (1, 2, 4, 8 and 16) of a damped and double damped sinusoid. They accomplished this by using “a three alternative forced choice method and a one up three down adaptive procedure stair case” in conjunction with the examination of the Just Noticeable Difference threshold in the subject’s ability to discriminate the exposure to varying frequencies.

The experimenters labeled the samples in this study as “looks”, as their multiple-look models would collectively account for the collected data which came from the temporal