抄録
In the evaluation of sound environment around a main line, it is necessary to estimate the sound levels at evaluation points based on the observations at a reference point. In this study, a method to estimate system parameters reflecting several correlation information between both evaluation and reference points based on the observations contaminated by a background noise is first derived. Next, a method for estimating precisely the specific signal for the sound environment with unknown structure and an observation noise of unknown statistical properties is theoretically proposed. The effectiveness of the proposed theory is confirmed experimentally by applying it to actual traffic noise data at main line.
