Translation of audio signal processing and coding: Preface

// This book is recommended by a big man in the field of audio and video , Since there seems to be no Chinese version , So try to translate while reading

Audio processing and recording have been used as part of communication and entertainment systems for more than a century , And in this field , The bandwidth problem has been related to audio recording very early 、 transcoding 、 Bound to storage , A series of important technologies have been developed from the early phonograph 、 Tape recorder to later CD Machine and super memory . Next , We will extract some of the most important time and important milestones of audio recording and storage .

        The prototype of the phonograph probably appeared in 1877, The first batch of phonograph based on cylindrical memory was 1889 It was made by Columbia Phonograph Company in .5 After year , Marconi showed the first radio transmission , It marks the beginning of audio broadcasting technology . then ,Victor Talking Machine The company in 19 A patent was obtained in Denmark at the end of the th century , The patent is a magnetic recorder with wires connected （ Early microphone ）, And based on this 1901 A telephone was produced in .

// My lunch break , To be continued