To remedy the defects of hearing determine methods which over-reliance on the experience of works andcan not accurately judge the bevel gear mesh quality

a design of bevel gear mesh noise measurement and analysis system based on DSP and FPGA is proposed.DSP used as the controlling and data processing core in the system

collecting noise signal

after filtering

analog-digital conversion

spectrum analysis

bevel gear meshquality is comprehensive judged

By field programmable gate array（FPGA） logic control to coordinate DSP

the entire system functions are achieved.Using keyboard and LCD hardware design

humanmachine interface is implemented.In addition

by serial communication

this system can communicate with PC and implement signal data storage.Generally

the system is favorable for its integrated functions

simple structures and provide a powerful measurement and analysis tool for controlling bevel gear mesh quality.