音響機器のパルス応答と過渡ひずみ

概要

論文の詳細を見る
Several types of non-linear distortions of audio nstruments are discussed sytematically using calculation models. The model of an input pulse shown in Fig. 1 is characterized by an asymmetric wave form with zero DC component. The pulse responses corresponding to non-linearities, viz. , the S-type non-linearity(Fig. 2), clipping(Fig. 4) and cross-over distortion(Fig. 6) of an amplifier, the transient distortion of a level-compressor, and the S-type non-linearity(Fig. 9) of a loud-speaker, are illustrated if Figs. 3, 5, 7, 8, and 10 with their spectra, respectively. Since the growth of the DC component is typical of the non-linearity of an amplifier, which is in constrast with the case of a loud-speaker, it can be said that the non-linearities of an amplifier and a loud-speaker are physically distinguishable. It thus appears that one can judge an amplifier by hearing a musical sound through a loud-speaker.
社団法人日本音響学会の論文
1978-08-01