The simulation of bat and dolphin signals and the estimate of their vocal tract shapes
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概要
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The signal maximizing the wide-band ambiguity function, in which the effects of both phase-fluctuation and Doppler shift are taken into account, are derived by using techniques of variational calculus. These signals are found to be very similar to some of the waveforms used by dollphins and bats for echolocation. It is indicated that these signals can be also produced by changing only the coefficients of the derived differential equation. Their vocal tract shape are estimated from these theoretical signals by applying linear prediction techniques and found to resemble the configuration of human whistling
- 社団法人日本音響学会の論文
著者
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Okamoto Yoichi
Department Of Applied Physics National Defense Academy
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Kashiwagi Eiichi
Department Of Applied Physics National Defense Academy
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