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最早的录音机早在1831年英国科学家法拉第和亨利就揭示了电和磁的奥秘,继而诞生了电话机和留声机。后来,美国科学家奥伯林·史密斯根据电磁感应原理提出了利用磁性媒质进行录放音的设想。1888年他在美国《电子世界》杂志上发表文章指出:“根据电磁感应理论,可以在磁性体上记录声音信号,也可以从磁性体中将所记录的信号取出还原。”十年后的1898年,在这个设想的启示下,丹麦工程师瓦尔德马·波尔森成功地进行了录放音的试验,世界上最早的磁性录音机诞生了。由于当时还没有电子管和放大器,只能直接利用感应电
Earliest tape recorders As early as 1831 British scientists Faraday and Henry revealed the mysteries of electricity and magnetism, followed by the birth of the telephone and gramophone. Later, the American scientist Oberin Smith put forward the idea of using magnetic media for recording and playback based on the principle of electromagnetic induction. In 1888, he published an article in the “Electronic World” magazine in the United States stating: “According to the theory of electromagnetic induction, the sound signal can be recorded on a magnetic body and the recorded signal can be taken out and restored from a magnetic body.” "Ten years later In 1898, inspired by this idea, Waldama Polson, a Danish engineer, succeeded in recording and reproducing the world’s first magnetic tape recorder. Because at that time there was no tube and amplifier, only direct use of induction