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经过几年的工作,我院磁带测量实验室在音频磁记录领域的几个研究课题已陆续告一段落。目前已可用较高的准确度对校准带(一般称测试带)、基准带以及磁带(磁粉)的静磁参数等方面进行定值和测试。其中基准磁平的定值准确度可小于±5％,方位角可控制在±2′以内,频响可控制在0.5～1dB,抖晃在0.02～0.03％;并可按照国家标准和 IEC 标准的规定进行有关电声参数(如最佳偏磁、
After several years of work, several research topics in the field of magnetic tape recording laboratory in our institute have come to an end. It has now been possible to calibrate and test the calibration tape (commonly referred to as the test tape), the reference tape, and the magnetostatic parameters of the tape (magnetic powder) with higher accuracy. The standard magnetic flatness setting accuracy of less than ± 5%, the azimuth can be controlled within ± 2 ’, the frequency response can be controlled at 0.5 ~ 1dB, jitter 0.02 ~ 0.03%; and in accordance with national standards and IEC standards The provisions of the electro-acoustic parameters (such as the best bias,