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. 2011 Jan;129(1):326–339. doi: 10.1121/1.3514536

Figure 4.

Figure 4

Source-induced bifurcation. Upward pitch glide for vowel ∕ae∕ using setup 2: (a) normalized microphone signal, (b) microphone spectrogram, (c) normalized accelerometer signal, and (d) accelerometer spectrogram. Upper arrows bound the register transition section to be further analyzed in Fig. 8. Lower arrows bound a region with increased harmonic amplitude prior to the bifurcation point.