Spectral features related to the auditory perception of twang-like voices.

Background: To the best of our knowledge, studies on the relationship between spectral energy distribution and the degree of perceived voices are still sparse. Through an auditory-perceptual test we aimed to explore the spectral features that may relate with the auditory-perception of voices.

Methods: Ten judges who were blind to the test's tasks and stimuli rated the amount of twang perceived on seventy-six audio samples.