pitch perception :: essays research papers

page References Baharloo, S., Johnston, P. A., Service, S. K., Gitshcier, J., Freimer, N. B. (1998). Absolute pitch: An approach for identification of genetic and nongenetic components. American Journal of Human Genetics, 62, 224-231. Retrieved 11/16/2004. Deutsch, D. (1985). Dichotic listening to melodic patterns and its relationship to hemispheric specialization of function. Music Perception, 3, (2), 127-154. Gregersen, P.K. (1998). Instant recognition: The gentics of pitch perception. American Journal of Human Genetics, 62, 221-223. Retrieved 11/16/2004. Heaton, P., Hermelin, B., Pring, L. (1998). Autism and pitch processing: a precursor for savant musical ability? Music Perception, 15, (3), 291-305. Lenhoff, H., M., Perales, O., Hickok, G. (2001). Absolute pitch in Williams syndrome. Music perception, 18, (4), 491-503. Levitin, D., J., Bellugi, U. (1998). Musical abilities in individuals with Williams Syndrome, Music Perception, 15, (4), 357-389. Pechstedt, P., H., Kershner, J., Kinsbourne, M. (1989). Musical Training improves processing of tonality in the left hemisphere. Music Perception, 6, (3), 275-298. Simpson, J., Huron, D. (1994). Absolute pitch as a learned phenomenon: Evidence consistent with the Hick-Hyman law. Music Perception, 12, (2), 267-270. Sloboda, J. A. (1985). An exceptional music memory. Music Perception, 3, (2), 155- 170. Nature or Nurture: The origins of pitch Perception For most of us, quick and accurate perception of the visual world is essential for getting around in life; we take for granted our instant recognition of color, shape, distance, and the physical relationships between objects. Many aspects of the auditory world are also apprehended in an effortless manner: a nighttime whistle is easily identified as a distant train, without any deliberation. However, identifying the pitch of an isolated whistle is beyond the abilities of most people. This is also the case for most musicians, despite the fact that they spend every day working in the context of a standardized system of pitch relationships. Those rare individuals who can instantly recognize the pitch of a random piano tone or passing car horn, without the use of a reference pitch, possess a cognitive ability that is termed "absolute pitch." The range of useful musical pitches is 20-5,000 Hz, which is, roughly the range of a piano keyboard Pitch is a one-dimensional attribute defined by the number of vibrations, per second, emanating from a sound source, such as a plucked string The peripheral auditory organs are designed specifically for frequency analysis. The cochlear basilar membrane vibrates, at each point along its length, with an optimal resonant frequency. The fact that all humans are quick to appreciate the differences in timbre between instruments illustrates the extreme sensitivity of this organ to complex frequency spectra.