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 supposing pitch has been thought of an enormous quarter of auditory learn because the start of contemporary acoustics within the nineteenth century, one of the most major advancements in our figuring out of this phenomenon have happened relatively lately. In auditory body structure, researchers at the moment are deciding on cells within the brainstem and cortex that could be fascinated about 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 conception. smooth mind imaging thoughts have instructed attainable cortical destinations for pitch mechanisms. This well timed quantity brings jointly the more moderen findings, whereas emphasizing their relation to the discoveries of the previous. It brings jointly insights from a number of various methodological parts: body structure, psychophysics, comparative, imaging, etc., in addressing a unmarried clinical challenge. Pitch notion should be considered as one of many major difficulties of listening to, and the multidisciplinary strategy of the publication presents a useful reference resource for graduate scholars and lecturers.

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Additional info for Pitch: Neural Coding and Perception (Springer Handbook of Auditory Research)

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2 Is F0 Discrimination Dependent on Resolvability or Harmonic Number? The previous section outlined a number of different measures that seem to converge on the idea that the first 5 to 10 harmonics may be peripherally resolved. The fact that this limit coincides well with a transition between good and poor F0 discrimination suggests that good F0 discrimination requires the presence of some resolved harmonics. Though they may be necessary, the question remains whether resolved harmonics are sufficient to produce good F0 discrimination.

Even so, three components do not represent the limit for the perception of periodicity pitch. Smoorenburg (1970) showed that when two pairs of tones (1800 and 2000 Hz and 1750 and 2000 Hz) were presented sequentially, about half the 42 listeners heard the pitch go down (presumably following the spectral pitch of the lower component) while the other half of the listeners heard an upwards pitch movement, in line with the fundamental frequencies of 200 and 250 Hz, respectively. Houtsma and Goldstein (1972) also studied the pitch produced by twocomponent complexes.

In other words, the sensation produced by SAM noise seems to satisfy a fairly conservative definition of pitch. Based on musical interval recognition, Burns and Viemeister estimated that the existence region for the pitch of SAM noise extends up to around 850 to 1000 Hz. The results show that pitch can be extracted from the temporal envelope of stimuli in the absence of fine structure regularity: the fine structure of modulated white noise is random, and the long-term spectrum is flat. On the other hand, the pitch of modulated noise is not as strong as that of a harmonic complex tone, and this could be interpreted as evidence that fine structure regularity is used by the auditory system under normal circumstances.

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