Impulse Response Measurements Using Gold Sequences

Maximum length sequences have been studied extensively and have been found applications in home acoustic measurement. Once the number of sources is higher than two, straightforward use of reciprocal m sequence pairs cannot meet the need of simultaneous impulse response measurement. A binary gold sequence can be generated by the addition module two of a preferred, or a reciprocal characteristic binary m sequence pair. In stepping tau point-by-point, 2ⁿ+1 gold sequences result to a finite set. The features of favorable correlation functions and of sufficient number in a set best qualify gold sequences for correlation impulse technique. Computer simulation results demonstrate the validity and the feasibility of the proposed method