AES New York 2007 Sunday, October 7, 4:30 pm — 7:00 pm
T12 - HIGH DEFINITION PERCEPTION—PSYCHOACOUSTICS, PHYSIOLOGY, AND THE NUMBERS RACE
Poppy Crum, Johns Hopkins University School of Medicine
Improvements in digital technology have led to higher fidelity recordings by some definitions, but they have also generated much controversy. Sampling rates and bit depths well beyond the limits of conventionally accepted human perception can be used, but are they necessary? This tutorial addresses psychophysical and physiological research of hearing beyond the known limits of audible frequency and dynamic range. In addition to studies of human perception and physiology, we will look at species such as frogs, bats, and hummingbirds known for their development of unique sensitivity to properties of sounds that are crucial in their navigation and communication. Nonstandard mechanisms of hearing transduction will be reviewed across species as an ecological approach to hearing development is considered in the ongoing high-definition debate.
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