Abstract: The filters of virtual reproduction for 5.1 ch surround sound are simplified, and the method of reducing the impulse response of filters by poles and zeros cancellation is proposed. The results of subjective evaluation experiment show that, at the sampling frequency of 48 kHz, filters with 128 points (2.7 ms) impulse response produce satisfying performances. Filters with 64 points (1.3 ms) impulse response produce a little degraded performance, but in practical they are still usable. Therefore the impulse response of proposed filters are shorter than that of traditional design (5-10 ms), and the resulted filters can be implemented directly by FIR structure in time domain.