Effects of head geometry simplifications on acoustic radiation of vowel sounds based on time-domain finite-element simulations

摘要: One of the key effects to model in voice production is that acoustic radiation sound waves emanating from mouth. The use three-dimensional numerical simulations allows naturally account for it, as well consider all geometrical head details, by extending computational domain out vocal tract. Despite this advantage, many approximations geometry are often performed simplicity and impedance load models still used reduce cost. In work, impact some these simplifications on examined vowel frequency range 0–10 kHz, means comparison with a realistic head. As result, recommendations given their validity depending whether high energy (above 5 kHz) should be taken into or not.