基于声卡的虚拟音频分析处理系统

Virtual Audio Signal Analysis and Processing System based on Sound Card

介绍一种虚拟音频信号分析处理系统,利用话筒采集被测音频信号,通过计算机声卡实现A/D转换和D/A转换,最后由数据分析和处理功能非常强大的工程实用软件LabVIEW作为软件开发平台,完成对音频范围内的信号采集及数据存储,并实现音频信号的时域分析、频域分析、啸叫抑制及录音回放等功能。测试结果表明:该系统性价比高、界面友好、性能稳定可靠、扩展性好、能够满足数据采集和分析处理的功能。

The paper describes a virtual audio signal analysis and processing system. This system, by using microphones, could capture the measured audio signal, and then with computer sound card as A / D converter and D / A converter and the powerful of engineering practical LabVIEW software as the software development platform, complete the signal acquisition in the audio range and the data storage, implement time-domain analysis, frequency-domain analysis, howling suppression and the playback of the audio signal. The test results show that this system being highly cost-effective, user-friendly, stable and reliable, could satisfy the functional requirments of data collection, analysis and processing functions.