Download Pitch: Neural Coding and Perception (Springer Handbook of by Andrew J. Oxenham (Editor), Richard R. Fay (Editor) PDF
By Andrew J. Oxenham (Editor), Richard R. Fay (Editor) Christopher J. Plack (Editor)
Even though pitch has been thought of a big region of auditory learn because the delivery of recent acoustics within the nineteenth century, the most major advancements in our realizing of this phenomenon have happened relatively lately. In auditory body structure, researchers at the moment are selecting cells within the brainstem and cortex that could be fascinated by the derivation of pitch. In auditory psychophysics, dramatic advancements during the last few years have replaced our figuring out of temporal pitch mechanisms, and of the jobs of resolved and unresolved harmonics. Computational modeling has supplied new insights into the organic algorithms that can underlie pitch notion. sleek mind imaging ideas have instructed attainable cortical destinations for pitch mechanisms. This well timed quantity brings jointly the newer findings, whereas emphasizing their relation to the discoveries of the previous. It brings jointly insights from numerous varied methodological parts: body structure, psychophysics, comparative, imaging, etc., in addressing a unmarried medical challenge. Pitch notion may be considered as one of many major difficulties of listening to, and the multidisciplinary method of the ebook presents a important reference resource for graduate scholars and teachers.
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Extra info for Pitch: Neural Coding and Perception (Springer Handbook of Auditory Research)
Sample text
Second, they showed that listeners could not ignore the F0, even if it was advantageous to do so. The experiment involved two complexes in which only the frequency of the lowest component of each was varied. In one condition, the higher components were the same for the two complexes; in the other the higher components were harmonics from different F0s, with the lowest component being common to both F0s. Performance was much worse in the condition with different F0s. Finally, Moore and Glasberg showed that a comparison of multiple frequencies that were not harmonically related led to worse performance than when the frequencies were harmonically related.
It seems possible that the perception of pitch for unresolved harmonics is dependent on the envelope of the waveform produced on the basilar membrane by the interaction of several harmonics. The repetition rate of the fine structure of the waveform (the individual variations in amplitude that determine spectral frequency) remains equal to F0, regardless of the phase relations between harmonics. The importance of the envelope for complexes with unresolved harmonics has been observed in other studies.
1990; Hartmann and Doty 1996; Lin and Hartmann 1998) investigated the pitches of harmonics that are mistuned from their nominal frequencies. They found an interesting pattern of results, whereby the pitch of the harmonic was shifted more than the frequency of the harmonic. In other words, if the mistuning of a harmonic was negative, the pitch was matched to a frequency lower than that of the mistuned harmonic; if the mistuning was positive, the pitch was matched to a frequency higher than that of the mistuned component.