1/10縮尺模型実験用高精度ダミーヘッドの試作

摘要

In an acoustical small-scale experiment of a music hall before completion, a same scale dummy-head microphone is often used to record impluse responses. However, the head shape is normally represented by a rigid sphere without ears. In this report, a tenth-scale dummy-head microphone with high-precision ears is developed by use of stereolithography. Head-Related Transfer Functions (HRTFs) of the developed and conventional dummy-heads were measured and compared. As a result, it was confirmed that main features of the HRTFs of the developed dummy-head were similar those of the original dummy-head.%音楽ホール等の竣工前室内音響模型実験において，聴取者の両耳位置での収音には模型と同縮尺のダミーヘッドが使用されるが，通常頭部は耳介のない剛球である．本稿では，耳介も含めた1/10縮尺模型実験用のダミーヘッドを光造型法で試作した．精密耳介あり，耳介なし剛球頭部，および原寸の頭部伝達関数を測定し比較した結果，試作した耳介あり高精度ダミーヘッドは，原寸のダミーヘッドの特徴を良く表現できていることが確認された．