@article{oai:setsunan.repo.nii.ac.jp:00000995,
 author = {鹿間, 信介 and MIZUNO, Hiroaki and SHIKAMA, Shinsuke and MIZUNO, Hiroaki},
 issue = {1},
 journal = {摂南大学 融合科学研究所論文集, Bulletin of the Transdisciplinary Science Research Institute, Setsunan University},
 month = {Oct},
 note = {We have studied on a non-contact reproduction method of sound signal from phonograph records based on digital image processing. First, we examined whether a groove geometry of stereo-record could be digitized based on a resolution of a flatbed scanner which was commercially available. Next, we investigated three filtering methods to extract the groove edges. As a result, we found that Laplacian of Gaussian (LoG) and Difference of Gaussians (DoG) filter showed relatively superior edge extraction characteristics. From the filtered image, we digitized sound signal. The reproduced sound contained strong high-frequency noise superimposed on the original sinusoidal wave. Among the three filters, the DoG filter showed most preferable time waveform and the LoG filter showed minimum harmonics distortion components. From these results, we have concluded that the extraction accuracy of the groove edges should be improved further in order to reduce the disturbance of the filtered waveform.},
 pages = {75--91},
 title = {Reproduction of Analog Record Sound Using Digital Image Captured by a Flatbed Scanner  - Comparison of Sound Groove Edge-Extraction Filter for Stereo Records -},
 volume = {2},
 year = {2016}
}