ASA 23 - Virtual Pitch With Random Harmonics

Description

This demonstration compares the virtual pitch and the timbre of complex tones with low and high harmonics of a missing fundamental. Within three groups (low, medium, high harmonics) the harmonic numbers are randomly chosen. The Westminster chime melody is clearly recognizable in all three cases. This shows that the recognition of a virtual-pitch melody is not based on aural tracking of a particular harmonic in the successive complex-tone stimuli.

References

A.J.M.Houtsma (1984), "Pitch salience of various complex sounds," Music Perc. 1, 296-307.



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The tune of the Westminster chime is played with tone complexes of three random successive harmonics. In the first presentation harmonic numbers are limited between 2 and 6.

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Now harmonic numbers are between 5 and 9.

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Finally harmonic numbers are between 8 and 12.