In order to meet the demand of high-speed train interior noise comfort tests

a DSP-based portable noise comfort measurement device is designed.The device consists of control part and computation part.High-performance

low power consumption of EP1C6Q240C8 is used as core of control part

A/D acquisition module

SD memory module are extended;low-power DSP chips TMS320VC5509A as the core of computing part

which is responsible for the noise data real-time processing

and results is submitted to the FPGA and sent to SD card;FPGA and DSP are connected by dual-port RAM

making difference between the two core’s frequency can be resolved and high-speed transmission can be realized.It’s verified that the scheme is a pratical design and it provides a new solution for noise comfort measurement of high-speed train.