由北方交大通控系副教授陈常嘉等研制的60路:ADPCM 编码转换设备——生产性能样机于8月3日通过校级鉴定.会议听取了研制报告和测试报告,观看了整机运行情况,并做了通话实验.与会专家们认为:该项成果关键部件采用了超大规模集成芯片,集成度高,体积小,整 No. 60, developed by Chen Changjia, an associate professor in the Department of Communication and Control at North Jiaotong University, passed the school-level appraisal on the ADPCM transcoding equipment - performance prototype on August 3. The meeting listened to the research reports and test reports, watched the operation of the whole machine and Made a call experiment.The participating experts believe that: the key components of the results of the use of large-scale integrated chip, high integration, small size, the whole