基于 LabVIEW 的乐器数字调音系统

摘要

By the idea of virtual instrument,a musical instrument digital tuning system is developed based on the graphical programming software LabVIEW. The main contents of the system include simulation piano,pitch detection of piano and guitar audio frequency,audio collection and storage,audio parameter measurement,audio spectrum analysis and graphical display. By NI module in LabVIEW,the intonation tuning of piano and guitar is realized with cordwood programming method. The piano simulation tuning process was achieved. The system meets the actual needs of guitar tuning.%　　该系统采用虚拟仪器思想，利用基于图形化的编程软件 LabVIEW 开发了乐器数字调音系统。主要内容包括模拟钢琴，钢琴及吉它音频的基频检测，音频的采集和存储、音频的参数测量、音频的谱分析及图形化显示等内容。该系统利用 LabVIEW 中 NI 模块通过搭积木式编程方法实现了对钢琴和吉它2种乐器的音准调音。实现钢琴模拟调律过程，满足实际吉它调音的需要。