机构地区: 电子科技大学
出 处: 《声学技术》 2011年第5期438-442,共5页
摘 要: 针对参量扬声器的算法快速验证与开发问题,采用PCI-1712高速数据采集卡作为信号输入/输出设备,以Labview作为算法快速建模与仿真工具,在PC机上设计并实现了参量扬声器的算法快速验证平台。利用该平台,对SSB算法及DSB算法进行了快速验证与开发,发现:在1.5kHz以上频段,SSB算法输出声波的声压级明显大于DSB算法;在2.5kHz以下频段,两者的谐波失真差异较大,而在2.5kHz以上频段,两者的谐波失真较为接近。 In this paper,a PC-based quick algorithm verification platform for parametric loudspeaker is designed and implemented to solve the problem of quick-verifying and developing the algorithms for parametric loudspeaker,in which the PCI-1712 high-speed data acquisition board is employed as the signal input/output device and the Labview software is used to realize the quick-modeling and simulation of the algorithms.Moreover,the SSB and DSB algorithms' quick-verification and development is implemented of the platform,and the results show: the sound pressure level of SSB algorithm is higher than that of DSB algorithm obviously for the signal frequency above 1.5 kHz;the difference of their harmonic distortion is big for the signal frequency blow 2.5 kHz.but very small above 2.5 kHz.
关 键 词: 参数扬声器 算法快速验证平台 高速数据采集卡 算法 算法
领 域: [一般工业技术]