【摘要】 本文设计了一套基于TMS320C6416芯片的3D虚拟声合成系统。利用头相关传输函数HRTF产生适用于耳机回放的3D虚拟声,使用DSP的库函数实现合成操作,通过设置中断服务程序使DSP以双缓冲机制输出音频,编写芯片的二次加载程序(bootloader)实现整个系统的脱机运行。最后通过TLC16C550芯片实现DSP与PC通信,完成测听实验。结果显示,本系统的测听方位感正确率能达到95%,且执行效率较PC上有显著提高。更多还原

【Abstract】 We design a 3D virtual sound synthesis system based on the TMS320C6416 chips.It produces the 3D virtual sound for headphone playback by HRTF(Headrelated Transfer Function),achieves synthesis operations using the DSP library functions,outputs audio through a double-buffering mechanism by setting the interrupt service,uses the second bootloader to implement its offline operation,and finally completes the audiometric test through the communication between the TLC16C550 chips and PCs.Experimental results show that the correction rate of subjective evaluation achieves 95%.Compared with the efficiency from PCs,the execution efficiency of the system has also improved significantly.更多还原