Abstract: A wide variety of acoustic systems have multiple sources and receivers.Impulse respo-nses between two separate sources and one or several receivers of acoustic systems need to be measured simultaneously.With its favorable correlation properties,a pseudorandom sequence is exploited in impulse response measurement simultaneously for multiple sources.The simultaneous dual-source measurements exploit excellent cross-correlation properties of reciprocal pairs of msequences.In the measurement of a dual source system,each of the reciprocal msequence pairs simultaneously excite one of two separate sources,two receiver signals cross-correlate in turn with each of the m-sequence pairs,resulting in impulse responses associated with two separate sources.Once the number of simultaneous sources is higher than 2,straightforward use of recipr-ocal msequence pairs cannot meet the need.A binary gold sequence can be generated by modulo-2 addition between a reciprocal binary m-sequence pair.In stepping t point-by-point,a large number of gold sequences result in a finite set.These gold sequences in the collection have pulse-like autocorrelation functions,and the cross-correlation functions between any pairs of signal drawn from the set have peak values that are significantly lower than the peak magnitude of autocorrelation function.This unique property,along with a sufficient number of single gold sequ-ences in a collection satisfies the need of excitation signal for simultaneous acoustic multiple channel measurement.Computer simulation results demonstrate validity and feasibility of the proposed method.