多通道音频数采设备的频响测试系统

An Automatic Frequency Response Measurement System Applied in Multi-Channel Audio Data Acquisition Equipment

介绍了一种应用于多通道音频数采设备的频响自动测试系统。硬件上设计了基于DDS的内部信号激励源以及通道开关控制阵列,软件上开发了能获取数采设备数据、控制外接信号源以及进行自动测试并保存输出结果的应用程序。该系统稳定可靠,具有一定的扩展性和通用性,能很好完成相应类型数采设备的频响自动测试任务。

An automatic frequency response measurement system is designed, which is applied in the multi -channel au- dio data acquisition equipments. The hardware consists of an internal signal source, which is based on the DDS technologies, and a channel switching circuit. The software can get data from the data acquisition equipment, control the extern signal gen- erator and save the test resuh automatically. The system is stable and reliable and has good expansibility and versatility to meet the automatic measurement task for audio data acquisition equipments.