1. Audio Signal Processing Based on FPGA
- Author
-
Xiao Feng Wang, Jing Bo Zhang, and Shu-fang Zhang
- Subjects
Digital signal processor ,Computer science ,Speech coding ,Fast Fourier transform ,Latency (audio) ,Anti-aliasing ,computer.software_genre ,Audio codec ,Delay ,Electronic engineering ,Audio signal processing ,Digital signal processing ,Digital audio ,Audio signal ,Audio electronics ,Sample rate conversion ,business.industry ,General Engineering ,Audio signal flow ,Audio bit depth ,Matrix mixer ,Frequency spectrum ,Audio filter ,Audio analyzer ,business ,computer ,Computer hardware - Abstract
This paper presents a system of audio signal processing based on FPGA,the system uses audio codec chip LM4550 to A/D transform and D/A transform the input analog audio signal and output digital audio signal.Using FPGA as the high speed signal processor to realize volume adjustment and audio effect control,so it can output different style music.Meantime, the system designs a FFT computing module and control system of VGA display interface,to compute the digital audio signal which is A/D transformed,and real-time display the frequency spectrum of audio signal on VGA.
- Published
- 2014