一、磁记录的兴起提起磁记录,人们一般都要追溯到1888年,是一个美国人Oberlin Smith他首先提出了磁录音的设想和理论。但第一个实用的磁记录器的诞生却是1898年的事,是由一个丹麦电话工程师Valdemar Poulsen完成的。至1900年,他的发明在美国、英国、德国等世界各地得到了广泛应用。当然此时的记录线性度和讯噪此都是很差的。1909年Poulsen发 First, the rise of magnetic recording Magnetic recording, people generally have dates back to 1888, is an American Oberlin Smith he first put forward the idea of ​​magnetic recording and theory. But the birth of the first practical magnetic recorder was done in 1898 by Valdemar Poulsen, a Danish telephony engineer. By 1900, his invention was widely used in the United States, Britain, Germany and other parts of the world. Of course, the recording linearity and signal noise are very poor at this time. Poulsen made in 1909