一、早期的录音与重放装置早在爱迪生(T.A.Edison)发明留声机之前,法国人斯科特(L.Scott)在1857年就提出了将声波振动变换成机械振动的理论。二十年后,另一位法国人克罗斯(M.C.Cros)在1877年4月又提出了用机械振动方式记录声音并把它重放出来的具体方案,可惜他并没有把这种设想付诸实现。同年7月,美国大发明家爱迪生试制成功叫做留声机的录音——重放装置, 1. Early Recording and Reproduction Devices French scientist L. Scott put forward the theory of converting acoustic vibration into mechanical vibration long before T.A. Edison invented the phonograph. Twenty years later, another Frenchman, MCCros, again proposed in April 1877 a scheme of mechanically vibrating the sound and reproducing it. Unfortunately, he did not put this idea into effect achieve. In July of the same year, Edison, the great American inventor, successfully made a recording called a gramophone - a playback device.